Variables

The quantities that describe products and working points. Products and series carry them by key in variables; filters in the API use the same keys (v.phase=3, min.efficiencyStatic=60).

Product variables are stored data of a product — rated power, phase, outlet area. Operation variables (group operation) describe a working point and are computed by Select fans. The same list comes as JSON from GET /v1/variables.

240 variables

key	name	symbol	unit	group	step	values
`airDensity`	Medium density	ρ_air	kg/m³	operation	0.001	0 – 3
Medium Density refers to the mass of air or another gas per unit volume, measured in kilograms per cubic meter (kg/m³). It is a key parameter affecting the performance and efficiency of a fan, as changes in density influence airflow and generated pressure. Typically, air density is defined at a temperature of 20°C (68°F), atmospheric pressure of 1013.25 hPa (standard atmospheric pressure at sea level), and a relative humidity of 50%. Under these conditions, air density is approximately 1.2 kg/m³. Medium density can change depending on temperature, atmospheric pressure, and humidity. For example, higher temperatures decrease air density, while higher atmospheric pressure increases density. Humidity also affects air density - increasing humidity decreases density because water vapor is lighter than dry air.
`annualEnergyCost`	Annual energy costs	C_yr		operation	0.1	0 – 100 000 000
The total cost of electricity consumed by the fan over the year. It considers annual energy consumption and the price per 1 kWh.
`compressibilityFactor`	Compressibility factor	Z		operation	0.0001	0 – 2
The Compressibility Factor (Z) is a dimensionless parameter used in thermodynamics and engineering calculations to determine the degree to which a real gas d… viates from ideal gas behavior.Definition: Z is the ratio of the molar volume (or pressure) of a real gas to the molar volume that the gas would occupy under ideal gas conditions, Z = (pV_real) / (RT).HVAC Significance: Under standard conditions (low pressures, moderate temperatures), Z is close to 1 (Z ≈ 1), which simplifies calculations (the medium is treated as an ideal gas). In high-pressure systems (e.g., compressors, refrigeration cycles, industrial gases), using Z is essential for accurate sizing and thermodynamic calculations.Value: For an ideal gas, Z=1. Values Z > 1 indicate the dominance of repulsive forces (the gas is less compressible than ideal), and Z < 1 indicates the dominance of attractive forces (the gas is more compressible than ideal).
`controlSignalVoltageEC`	Control signal 0−10V	U_{EC, control}	V	operation	0.01	0 – 10
The 0−10V control signal is an analog voltage that smoothly regulates the performance of an EC fan, where 0V means off and 10V means full power. This allows precise adjustment of speed to the current needs of the ventilation system.
`current`	Current consumption	I	A	operation	0.01	0 – 1 000
Current consumption refers to the instantaneous amount of electrical current drawn by the fan motor, measured in amperes (A). It is a key operating parameter that depends on the fan load, rotational speed, and motor efficiency. Monitoring instantaneous current consumption is essential for assessing system performance, preventing overloads, and minimizing energy consumption. It also enables early detection of issues such as excessive component wear or improper operating conditions, which is crucial for maintaining optimal performance and longevity of the ventilation system.
`dailyEnergyCost`	Daily energy costs	C_d		operation	0.001	0 – 100 000
The cost of electricity consumed by the fan in one day. Calculated based on daily energy consumption and unit cost.
`dailyHours`	Daily operating hours	hr_d	hr/day	operation	0.1	0 – 24
Average daily operating hours of the fan. Consider the system schedule and the ventilation requirements of the facility.
`efficiencyImpeller`	Rotor efficiency	η_imp	%	operation	0.01	0 – 100
Impeller Efficiency refers to the efficiency of the fan's impeller itself in converting mechanical energy into airflow and pressure. It is an indicator of how effectively the impeller generates airflow and pressure from the available mechanical power. High impeller efficiency indicates an efficient design and minimal energy losses.
`efficiencyInverter`	Inverter efficiency	η_vfd	%	operation	0.01	0 – 100
Inverter Efficiency refers to the efficiency of a device in regulating the fan's rotational speed by changing the supply frequency. High inverter efficiency means lower energy losses during this regulation, leading to more effective fan speed control and an overall improvement in the ventilation system's efficiency.
`efficiencyMotor`	Motor efficiency	η_motor	%	operation	0.01	0 – 100
Motor Efficiency refers to the efficiency of an electric motor in converting electrical energy into mechanical energy. It is the ratio of the mechanical power at the motor shaft to the electrical power consumed by the motor. High motor efficiency means lower energy losses and more efficient operation.
`efficiencyStatic`	Static efficiency	η_static	%	operation	0.01	0 – 100
Static Efficiency refers to the efficiency of a fan in converting the electrical energy consumed by the motor into static air pressure. It is the ratio of the static air power to the electrical power consumed by the motor. High static efficiency means that a larger portion of the electrical energy consumed is converted into useful static pressure, which is crucial for systems where static pressure is a key operational parameter.
`efficiencyTotal`	Total efficiency	η_total	%	operation	0.01	0 – 100
Total Efficiency measures the efficiency of a fan in converting the electrical energy consumed by the motor into the total air pressure (the sum of static an… dynamic pressure). It is the ratio of the total air power to the electrical power consumed by the motor. High total efficiency means that the fan effectively converts electrical energy into both types of pressure, which is an indicator of the overall efficiency of the system.
`energyConsumptionPerDay`	Daily energy consumption	E_d	kWh/day	operation	0.01	0 – 1 000 000
The amount of energy consumed by the fan in one day, expressed in kWh. It considers the fan's power and its operating time during the day.
`energyConsumptionPerYear`	Annual energy consumption	E_yr	kWh/yr	operation	0.1	0 – 100 000 000
The total amount of electricity consumed by the fan over the year, expressed in kWh. Calculated based on daily energy consumption and the number of working days.
`energyCostPerUnit`	Energy cost	C_kWh		operation	0.001	0 – 10 000
The price per 1 kWh of electricity. This value depends on the local energy provider and the tariff.
`FEI`	Fan Energy Index	FEI		operation	0.01	0 – 100
The Fan Energy Index (FEI) is a dimensionless metric that compares the energy efficiency of a specific fan to a standard reference fan. FEI is calculated as the ratio of the energy efficiency of the fan to the energy efficiency of the reference fan under the same operating conditions. An FEI value greater than 1 indicates that the fan is more energy-efficient than the standard reference fan, while a value less than 1 indicates lower efficiency. FEI is used to assess and compare the energy performance of different fans in their applications. It helps engineers and designers choose more energy-efficient fans, leading to lower operating costs and reduced CO₂ emissions.
`frequency`	Frequency	f	Hz	operation	0.01	0 – 200
Frequency (Hz) is a key AC current parameter, defining the number of cycles per second. In HVAC, it directly influences the rotational speed of motors (fans/pumps). Changing the frequency (via an inverter) is the primary method for stepless performance control and energy savings.
`motorLoadRatio`	Motor load ratio	M_load	%	operation	0.1	0 – 100
Motor load ratio is the ratio of the mechanical power drawn by the motor at a given operating point to its nominal mechanical power output on the shaft, expr… ssed as a percentage (%).Definition: Calculated as Poutput (actual) / Pnominal * 100%.HVAC Significance: This parameter is key to evaluating energy efficiency. Motors operating at too low a load (e.g., below 50%) have significantly reduced efficiency and a poor power factor (cos φ).Optimization: Motor selection should aim to keep the load close to 80-95% of the nominal value at the typical operating point to maximize efficiency.
`power`	Power consumption	P	W	operation	1	0 – 1 000 000
Input Power refers to the instantaneous electrical power consumed by the fan to perform its work, measured in watts (W), kilowatts (kW), or horsepower (hp). It is a key parameter affecting the energy efficiency of the ventilation system and operational costs. Input Power depends on the fan's efficiency, flow resistance in the ventilation system, and the motor's rotational speed. Regular monitoring of this power and analysis of the operating point allows for the identification of potential problems, optimization of fan performance, and minimization of energy losses.
`powerAir`	Aerodynamic power	P_air	W	operation	1	0 – 1 000 000
Aerodynamic Power refers to the instantaneous power resulting from the movement of air generated by the fan, measured in watts (W) or kilowatts (kW). It is a key operating parameter that depends on the volumetric airflow (Q) and the total pressure (p). Aerodynamic Power is calculated as the product of the airflow and the total pressure. Monitoring the instantaneous aerodynamic power allows for optimizing fan operation, improving energy efficiency, and minimizing energy losses in the ventilation system.
`powerConsumption_kW`	Power consumption in kW	P_kW	kW	operation	0.01	0 – 5 000
The electrical power consumed by the fan in kilowatts (kW) during actual operation. This value may differ from the rated power indicated on the nameplate and depends on operating conditions and load.
`powerShaft`	Shaft power	P_shaft	W	operation	1	0 – 1 000 000
Shaft Power refers to the instantaneous mechanical power transmitted by the motor shaft to the fan impeller, measured in watts (W) or kilowatts (kW). It is a key operating parameter that affects the efficiency and performance of the ventilation system. Shaft Power depends on rotational speed, torque, and the mechanical efficiency of the drive system. Monitoring the instantaneous shaft power is essential for assessing system performance, optimizing fan operation, and minimizing energy losses.
`pressure`	Required pressure	p_req	Pa	operation	1	0 – 100 000
Required pressure (measured in Pascals, Pa) is the minimum pressure (static or total) that must be generated by the device (fan, pump) in order to overcome t… e total aerodynamic/hydraulic resistance of the given installation (sum of all pressure drops) and maintain the desired flow rate (capacity).HVAC Significance: This parameter is critical for device selection. The device's characteristic curve must intersect the installation's resistance curve at the operating point where the generated pressure equals the required pressure.Purpose: This pressure is a requirement of the installation, not a parameter of the device itself.
`pressureDrop`	Pressure drop	p_drop	Pa	operation	1	0 – 10 000
Pressure drop (measured in Pascals, Pa) signifies the loss of energy (pressure) of a medium (air/water) occurring during flow through a system (e.g., ducts, … ipes, filters, heat exchangers). It is the difference in pressure between two measured points.HVAC Significance: The sum of pressure drops throughout the entire installation determines the required static pressure of the fan or pump, which is necessary to ensure the intended flow rate.Causes: Pressure drop results from two main factors: friction (linear losses, e.g., against duct walls) and local resistance (localized losses, e.g., at elbows, tees, fittings).Effects: Excessive pressure drop requires the use of a more powerful (and expensive) device, increasing energy consumption.
`pressureDynamic`	Dynamic pressure	p_dynamic	Pa	operation	1	0 – 10 000
Dynamic Pressure refers to the force exerted by the movement of air in the ventilation system, measured in pascals (Pa) or inches of water column (inH2O). It is an instantaneous operating parameter, usually measured at the fan outlet. Dynamic pressure depends on the air flow velocity and air density. Monitoring instantaneous dynamic pressure is crucial for assessing fan performance and ventilation system efficiency, helping to optimize air flow and minimize energy losses.
`pressureStatic`	Static pressure	p_static	Pa	operation	1	0 – 100 000
Static Pressure refers to the force exerted by air on surfaces within the ventilation system, measured in pascals (Pa) or inches of water column (inH2O). It is an operational parameter that affects the fan's performance and airflow within the system. Static pressure depends on flow resistance in ducts, filters, and other system components. Monitoring instantaneous static pressure is crucial for ensuring efficient operation of the ventilation system, minimizing energy losses, and providing adequate air exchange.
`pressureTotal`	Total pressure	p_total	Pa	operation	1	0 – 1 000 000
Total Pressure refers to the sum of static and dynamic pressure of air within the ventilation system, measured in pascals (Pa) or inches of water column (inH… O). It is an instantaneous operating parameter that influences the fan's performance and the efficiency of airflow. Total pressure accounts for both the force exerted by air on surfaces within the system (static pressure) and the pressure resulting from the movement of air (dynamic pressure). Monitoring instantaneous total pressure is crucial for optimizing the operation of the ventilation system, minimizing energy losses, and ensuring adequate air exchange.
`pressureTotalIncrease`	Total pressure differential	Δp_out-in	Pa	operation	1	0 – 100 000
Total pressure difference (Δpₜ) is the measured difference between the total pressure at the outlet and the total pressure at the inlet of a device (e.g., fa… or AHU), expressed in Pascals (Pa). It represents the total pressure energy delivered by the fan to the system.
`RH`	Relative humidity	RH	%	operation	0.1	0 – 100
Relative Humidity refers to the ratio of the current amount of water vapor in the air to the maximum amount that the air can hold at a given temperature, exp… essed as a percentage (%). Relative humidity affects thermal comfort, air quality, and the operation of ventilation systems. Typically, fan measurements are taken at a relative humidity of 50%, providing uniform conditions for assessing their performance. Relative humidity also affects air density, as air with higher humidity has a lower density than dry air because water vapor molecules are lighter than dry air molecules. Monitoring and controlling relative humidity are crucial for maintaining a healthy and comfortable indoor environment and ensuring optimal operating conditions for the ventilation system. Accurate management of relative humidity helps optimize the energy efficiency of fans and minimize risks associated with excessive humidity, such as mold growth or corrosion of system components.
`SFP`	Specific Fan Power	SFP	W/m³/s	operation	1	0 – 1 000 000
The Specific Fan Power (SFP) is an indicator of the energy efficiency of a fan, which determines how much electrical power is needed to move a specific amoun… of air through a ventilation system. It is measured in watts per cubic meter per second (W/(m³/s)). SFP is calculated as the ratio of the total electrical power consumed by the fan (including the motor, drive, and other system components) to the airflow generated by the fan. A low SFP value means that the fan consumes less energy per unit of air moved, indicating higher energy efficiency. In practice, reducing the SFP can be achieved by optimizing system components, such as improving duct aerodynamics, using more efficient motors, and properly adjusting fan speed.
`speed`	Rotational speed	n	rpm	operation	1	0 – 10 000
Rotational Speed refers to the instantaneous speed at which the fan rotor rotates around its axis, measured in revolutions per minute (RPM). It is a key operating parameter that affects airflow, pressure, and fan performance. Rotational speed can be adjusted based on ventilation demand, allowing system parameters to be tailored to current operational conditions. Monitoring instantaneous rotational speed is essential for maintaining optimal performance and energy efficiency of the ventilation system.
`temperatureMedium`	Medium temperature	t_med	°C	operation	1	0 – 1 000
Medium Temperature refers to the instantaneous temperature of the air or other gas flowing through the fan, measured in degrees Celsius (°C) or Fahrenheit (°F). Standard fan characteristics are generated for a temperature of 20°C, which means that many efficiency and performance parameters of the fan are defined under these conditions. The medium temperature affects the air density, which in turn can impact the fan's performance and efficiency. Monitoring the medium temperature is crucial for ensuring optimal operating conditions of the ventilation system and accurately assessing its performance under various working conditions.
`tipSpeed`	Impeller tip speed	v	m/s	operation	0.01	0 – 100
Linear velocity of a point on the rotor circumference (at the blade tip), resulting from rotational speed and rotor diameter; it defines the actual circumfer… ntial speed of rotor elements and is a key parameter for assessing mechanical loads, noise, and fan design limitations.
`torqueShaft`	Shaft Torque	T_shaft	Nm	operation	1	0 – 1 000
Shaft Torque (M) is the rotational force produced by the motor and transmitted to the load (e.g., fan impeller or pump), measured in Newton-meters (Nm).Defin… tion: It is the product of force (F) and the radius (r) at which that force acts (M = F × r).Relationship with Power: Torque is directly related to the motor's power (P) and rotational speed (ω) according to the formula: P = M × ω, where ω is expressed in radians per second.HVAC Significance: It determines the motor's ability to drive the load. In ventilation or pumping systems, the torque required by the load must be less than or equal to the torque delivered by the motor to maintain motion.
`totalHoursPerYear`	Total number of working hours in a year	hr_yr	hr/yr	operation	0.1	0 – 8 784
Total operating hours of the fan throughout the year, calculated based on the average daily hours and the number of working days.
`velocity`	Linear velocity	v	m/s	operation	0.01	0 – 100
Velocity refers to the instantaneous linear speed of air at the fan outlet, measured in meters per second (m/s). It is a key operating parameter that affects the efficiency of airflow in the ventilation system. The air velocity at the outlet depends on the fan's rotational speed, the shape of the impeller, and operational conditions. Monitoring the instantaneous air velocity at the fan outlet is essential for optimizing the performance of the ventilation system, minimizing energy losses, and ensuring adequate air exchange.
`velocityAngular`	Angular Velocity	ω	rad/s	operation	0.01	0 – 1 000
Angular velocity describes the speed of rotation of a motor shaft or fan impeller over a unit of time. It is a quantity that expresses how quickly the angle of rotation changes, often measured in radians per second (rad/s). Unlike rotational speed (revolutions per minute, RPM), angular velocity describes circular motion rather than the number of full cycles. It is a key parameter for torque calculations and is directly related to the mechanical power of the fan.
`volume`	Airflow	q_V	m³/h	operation	1	0 – 1 000 000
Airflow is the instantaneous amount of air moving through the fan, measured in cubic meters per hour (m³/h) or cubic feet per minute (CFM). It depends on operational conditions such as fan speed, static pressure, and flow resistance in the ducts. Airflow can vary based on ventilation demand and control system adjustments. Monitoring instantaneous airflow is crucial for maintaining optimal performance of the ventilation system and appropriate environmental conditions.
`volumeMass`	Mass flow	q_m	kg/s	operation	0.001	0 – 1 000
Mass Airflow refers to the instantaneous mass of air moving through the fan, measured in kilograms per second (kg/s) or pounds per minute (lb/min). It is a variable operating parameter, dependent on air density, fan rotational speed, static pressure, and flow resistance in the ducts. Mass airflow can vary based on ventilation demand and control system adjustments. Monitoring instantaneous mass airflow is crucial for ensuring optimal ventilation system performance and appropriate environmental conditions.
`workingDaysPerYear`	Working days per year	d_yr	d/yr	operation	1	0 – 366
Number of days in a year when the fan is in use. This value depends on the specifics of the facility and seasonality.
`_Lwa2`	Sound power level emitted from the casing	L_{wa, 2}	dB(A)	operation	0.1	0 – 120
The Sound Power Level Emitted from the Enclosure refers to the amount of sound generated by the device's enclosure in all directions, regardless of the surro… nding conditions, expressed in decibels. Importance of the Sound Power Level Emitted from the Enclosure: Acoustic Comfort: High sound power levels emitted from the enclosure can be a source of unpleasant noise, affecting user comfort in workplaces, residences, and public spaces. Health and Safety: Prolonged exposure to high noise levels can lead to health issues such as hearing loss, stress, and other noise-related ailments. Compliance with Standards: Regulations and standards concerning the maximum allowable noise levels emitted by devices require adherence to specific values to ensure legal compliance. The sound power level is typically measured under laboratory conditions in accordance with international standards such as ISO 3744 or ISO 3746.
`currentMaxAllowed`	Current max allowed	I_{max, allowed}	A	electric	0.01	0 – 1 000
Defines the maximum current value (in Amperes, A) that an electrical component (e.g., motor, power supply, cable) can continuously and safely draw or conduct… without the risk of overheating or damage.HVAC Significance: This is a critical parameter for the correct selection of protection devices (fuses, circuit breakers) and the sizing of power supply cables to the motor.Nominal Value: The maximum permissible current (Imax) is usually higher than the rated current (In) indicated on the nameplate to account for short-term overloads.Safety: Exceeding this value for an extended period leads to overheating and insulation failure of the motor or component.
`currentMinAllowed`	Current min allowed	I_{min, allowed}	A	electric	0.01	0 – 1 000
`currentRated`	Rated Current	I_rated	A	electric	0.01	0 – 1 000
Rated current refers to the standard current that a device, such as a fan, should draw when operating under optimal conditions. This is a critical parameter when selecting and operating electrical equipment as it provides information about the current the device should draw under normal usage conditions. For fans and other motorized devices, the rated current: Designation and Standards: It is denoted by the letter “I” with the subscript “n” according to international standards, and is part of the basic technical specification. Measurement: It is measured in amperes (A) and specifies the standard current value at which the motor operates under nominal conditions, i.e., typical designed load and supply voltage conditions. Practical Application: Used for selecting appropriate electrical protections (e.g., fuses, circuit breakers) and power supply cables to avoid overheating or overloads, which can lead to equipment damage. Constant Value: The rated current value is fixed and determined by the manufacturer based on the device's design and material characteristics. Exceeding this value may indicate that the device is operating under adverse conditions, which can lead to increased energy consumption, excessive mechanical component wear, or even failure. Design Context: In fan selection programs, rated current helps engineers and designers select appropriate fan models and evaluate their performance in the context of electrical and thermal installations.
`frequencyRated`	Rated Frequency	f_rated	Hz	electric	1	50, 60, 50/60, 60/50
Rated Frequency refers to the standard frequency of electrical power at which a device, such as a fan or motor, is designed to operate. It is a key parameter affecting the performance, rotational speed, and energy efficiency of electrical devices. Importance of Rated Frequency: Rotational speed: The rated frequency directly influences the rotational speed of the motor. Induction motors, for example, have a rotational speed proportional to the supply frequency. Performance: Devices designed to operate at a specified rated frequency achieve optimal performance at that frequency. Operating at a different frequency can lead to decreased performance and increased energy consumption. Compatibility: Rated frequency is crucial for the compatibility of the device with the power supply system. For example, in North America, the standard frequency is 60 Hz, while in Europe and many other parts of the world, the standard is 50 Hz. Energy efficiency: Devices designed to operate at a specified rated frequency are optimized for energy efficiency. Operating at a different frequency can result in inefficient energy use. Typical Rated Frequency values: 50 Hz: This is the standard power frequency in most countries in Europe, Asia, Africa, and Australia. Devices designed to operate at this frequency are adapted to the power systems used in these regions. 60 Hz: This is the standard power frequency in North America, parts of South America, and a few other countries. Devices designed to operate at this frequency are adapted to the power systems used in these regions.
`heatPowerRated`	Heating capacity	P_heat	W	electric	1	0 – 1 000 000
Heating Capacity is the amount of heat (kW) delivered to the installation per unit of time. It defines the ability of the unit (e.g., heat pump, heater) to heat air or medium.
`phase`	Number of electrical phases	φ		electric	1	1, 3
The Number of Electrical Phases refers to the number of current-carrying conductors that deliver electrical power to a motor or device. It is a key parameter in the design and selection of electrical equipment. Single-phase (1-phase): Used in smaller domestic and some commercial appliances. Power is delivered through one phase wire and one neutral wire. Typical voltage is 230V. Three-phase (3-phase): Used in large industrial and commercial equipment. Power is delivered through three phase wires. Typical voltage is 400V. It provides a more balanced load and higher efficiency. A single-phase motor can be used in small pumps, fans, and household tools. A three-phase motor is used in large compressors, large HVAC systems, industrial machinery, and places where high power and reliability are required. The number of phases affects how power is delivered to the motor or device, which in turn affects its performance, stability, and installation cost. Three-phase power is more efficient and stable, making it the preferred choice for industrial applications. Knowing the number of electrical phases is essential when designing and installing electrical systems to ensure the proper performance and reliability of devices. Limitations: Single-phase systems can deliver limited power and are less efficient compared to three-phase systems. Three-phase systems require more complex electrical installations and can be more expensive to install and maintain. Example: A single-phase motor has one phase wire and one sinusoidal current wave, while a three-phase motor is powered by three separate phase wires, with the current in each phase shifted by 120 degrees relative to each other, providing smoother power delivery.
`powerMaxAbsorbed`	Maximum power consumption	P_{max, abs}	W	electric	1	0 – 1 000 000
Maximum Power Consumption is the highest electrical power (W/kW) an HVAC unit can draw under peak load. Crucial for sizing fuses and power cables.
`powerRated`	Rated power	P_rated	W	electric	1	0 – 1 000 000
Rated Power refers to the maximum power that an electrical device, such as a fan motor, can deliver during continuous operation at nominal load and voltage. It is a key parameter that defines the device's ability to perform mechanical work. Importance of Rated Power: Work Efficiency: Defines the maximum power the motor can generate, which affects its ability to move air. The higher the rated power, the greater the fan's efficiency. Safety: Exceeding the rated power can lead to overheating, mechanical damage, and motor failure. Therefore, it is important not to overload the device beyond its rated power. Energy Efficiency: Motors operating close to their rated power are more energy efficient, which means lower energy consumption and reduced operating costs. Device Lifespan: Regularly exceeding the rated power can shorten the motor's lifespan due to increased wear and mechanical stress.
`terminalBoxProtection`	Protection rating of the terminal box	IP_box		electric		IP20, IP21, IP22, IP23, IP30, IP40, IP41, IP43, IP44, IP45 +11 more IP54, IP55, IP57, IP64, IP65, IP66, IP67, IP68, IPX2, IPX4, IPX5
`voltageRated`	Rated voltage	U_rated	V	electric	1	12, 24, 120, 220, 220/380, 230, 230/400, 380, 400, 400/690 +4 more 415, 440, 480, 690
Rated Voltage refers to the specific voltage at which an electrical device, such as a motor, is designed to operate. It is a key parameter indicating the required supply voltage for the proper functioning of the device. The rated voltage represents the optimal voltage at which the device operates most efficiently and safely. It relates to the voltage provided by the power source. Typical values: 230V: Commonly used in single-phase household and commercial appliances. 400V: Typical for three-phase industrial systems. A motor with a rated voltage of 230V is intended for operation in a single-phase network with a voltage of 230V. A motor with a rated voltage of 400V is intended for operation in a three-phase network with a voltage of 400V. Using the device at a voltage other than the rated voltage may lead to damage, reduced performance, or even dangerous situations. Therefore, it is important that electrical devices are supplied with voltage matching their rated voltage. Knowing the rated voltage is essential when selecting and installing electrical devices to ensure their optimal performance and safety.
`motorCurrentRated`	Rated motor current	I_{motor, rated}	A	motor	0.01	0 – 1 000
Rated Motor Current is the value of current that an electric motor draws at full load and nominal supply voltage. Rated current is a key parameter that determines how much current the motor needs to operate under the conditions specified by the manufacturer. This value is important for selecting the appropriate electrical protection, supply cables, and for evaluating the motor's energy efficiency. The measurement of rated current is carried out under standard conditions according to industrial standards such as IEC 60034. Rated current is given in amperes (A) and can be found on the motor's nameplate. Knowing the rated current is important when designing power systems because it helps in selecting appropriate overload protection and cables that can withstand the current load. Rated current also indicates the motor's energy efficiency – lower current at the same power means higher efficiency. Example: A motor with a power of 5 kW and a rated current of 10 A means that the motor draws 10 amperes of current at full load. When selecting protections and cables for this motor, this value must be considered to ensure safe and reliable operation of the system.
`motorEfficiencyClass`	Motor energy efficiency class	η_{motor, class}		motor		IE1, IE2, IE3, IE4, IE5, IE6
The Motor Efficiency Class (Polish: Klasa Efektywności Energetycznej Silnika) is a parameter classifying electric motors based on their energy efficiency. The motor efficiency class determines how effectively the motor converts electrical energy into mechanical energy, according to international standards such as IEC 60034-30-1. Motors are classified into various efficiency classes: IE1, IE2, IE3, IE4, and higher. IE1 is the basic efficiency class, IE2 indicates higher efficiency, IE3 is the premium standard, and IE4 is super premium, offering the highest energy efficiency. Efficiency measurement is carried out in accordance with established standards that define testing methods and operating conditions. Energy efficiency is measured as the ratio of output mechanical power to input electrical power and is expressed as a percentage. Energy efficiency class is crucial when selecting motors, helping engineers and system designers choose motors that consume less energy, leading to lower operating costs and reduced environmental impact. Higher efficiency motors, such as IE3 or IE4, are often required by regulations and standards in new industrial and commercial installations. Higher energy efficiency typically involves higher initial purchase costs for the motor, but these costs are often offset by energy savings over the long-term use. Energy efficiency can also depend on operating conditions, such as load and ambient temperature. An IE3 (Premium Efficiency) motor meets high energy efficiency standards, typically resulting in energy savings of 1-5% compared to an IE2 (High Efficiency) motor. For large industrial installations, these savings can significantly reduce operating costs. Choosing a higher efficiency motor not only meets regulatory requirements but also contributes to reduced energy consumption and CO2 emissions, which is beneficial both economically and environmentally.
`motorEfficiencyMax`	Maximum motor efficiency	η_{motor, max}	%	motor	0.01	0 – 100
Maximum Motor Efficiency (Polish: Maksymalna Sprawność Silnika) is the highest possible energy efficiency that an electric motor can achieve under optimal op… rating conditions. It is a percentage indicator that shows how effectively the motor converts electrical energy into mechanical energy. Maximum motor efficiency is measured under standard laboratory conditions, according to standards such as IEC 60034-2-1, at optimal load and ambient temperature. This value indicates how efficient the motor is, helping engineers choose motors with lower operating costs and reduced environmental impact. Although maximum efficiency is an ideal indicator, actual operating efficiency may be lower due to variables such as load fluctuations and component wear. Example: A motor with a maximum efficiency of 96% means that 96% of the electrical energy is converted into mechanical energy, with only 4% being lost. Such a motor is highly efficient and suitable for applications where minimizing energy loss is a priority.
`motorFrameSize`	Motor frame size	Fr_motor		motor
Motor Frame Size refers to the physical dimensions and mounting properties of an electric motor, as defined by standards such as NEMA or IEC. The frame size includes: Shaft height: distance from the base to the center of the motor shaft Frame length and width: dimensions of the motor base Mounting hole spacing: distances between mounting holes Shaft diameter: diameter of the motor shaft Frame size is crucial when selecting or replacing a motor to ensure a proper fit within an existing mounting system. For example, a motor with a frame size of 56C has specific dimensions that allow it to be mounted without modification in standard applications. Other example designations include 48, 143T, 145T, 182T, and 184T. The appropriate frame size ensures optimal performance and longevity of the motor in a given application.
`motorInsulationClass`	Motor insulation class	Ins_{motor, class}		motor		A, E, B, F, H, N, R, S, C
The Motor Insulation Class defines the maximum temperature that the insulation materials in the motor can withstand without deteriorating. It affects the durability and reliability of the motor in demanding conditions. The insulation classes are: A: max. operating temp. 105°C E: max. operating temp. 120°C B: max. operating temp. 130°C F: max. operating temp. 155°C H: max. operating temp. 180°C N: max. operating temp. 200°C R: max. operating temp. 220°C S: max. operating temp. 240°C C: max. operating temp. >240°C A higher insulation class means greater resistance to high temperatures, allowing operation in harsher conditions. Insulation is tested according to standards such as IEC 60085. Motors with higher insulation classes are preferred in high-temperature or heavy-duty environments. A motor with insulation class F can operate in temperatures up to 155°C without risking insulation damage. The insulation class is a key parameter when selecting a motor for specific working conditions, ensuring its reliability and longevity.
`motorPoles`	Number of motor poles	p_motor		motor		2, 4, 6, 8, 10, 12, 2/4, 4/8
The Number of Motor Poles refers to the number of pairs of magnetic poles in the rotor or stator of an electric motor. The number of motor poles directly affects the rotational speed and operational characteristics of the motor. Motors can have different winding configurations, such as 2 poles or 4 poles, which allows for a change in rotational speed. The number of poles is determined during the motor design and is based on the construction of the electromagnetic system. The poles are identified by analyzing the winding configuration in the stator or rotor, or they are specified in the motor's technical documentation. The number of poles affects the synchronous speed of the motor, which depends on the supply frequency. Motors with fewer poles achieve higher speeds, while motors with more poles rotate slower but with higher torque. Some motors can be designed with two sets of windings, such as 2/4 poles, allowing operation at two different speeds. The number of poles is fixed during the design stage and cannot be changed during operation. It determines the maximum synchronous speed of the motor and influences the size, cost, and suitable applications of the motor. A 4-pole motor, powered by alternating current with a frequency of 50 Hz, has a synchronous speed of about 1500 RPM. A 2/4-pole motor can switch between speeds of 3000 RPM (2 poles) and 1500 RPM (4 poles), which is useful in applications requiring variable speed, such as fans with adjustable output.
`motorPowerRatedHP`	Motor rated power in HP	P_{motor, rated, HP}	hp	motor	0.01	0.12, 0.16, 0.25, 0.33, 0.5, 0.75, 1, 1.5, 2, 3 +28 more 5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 75, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600, 700, 800, 900, 1000, 1250, 1500
Motor Power Rated refers to the maximum power an electric motor can deliver during continuous operation, expressed in horsepower (HP). It is a key parameter indicating the motor's ability to perform mechanical work under nominal load and supply voltage. The rated power is specified on the motor's nameplate and indicates the power the motor can deliver without overheating while maintaining its efficiency. This value is established under standard test conditions. Knowing the motor's rated power is crucial when selecting a motor for a specific application. It helps engineers and designers choose the appropriate motor that will provide the required performance and energy efficiency. The rated power also influences the selection of other system components such as electrical protection, power cables, and starters. Example: A motor with a rated power of 5 HP can deliver 5 horsepower of mechanical power at nominal load and voltage. Such a motor is suitable for applications requiring moderate power, such as pumps, fans, compressors, or small industrial machines. The motor's rated power is a key parameter that ensures the motor will operate efficiently and reliably in a given application, while maintaining long life and minimal risk of failure.
`motorPowerRatedKw`	Motor rated power in kW	P_{motor, rated, kW}	kW	motor	0.01	0.09, 0.12, 0.18, 0.25, 0.37, 0.55, 0.75, 1.1, 1.5, 2.2 +30 more 3, 4, 5.5, 7.5, 11, 15, 18.5, 22, 30, 37, 45, 55, 75, 90, 110, 132, 160, 200, 250, 315, 355, 400, 450, 500, 560, 630, 710, 800, 900, 1000
Motor Power Rated refers to the maximum power an electric motor can deliver during continuous operation, expressed in kilowatts (kW). It is a key parameter that determines the motor's ability to perform mechanical work under nominal load and supply voltage. The rated power is specified on the motor's nameplate and indicates the work the motor can perform without overheating while maintaining its efficiency. This value is established under standard test conditions. Knowing the motor's rated power is crucial when selecting a motor for a specific application. It helps engineers and designers choose the appropriate motor that will provide the required performance and energy efficiency. The rated power affects the selection of other system components such as electrical protection, power cables, and starters. Example: A motor with a rated power of 5 kW can deliver 5 kilowatts of mechanical power at nominal load and voltage. Such a motor is suitable for applications requiring moderate power, such as pumps, fans, compressors, or small industrial machines. The motor's rated power is a key parameter that ensures the motor will operate efficiently and reliably in a given application, while maintaining long life and minimal risk of failure.
`motorPowerReserve`	Motor power reserve	rs_{motor, power}	%	motor	0.1	0 – 100
Motor Power Reserve (Polish: Rezerwa Mocy Silnika) is a percentage indicator that specifies the excess power a motor can deliver above its rated value. The motor power reserve indicates how much a motor can be overloaded without risk of damage or excessive wear. It is measured as the difference between the maximum power the motor can generate and its rated power, expressed as a percentage of the rated power. In practice, the power reserve ensures safety and reliability in situations where load demands may temporarily exceed the motor's rated parameters. This is especially important in industrial applications where unforeseen load changes can occur frequently. For example, if a motor with a rated power of 100 kW has a power reserve of 10%, it means it can provide an additional 10 kW of power without risk of damage. A 10% power reserve means the motor can operate at 110 kW for a short period. Power reserve is a crucial parameter when selecting motors for applications where temporary overloads are possible, ensuring that the motor will operate reliably and efficiently even under unpredictable working conditions.
`motorProtection`	Motor protection class IP	IP_motor		motor		IP20, IP21, IP22, IP23, IP30, IP40, IP41, IP43, IP44, IP45 +11 more IP54, IP55, IP57, IP64, IP65, IP66, IP67, IP68, IPX2, IPX4, IPX5
The Motor Protection Rating IP (Polish: Klasa Ochrony Silnika IP) defines the degree of protection against the ingress of solid objects and water, according … o IEC 60529. This rating is expressed by two digits following the letters IP. Definition and significance of each digit: The first digit indicates the degree of protection against the ingress of solid objects (e.g., dust, dirt). The second digit specifies the degree of protection against the ingress of water. First digit (protection against solid objects): 0: No protection against solid objects. 1: Protection against solid objects 50 mm and larger. 2: Protection against solid objects 12.5 mm and larger. 3: Protection against solid objects 2.5 mm and larger. 4: Protection against solid objects 1 mm and larger. 5: Protection against dust in quantities not interfering with the operation of the equipment (partial protection against dust). 6: Complete protection against dust. Second digit (protection against water): 0: No protection against water. 1: Protection against vertically falling drops of water. 2: Protection against drops of water falling at an angle up to 15 degrees. 3: Protection against water spray at an angle up to 60 degrees. 4: Protection against water splashes from any direction. 5: Protection against water jets (nozzles) from any direction. 6: Protection against strong water jets or heavy seas. 7: Protection against the effects of temporary immersion in water. 8: Protection against the effects of continuous immersion in water under specified pressure. Example: If a motor has a protection rating of IP65, this means: 6: Complete protection against dust. 5: Protection against water jets from any direction. Thanks to the IP protection rating, it is easy to determine how well the motor is protected against external factors, which is crucial when selecting a motor for specific working conditions, such as environments with high dust or humidity.
`motorProtectionType`	Motor protection type	Prot		motor		-, KL, STB, PTC, OL, F/MCB, MMS, RP/PRF, LB, OH
The type of motor protection specifies the method of protecting the fan motor against damage. KL (Klixon): Thermal protection built into the motor windings, bimetallic. STB (Thermal contactor): Overheating protection requiring manual or automatic resetting. PTC (Positive Temperature Coefficient): Thermistor sensors in the windings; resistance increases sharply with temperature. OL (Overload): Protection against overcurrent, e.g., thermal relay.F/MCB (Fuse/Motor Circuit Breaker): Current and short-circuit protection (fuse) or comprehensive motor circuit breaker. MMS (Motor Manual Starter): Manual motor starter/switch with thermal protection. RP/PRF (Phase Protection Relay): Protection against incorrect phase sequence or phase loss. LB (Load Limiter): Protection against exceeding the maximum permissible load.OH (Overheating): General protection against excessive motor temperature.
`motorShaftDiameter`	Shaft diameter	D_shaft		motor	1	0 – 500
`motorSpeedRated`	Rated motor speed	n_{motor, rated}	rpm	motor	1	0 – 10 000
Motor Speed Rated (Polish: Prędkość Obrotowa Nominalna Silnika) is the standard speed at which an electric motor operates according to its design specificati… ns. It is expressed in revolutions per minute (RPM). The rated speed of the motor indicates the speed at which the rotor rotates during normal operation under nominal load and power supply. This value is crucial for ensuring the optimal performance and efficiency of the motor. The measurement of the rated speed is carried out under standard laboratory conditions in accordance with industrial standards. This speed is established for optimal operating conditions, such as stable power supply and appropriate load. The rated speed is an important parameter when selecting a motor for a specific application. It helps engineers design systems by enabling them to choose the appropriate motor to provide the required performance. It is also significant in establishing maintenance schedules and in the diagnostics and optimization of system performance. Example: A motor with a rated speed of 1500 RPM means that under normal operating conditions and nominal load, the rotor of the motor rotates at a speed of 1500 revolutions per minute. In practice, ensuring that the motor operates close to this speed is key to its efficiency and longevity.
`motorStaringMethod`	Motor starting method	S_{motor, start}		motor		DOL, Y/Δ, VFD, ATS, RRS
Motor Starting Method refers to the way an electric motor is initiated, which affects its performance, torque, and starting current. Motor starting methods include: Direct-On-Line Starting (DOL): The motor is directly connected to the power supply, resulting in high torque and high starting current. This is the simplest and cheapest method, mainly used for small motors. Star-Delta Starting (Y-Δ): The motor initially operates in a star configuration, which reduces the voltage and starting current. It then switches to the delta configuration, allowing for full voltage and torque. This method reduces the load on the power grid during startup. Autotransformer Starting (ATS): Reduces the voltage during startup and then gradually increases it to full voltage. This method reduces the starting current and is used in large motors. Resistance Starting (RRS): Resistors are connected into the supply circuit during startup, which limits the starting current. The resistors are gradually removed as the motor reaches full speed. Mainly used in wound-rotor induction motors. Variable Frequency Drive Starting (VFD): Allows for smooth ramping of voltage and frequency, which controls the motor speed and torque. It provides a soft start and minimizes the starting current, used in modern high-efficiency systems. Example: The selection of the appropriate starting method depends on the application requirements, available resources, and specific operating conditions. For large industrial motors, star-delta or VFD starting may be more suitable due to reduced starting current and gentle start.
`motorSupplyType`	Motor power supply type	Tp_{motor, supply}		motor		AC, EC, DC
Motor Supply Type refers to the kind of electrical current used to power the motor. Different types of power supply affect the motor's operating characteristics, performance, and application. AC (Alternating Current): Motors powered by alternating current are most commonly used in industrial and household applications. They can be single-phase or three-phase. Examples include induction and synchronous motors. DC (Direct Current): Motors powered by direct current offer good speed and torque control. They are used in applications requiring precise control, such as electric vehicles, CNC machines, and portable devices. EC (Electronically Commutated): EC motors are modern direct current motors that use electronics for commutation. They are highly efficient and quiet, used in fans, pumps, and HVAC equipment. An AC motor is ideal for general industrial applications, such as pumps and compressors. A DC motor is used in electric vehicles due to excellent torque control. An EC motor is chosen for applications requiring high energy efficiency and low noise levels, such as HVAC systems. Understanding the motor supply type is crucial when selecting the right motor for a given application to ensure optimal performance and reliability.
`motorTorque`	Motor torque	τ_motor	Nm	motor	0.01	0 – 1 000
Motor Torque is the rotational force generated by the motor, causing the shaft to turn. It is a key parameter defining the motor's ability to perform mechanical work. Torque is measured in Newton-meters (Nm) or pound-inches (lb-in). The torque value depends on the motor design, power supply type, and load. Motors with higher torque are more effective in driving heavy machinery and equipment. In practice, torque is essential during startup, when the motor must overcome the inertia of the initial mass, and during operation under load, where it must maintain sufficient torque to drive the equipment. Example: A 5 kW motor operating at 1500 RPM generates a torque of about 31.8 Nm. Such torque is crucial for applications like driving conveyor belts, pumps, or compressors, where consistent and strong rotational action is required. Knowledge of the motor torque is necessary for selecting the appropriate motor for specific tasks to ensure its optimal performance and durability.
`motorWeight`	Motor weight	m_motor	kg	motor	0.01	0 – 10 000
`windingConnection`	Winding connection	W_motor		motor		, 1~, Y, Δ, Δ/Y, Y/Δ
Winding Connection refers to the way electric motor windings are connected, which influences its electrical properties and performance. There are two main types of winding connections: star (Y) and delta (Δ). Star (Y): In a star connection, the ends of the windings are joined at a single point, creating a neutral point, and the other ends are connected to the power supply. This type of connection lowers the voltage across each winding, which reduces the starting current. This is advantageous for starting high-power motors. Delta (Δ): In a delta connection, the windings are connected in a closed circuit, forming a triangle. Each winding is connected across two supply phases. This connection allows for the full utilization of the supply voltage and provides higher torque and greater motor power. Significance: Choosing the appropriate winding connection affects the motor's operating characteristics, including its voltage, current, and torque. The star connection is often used during starting, and the delta connection during normal operation. Example: A three-phase motor may be designed to operate in a star-delta configuration, where starting occurs in the star connection (lower voltage and current), and after reaching the appropriate speed, it switches to the delta connection (full voltage and higher torque). Knowledge of the winding connection type is crucial during the installation and maintenance of electric motors to ensure their optimal performance and operational safety.
`fireResistanceClass`	Fire resistance class	F_class		temperature		F120, F200, F300, F400, F600
A critical class for Smoke Extract Fans (EN 12101-3).Definition: Specifies the minimum time (in minutes, e.g., F400) the fan must maintain its Functionality … F) and mechanical integrity during a fire, while conveying high-temperature gases (e.g., 300°C or 400°C).F120: 120 minutes of operation.F400: 400 minutes of operation (often required for tunnels and underground garages).Significance: Crucial for safe evacuation and firefighting operations.
`temperatureAmbientCurrentMax`	Ambient temperature at maximum current	t_{amb, curr, max}	°C	temperature	1	20 – 200
Maximum Ambient Temperature at Maximum Current refers to the highest ambient temperature at which a fan can operate at its maximum current without risk of da… age, performance loss, or shortened lifespan. This is a crucial parameter that ensures the safety and reliability of the device in demanding conditions. Importance of maximum ambient temperature at maximum current: Reliability: Operating at temperatures above this value can lead to overheating of electrical components, such as motor windings and insulation, which can cause failures and damage to the fan. Performance: High temperatures can reduce the fan's ability to operate at maximum current, leading to a decrease in air handling performance. Safety: Operating in extremely high ambient temperatures increases the risk of overheating, which can lead to mechanical and electrical damage, and even fire. Factors affecting maximum ambient temperature at maximum current: Winding material: High-temperature insulation materials are crucial for withstanding higher ambient temperatures at maximum current. Lubrication: The type of lubricant used in bearings affects the ability to operate in high temperatures, as high-temperature lubricants can effectively function at elevated temperatures. Cooling: Additional cooling systems can help maintain appropriate operating temperatures for components, allowing operation at maximum current in higher ambient temperatures. Motor design: Motors designed with efficient heat dissipation in mind can operate in higher ambient temperatures without overheating.
`temperatureAmbientMax`	Maximum ambient temperature	t_{amb, max}	°C	temperature	1	20 – 200
Maximum Ambient Temperature refers to the highest surrounding temperature at which a fan can operate without risk of damage, performance loss, or shortened l… fespan. This is a crucial parameter when selecting and designing ventilation systems for various environments. Importance of maximum ambient temperature: Reliability: Operating at temperatures above the maximum ambient temperature can lead to overheating of components such as the motor, bearings, and control electronics, causing failures. Performance: High ambient temperatures can reduce fan performance by increasing mechanical resistance and lowering cooling efficiency. Safety: In extreme ambient temperatures, the risk of overheating increases, posing a hazard to both equipment and personnel working nearby. Factors affecting maximum ambient temperature: Material of the impeller and blades: High-temperature-resistant materials like stainless steel, aluminum, and composites can withstand higher ambient temperatures. Lubrication: High-temperature lubricants in the bearings help maintain performance and reliability at elevated temperatures. Motor: Electric motors must be designed to operate in high ambient temperatures, with proper thermal insulation and cooling. Cooling and ventilation: Additional cooling systems can help maintain appropriate operating temperatures for fan components.
`temperatureMediumMax`	Maximum medium temperature	t_{med, max}	°C	temperature	1	20 – 800
Maximum Medium Temperature refers to the highest temperature of the medium with which the fan can safely operate. This parameter is crucial for ensuring the safe and efficient operation of the fan in various applications. Importance of maximum medium temperature: Reliability: Operating with a medium at a temperature higher than the maximum allowable can lead to mechanical damage, overheating of bearings, blades, and the fan motor. It can also cause failures in the electrical insulation of the motor. Performance: High medium temperature can alter the physical properties of the materials from which the fan is made, affecting its performance. This can lead to a decrease in the efficiency of moving the medium. Safety: Operating at extremely high medium temperatures can pose a safety hazard both to the equipment and to the personnel working nearby due to the increased risk of overheating and potential failures. Factors affecting maximum medium temperature: Impeller and blade material: Materials such as stainless steel, aluminum, and high-temperature composites can withstand higher medium temperatures compared to standard plastics. Lubrication: The type of lubricant used in the bearings significantly affects the maximum medium temperature. Specialized high-temperature lubricants can function effectively at higher temperatures. Fan design: Fans designed to operate with high-temperature mediums often have additional cooling or special thermal insulation to protect components from overheating. Cooling: Additional cooling systems can help protect the fan components from the high medium temperature.
`temperatureOperatingMax`	Maximum operating temperature	t_{op, max}	°C	temperature	1	20 – 200
Maximum Operating Temperature refers to the highest temperature at which a fan can operate without risk of damage, reduced performance, or shortened lifespan. This is a crucial parameter to consider when designing and selecting a fan for various applications. Importance of maximum operating temperature: Reliability: Operating at temperatures above the maximum can lead to overheating of components, bearing damage, warping of impeller blades, and motor damage, which can result in fan failures. Performance: High temperatures can alter the properties of the materials the fan is made of, leading to reduced efficiency and effectiveness of ventilation. Safety: Operating at extremely high temperatures can pose a safety hazard for both the equipment and the personnel working nearby. Factors affecting maximum operating temperature: Material of the impeller and blades: Materials such as stainless steel, aluminum, and high-temperature composites can withstand higher temperatures compared to standard plastics. Lubrication: The type of lubricant used in the bearings significantly impacts the maximum operating temperature. Specialized high-temperature lubricants can operate effectively at higher temperatures. Motor: Electric motors have maximum operating temperature limitations due to the sensitivity of electrical components and insulation to high temperatures. Thermal insulation: Using appropriate insulating materials can help protect the fan components from high temperatures.
`temperatureOperatingMin`	Minimum operating temperature	t_{op, min}	°C	temperature	1	-50 – 20
Minimum Operating Temperature refers to the lowest temperature at which a fan can operate without risk of damage or loss of performance. This parameter is crucial to ensure the reliable operation of the fan in various environmental conditions. Importance of minimum operating temperature: Reliability: Operating at temperatures below the minimum can lead to lubricant freezing, material brittleness, and other mechanical issues, resulting in failures and damage to the fan. Performance: At low temperatures, some materials may change their properties, affecting the fan's performance. For example, the flexibility of drive belts may decrease, impacting power transmission. Safety: Operating in extremely low temperatures can pose a safety risk for both the equipment and the personnel working nearby. Factors affecting minimum operating temperature: Material of the impeller and blades: Some materials, like plastics, may become brittle at low temperatures, while metals generally retain their properties. Lubrication: The type of lubricant used in the fan's bearings significantly impacts the minimum operating temperature. Synthetic lubricants can operate at lower temperatures compared to mineral lubricants. Motor: Electric motors may have minimum operating temperature limitations due to the sensitivity of electrical and magnetic components to low temperatures.
`efficiencyImpellerMax`	Maximum impeller efficiency	η_{imp, max}	%	efficiency	0.01	0 – 100
It determines the highest aerodynamic efficiency of the rotating part of the fan itself, excluding losses generated by the motor or the control system. This parameter indicates how effectively the blade profile and impeller design convert the shaft's mechanical energy into airflow energy. It is a key indicator of mechanical design quality, determining the energy-saving potential of the entire device.
`efficiencyInverterMax`	Maximum inverter efficiency	η_{vfd, max}	%	efficiency	0.01	0 – 100
It determines the highest energy efficiency of the speed control system (inverter), achieved at the optimal load point. This parameter indicates what portion of the electric energy drawn from the grid is effectively transmitted to the motor after accounting for losses due to frequency conversion and heat. The higher this value, the lower the energy losses in the process of regulating the device's performance.
`efficiencyMotorMax`	Maximum motor efficiency	η_{motor, max}	%	efficiency	0.01	0 – 100
It determines the highest energy efficiency of the fan motor itself, achieved at optimal load. This parameter indicates what portion of the consumed electrical energy is converted into mechanical work on the shaft, and what part is irretrievably lost (e.g., as heat). High maximum motor efficiency, typical for EC technology or premium IE4/IE5 classes, is key to reducing the total operating costs of the device.
`efficiencyStaticMax`	Maximum static efficiency	η_{static, max}	%	efficiency	0.01	0 – 100
It determines the highest fan efficiency at the operating point where energy losses are lowest, considering only the useful static pressure rise. Unlike total efficiency, it ignores the kinetic energy of the air at the outlet, making it a key parameter when selecting devices for ducted systems, where the primary concern is the ability to overcome system resistance.
`efficiencyTotalMax`	Maximum total efficiency	η_{total, max}	%	efficiency	0.01	0 – 100
A parameter defining the highest possible energy efficiency that the fan achieves at its best efficiency point (BEP). It accounts for the total power transferred to the air, including both the static pressure rise and the kinetic energy resulting from the air velocity at the outlet, allowing for an assessment of the actual utilization of the consumed electrical power.
`FEG`	Fan Energy Grade (FEG)	FEG		efficiency	1	0 – 100
The Fan Energy Grade (FEG) is a parameter that classifies the aerodynamic efficiency of the fan itself (excluding the motor and drive) based on its design an… size. According to the AMCA 205 standard, this value defines the energy-saving potential of the device – the higher the FEG rating, the higher the maximum efficiency the fan can achieve. It is a useful parameter primarily at the design stage, allowing for the comparison of the mechanical manufacturing quality of different models, regardless of the drive used.
`ductConcentration`	Maximum dust concentration	c_duct	g/m³	hydrodynamic	0.01	0 – 1 000
The parameter defines the maximum solid fraction content in the medium, above which accelerated abrasive wear of the working elements and the risk of losing … he dynamic balance of the impeller occur. This value determines the necessity of using reinforcements (e.g., hard-facing on the blades) and influences the selection of vibration isolation and reserve motor power due to the increased density of the mixture.
`pressureDropKsi`	Local loss coefficient	ξ		hydrodynamic	0	0 – 1
The local loss coefficient describes the resistance that air encounters in ventilation system components such as bends, tees, or reducers. It is a dimensionless value used to calculate the localized pressure drop. A high coefficient means high resistance and a large pressure loss across the given component. The pressure loss is related to this coefficient and increases proportionally to the square of the air flow velocity.
`pressureDropVelocityKsi`	Local loss coefficient	ξ_vel		hydrodynamic	0	0 – 100
`pressureStaticMax`	Maximum static pressure	p_{static, max}	Pa	hydrodynamic	1	0 – 100 000
Maximum static pressure is the highest pressure a fan can generate, measured without considering airflow. Maximum static pressure is the highest pressure a fan can generate when operating in a closed system (at zero airflow). It is an indicator of the fan's ability to overcome resistance in the system, such as ducts, filters, and other installation elements. Static pressure is typically measured under laboratory conditions when the fan's outlet is completely closed, simulating no airflow. It is measured using manometers or other pressure sensors. Maximum static pressure is crucial in designing ventilation systems where overcoming airflow resistance in installations is important. It helps determine how effectively a fan will handle airflow in a system that may include various restrictive elements, such as long ducts or dense filters. Maximum pressure is a theoretical value determined under specific conditions, which may be difficult to achieve in actual applications. In real working conditions, the pressure generated by the fan is usually lower due to the presence of airflow and resistance in the system. A fan with a maximum static pressure of 1000 units can generate pressure up to 1000 units at zero airflow. In practice, this means the fan can effectively operate in systems with high airflow resistance, overcoming these resistances to ensure proper performance.
`speedRated`	Nominal rotational speed	n_rated	rpm	hydrodynamic	1	0 – 10 000
Nominal Rotational Speed is the rated speed of the fan, expressed in revolutions per minute (RPM), defining the standard operating conditions of the device w… thout regulation. It is a key parameter for ensuring optimal efficiency and performance in ventilation systems. Established under laboratory conditions, it allows for the selection of a fan for the required airflow or pressure, although the actual operating speed may vary due to loads, operating conditions, or wear.
`velocityMax`	Maximum linear speed	v_max	m/s	hydrodynamic	0.01	0 – 100
Defines the highest permissible flow velocity of the medium (air/gas) within the system, often measured in m/s.HVAC Significance: In corrosion-resistant fans… the velocity limit is crucial to minimize mechanical erosion of the impeller blades or duct walls and to limit generated noise.Criteria: Exceeding this velocity can lead to an unjustified increase in dynamic pressure loss and cavitation in the case of liquids.Required Values: In industrial and specialized systems, velocities are maintained below critical thresholds to ensure safety and longevity.
`velocityMin`	Minimum linear speed	v_min	m/s	hydrodynamic	0.01	0 – 100
Defines the lowest permissible flow velocity of the medium (air/gas) within the system, often measured in m/s.HVAC Significance: In horizontal ducts, the min… mum linear velocity is critical to maintain the self-cleaning effect, preventing the settling of dust, solid contaminants, or moisture condensation.Criteria: Exceeding the lower limit can lead to excessive sedimentation of contaminants in the system, which reduces performance and increases the risk of corrosion.Required Values: In ventilation systems transporting contaminants (e.g., dust, fumes, chemicals), this velocity is often legally or normatively mandated to ensure process continuity and safety.
`volumeMax`	Maximum airflow	q_{v, max}	m³/h	hydrodynamic	1	0 – 1 000 000
Maximum airflow (Maximum Airflow Volume) is the highest amount of air that a fan can move within a specified time. Maximum airflow is the largest amount of air a fan can move within one hour under ideal conditions. It is a key performance indicator of the device, useful for assessing its air exchange capability. The measurement of maximum airflow is performed according to international standards such as ISO 5801 or AMCA 210, under standard atmospheric conditions. Maximum airflow is crucial when selecting fans, helping engineers and designers optimize ventilation systems to ensure adequate air exchange. Actual airflow may be less than the maximum due to flow resistance in the actual system, such as ductwork and filters. A fan with a maximum airflow of 5000 units can move this amount of air per hour under ideal conditions. In reality, actual performance may be lower depending on installation conditions and system configuration.
`bladeAngle`	Blade angle setting	α_blade	°	impeller	1	-180 – 180
The fan rotor blade angle (Polish: Kąt łopatek wirnika wentylatora) refers to the angle at which the blades are set relative to the axis of air flow. The blade angle is a key parameter influencing fan performance, airflow, pressure, noise, and energy efficiency. Significance of the rotor blade angle: Airflow: The blade angle directly influences the amount of air pushed through the fan. A larger angle can increase airflow, but may also increase resistance and energy consumption. Pressure: The blade angle affects the fan's ability to generate pressure. Larger blade angles can increase the pressure generated by the fan, which is important in applications requiring air to be moved through long ducts or against high resistance. Energy Efficiency: An optimal blade angle can reduce the fan's energy consumption, improving its efficiency. An angle that is too large can lead to inefficient operation and increased energy consumption. Noise: The blade angle influences the level of noise generated by the fan. A non-optimal angle can lead to increased noise and vibration, which may be undesirable in applications requiring quiet operation.
`bladeAngleMaxAllowed`	Maximum blade pitch angle for selection	β_max	°	impeller	0.5	-90 – 90
Highest blade pitch angle that may be used for selection. Curves above it are shown for information only.
`bladeAngleMinAllowed`	Minimum blade pitch angle	β_min	°	impeller	0.5	-90 – 90
Lowest blade pitch angle for which performance curves are shown and can be used.
`bladeMaterial`	Blade material	Mt_blade		impeller		Stainless-Steel, Carbon-Steel, Galvanized-Steel, Cast-Iron, Aluminum, Bronze, Brass, Titanium, Fiberglass-Composites, Carbon-Fiber +10 more Nylon, Polyamide, PP-Polypropylene, PE-Polyethylene, PVC-Polyvinyl-Chloride, POM-Polyoxymethylene, PC-Polycarbonate, ABS, Plastic-General, Other
The Fan Rotor Blade Material refers to the type of material used for producing the rotor blades, which affects the fan's performance, durability, corrosion r… sistance, and cost. Most commonly used materials for fan rotor blade production: Stainless Steel: Corrosion-resistant, durable, and strong. Used in demanding industrial environments and where hygiene is required, e.g., in the food industry. Aluminum: Lightweight, corrosion-resistant, and a good heat conductor. Used in applications requiring lightness and high performance, e.g., in automotive and electronics. Carbon Steel: Strong and durable, but susceptible to corrosion unless properly protected. Used in various industrial applications, often with an anti-corrosion coating. Polypropylene (PP): Lightweight, resistant to corrosion and chemicals. Used in domestic and some industrial fans. Polyamide (PA, Nylon): Strong and abrasion-resistant. Used in applications requiring high mechanical strength. Polycarbonate (PC): Transparent, resistant to impacts and high temperatures. Used in specialized applications. Fiberglass: Very strong and lightweight, resistant to corrosion and chemicals. Used in demanding environments, such as the chemical and marine industries. Carbon Composites: Exceptionally lightweight and strong. Used in high-performance applications, such as aviation.
`bladeNumber`	Number of impeller blades	N_blade	x	impeller	1	0 – 100
The Number of Fan Rotor Blades is one of the key structural parameters of a fan, which affects its performance, noise, air pressure, and energy efficiency. Influence of the number of rotor blades: Airflow: A greater number of blades increases the blade surface area, which can improve airflow, especially at lower rotational speeds. This is beneficial in applications requiring a large volume of air. A smaller number of blades may decrease airflow at a given rotational speed, but can be more efficient at higher speeds. Air Pressure: A greater number of blades typically generates higher air pressure, which is beneficial in ventilation and HVAC systems requiring air transport over long distances or through flow resistances such as filters. A smaller number of blades may generate lower pressure, which is suitable for applications requiring only air exchange without large flow resistances. Noise: A greater number of blades can lead to quieter operation, as more blades move smaller amounts of air, reducing turbulence and associated noise. A smaller number of blades may generate more noise, as fewer blades move larger amounts of air at once, increasing turbulence. Energy Efficiency: A greater number of blades can improve energy efficiency, particularly in applications requiring low rotational speeds, as more blades can move a larger volume of air with lower energy consumption. A smaller number of blades may be more energy efficient at higher rotational speeds, but may require more energy to achieve a similar airflow as a fan with a greater number of blades. Stability and Durability: A greater number of blades can improve rotor stability, as the forces acting on the rotor are more evenly distributed. A smaller number of blades can lead to greater forces acting on individual blades, which may shorten the rotor's lifespan.
`impellerBladeProfile`	Blade profile	Tp_{imp, blade}		impeller		Forward-Curved-Blades, Backward-Curved-Blades, Radial-Blades, Straight-Blades, Forward-Swept-Blades, Backward-Swept-Blades, Airfoil-Blades, Mixflow-Blades, Axial-Sickle-Blades, Axial-Airfoil-Blades +5 more Axial-Symmetrical-Blades, Axial-Twisted-Blades, Axial-Cambered-Blades, Axial-Paddle-Blades, Axial-Variable-Pitch-Blades
The blade profile influences capacity, noise, and efficiency. Profile types:Forward curved blades: High flow at low pressure and quiet operation. Application: HVAC systems.Backward curved blades: High efficiency and resistance to contamination. Application: industrial ventilation.Radial blades: Maximum mechanical strength. Application: pneumatic transport and dust extraction.Straight blades: Simple construction and lower efficiency. Application: basic axial fans.Forward swept blades: Reduced noise level and increased efficiency in axial systems.Backward swept blades: Better flow control and high performance in modern designs.Airfoil profile blades: Highest energy efficiency and minimal air resistance.Mixed flow blades: A hybrid combining features of axial and centrifugal impellers.Scythe-shaped blades: Exceptionally quiet operation and reduced turbulence. Application: condensers and coolers.Symmetrical blades: Identical parameters in both flow directions. Application: smoke extraction and tunnels.Twisted blades: Uniform pressure distribution and high aerodynamic efficiency.Sheet metal profiled blades: Economical solution with high mechanical durability.Variable pitch blades: Hub adjustment allowing for precise matching to system resistance.
`impellerConstruction`	Impeller design	C_imp		impeller		Welded-Blades-Rotor, Riveted-Blades-Rotor, Cast-Blades-Rotor, Stamped-Sheet-Metal-Rotor, Composite-Material-Rotor, Profiled-Blades-Rotor, Replaceable-Blades-Rotor, Monoblock-Rotor
Rotor construction determines its strength and aerodynamic efficiency. Typical solutions: Welded-Blades-Rotor: Highest mechanical strength, for heavy-duty operation.Riveted-Blades-Rotor: Simple and common in medium-power constructions.Cast-Blades-Rotor / Monoblock-Rotor: Cast as a single piece, guarantees precise balancing and stability at high speeds.Stamped-Sheet-Metal-Rotor: Low mass and cost of serial production, for lower pressure fans.Composite-Material-Rotor: Provides corrosion resistance and low self-weight.Replaceable-Blades-Rotor: Facilitates servicing and allows for adjustment of the angle of attack.
`impellerDiameter`	Impeller diameter	D_imp	mm	impeller	0.1	30 – 4 000
The Impeller Diameter refers to the straight-line distance measured from one edge of the impeller blade to the opposite edge through the center of the impeller. It is a crucial parameter affecting the performance and characteristics of the fan. Importance of impeller diameter: Airflow:Larger diameter: Increases the amount of air the fan can move, beneficial for applications requiring high airflows, such as cooling large spaces or machinery.Smaller diameter: Reduces the amount of airflow, but can provide higher air pressure, useful in applications requiring strong, concentrated airflow. Rotational speed:Larger diameter: Typically results in lower rotational speed for the same airflow performance, reducing noise and energy consumption.Smaller diameter: Requires higher rotational speed to achieve similar airflow, leading to higher noise levels and greater energy consumption. Energy efficiency:Larger diameter: Can lead to more efficient air movement, reducing energy consumption per unit of air moved.Smaller diameter: May be less energy efficient compared to fans with larger diameters. Example: A fan with a 500 mm impeller diameter will move more air at a lower rotational speed compared to a fan with a 250 mm impeller diameter, which will require a higher rotational speed to achieve similar airflow. Knowing the impeller diameter is crucial in designing and selecting ventilation systems to ensure appropriate performance and efficiency for the given application.
`impellerInertia`	Impeller moment of inertia	J_imp	kg·m²	impeller	0.001	0 – 100
Impeller Inertia refers to the measure of a fan impeller's resistance to changes in its rotational speed. The inertia of the impeller depends on its mass and its distribution relative to the axis of rotation. Importance of impeller inertia: Startup and Stopping:Higher inertia: The impeller requires more time and energy to reach the target rotational speed and to stop. This is beneficial in applications where stable operation at a constant speed is important.Lower inertia: The impeller responds more quickly to speed changes, which is advantageous in applications requiring frequent speed adjustments. Rotational Stability:Higher inertia: Helps maintain rotational speed stability as the impeller is less susceptible to temporary load changes.Lower inertia: May lead to greater sensitivity to load changes, affecting rotational speed stability. Energy Efficiency:Higher inertia: May increase energy consumption during startup and stopping, but can be more efficient during constant operation.Lower inertia: Can be more energy-efficient with frequent speed changes, but may require more energy to maintain stable speeds under varying loads.
`impellerInletDiameter`	Inner diameter of the impeller	D_{imp, inlet}	mm	impeller	0.1	30 – 4 000
The inner rotor diameter is a geometric parameter defining the distance between the inner edges of the blades or the supporting element (hub), measured perpe… dicularly to the axis of rotation. It is crucial for: Hub Sizing: Facilitates the selection of the appropriate hub and shaft.Calculating Flow Area: Influences the effective area through which air flows into the fan (especially in centrifugal and axial fans).Mechanical Stability: Defines the stiffness and rotating mass.
`impellerMaterial`	Impeller material	Mt_imp		impeller		Stainless-Steel, Carbon-Steel, Galvanized-Steel, Cast-Iron, Aluminum, Bronze, Brass, Titanium, Fiberglass-Composites, Carbon-Fiber +10 more Nylon, Polyamide, PP-Polypropylene, PE-Polyethylene, PVC-Polyvinyl-Chloride, POM-Polyoxymethylene, PC-Polycarbonate, ABS, Plastic-General, Other
Impeller Material refers to the type of material used in the manufacture of the impeller. The material of the impeller significantly affects its durability, performance, corrosion resistance, and production costs. Common materials used for manufacturing fan impellers: Stainless steel: Corrosion-resistant, durable, and strong. Used in demanding industrial environments and where hygiene is required, such as in the food industry. Aluminum: Lightweight, corrosion-resistant, and good heat conductor. Used in applications where light weight and high performance are required, such as in automotive and electronics. Carbon steel: Strong and durable but prone to corrosion unless properly protected. Used in various industrial applications, often with an anti-corrosion coating. Polypropylene (PP): Lightweight, corrosion-resistant, and chemical-resistant. Used in household and some industrial fans. Polyamide (PA, nylon): Strong and abrasion-resistant. Used in applications where high mechanical strength is required. Polycarbonate (PC): Transparent, impact-resistant, and high-temperature resistant. Used in specialized applications. Fiberglass: Very strong and lightweight, corrosion-resistant, and chemical-resistant. Used in demanding environments such as the chemical and marine industries. Carbon composites: Exceptionally lightweight and strong. Used in high-performance applications such as aerospace and motorsports.
`impellerSpeedMax`	Maximum impeller speed	n_{imp, max}	rpm	impeller	1	0 – 10 000
Maximum Rotational Speed refers to the highest speed at which a fan impeller can rotate without the risk of damage or loss of efficiency. This parameter is crucial for ensuring the safe and efficient operation of the fan. Importance of maximum rotational speed: Operational Efficiency: Higher rotational speeds allow the fan to move more air in a given time, which is essential in applications requiring intense airflow. Safety: Exceeding the maximum rotational speed can lead to mechanical damage, such as cracked impeller blades, excessive wear on bearings and other components, and even complete fan failure. Noise: Higher rotational speeds generate more noise, which can be problematic in environments requiring quiet operation, such as offices or residential areas. Durability: Operating at maximum speed for extended periods can shorten the fan's lifespan due to increased mechanical and thermal stress.
`impellerSpeedMin`	Minimum impeller speed	n_{imp, min}	rpm	impeller	1	0 – 10 000
Minimum Rotational Speed refers to the lowest speed at which a fan impeller can rotate while still effectively performing its air-moving function. This value is crucial for ensuring the minimum performance of the ventilation system, especially in applications requiring speed regulation. Importance of minimum rotational speed: Operational Efficiency: The minimum rotational speed ensures that the fan operates efficiently enough to move air, even at low airflow demands. Energy Savings: Adjusting the fan's rotational speed allows for reduced energy consumption when full capacity is not needed. This enables energy savings and lower operational costs. Noise Control: Lower rotational speeds can help reduce the noise level generated by the fan, which is important in applications requiring quiet operation. Equipment Longevity: Operating at lower rotational speeds can reduce mechanical wear on components, leading to a longer lifespan for the fan.
`impellerSurface`	Rotor Surface	S_imp		impeller		Painted, Polished, Anodized, Oxidized, Galvanized, Ceramic, Matte, Textured, Carburized, Coated
The rotor surface finish defines its protection against corrosion and erosion, and influences aerodynamics. Typical finishes: Painted: Basic anti-corrosion protection and aesthetics.Polished: Smooth surface minimizing aerodynamic drag and facilitating cleaning.Anodized: Chemical protection mainly for aluminum, increases surface hardness and wear resistance.Oxidized: Thin oxide layer providing basic rust protection, often for carbon steel.Galvanized: Thick zinc (or other) layer applied electrically, ensures high anti-corrosion protection in humid or aggressive environments.Ceramic: Coating resistant to very high temperatures and mechanical wear.Matte: Anti-reflective surface finish.Textured: Deliberately roughened surface, may influence boundary layer separation (turbulence effect).Carburized: Heat treatment increasing surface hardness, for extreme wear resistance.Coated: General term for a surface covered with an additional protective or functional layer (e.g., Teflon).
`impellerType`	Impeller type	Tp_imp		impeller		Axial-Rotor, Centrifugal-Rotor, Mixed-Flow-Rotor, Cross-Flow-Rotor, Diagonal-Rotor
Fan Rotor Type refers to the design of the rotor used in fans, which affects the airflow characteristics, efficiency, and application of the fan. Types of fan rotors: Axial Rotor:The rotor blades are arranged parallel to the axis of rotation, allowing air to flow along this axis.Ideal for applications requiring high airflow at low pressure, such as general ventilation, cooling, and air conditioning. Centrifugal Rotor:The rotor blades are arranged radially or at an angle to the axis of rotation, causing the air to be expelled outward, perpendicular to the axis of rotation.Used in applications requiring higher pressure, such as HVAC systems, dust extraction, and industrial ventilation systems. Mixed Flow Rotor:Combines features of axial and centrifugal rotors. The air flows at an angle to the axis of rotation, allowing for both high airflow and moderate pressure.Used in ventilation and air conditioning systems where a combination of high airflow and pressure is required. Crossflow Rotor:The air flows through the rotor in a direction perpendicular to the axis of rotation, allowing for even air distribution.Used in devices such as window air conditioners, fan heaters, and electronic cooling systems. Diagonal Rotor:The rotor blades are curved and arranged at an angle, allowing air to flow at an angle to the axis of rotation.Used where both high airflow and moderate pressure are needed, often in industrial and commercial applications.
`impellerVibrationFrequency`	Impeller natural frequency	f_{imp, vib}	Hz	impeller	0.01	0 – 1 000
The Natural Frequency of a Fan Impeller refers to the frequency at which the fan impeller naturally vibrates when excited. This is a critical parameter in the design and operation of the fan, as it can affect its performance, durability, and noise levels.Resonance: If the rotational speed of the impeller or the frequency of external exciting forces approaches the natural frequency, resonance can occur, leading to mechanical damage such as blade cracks and excessive bearing wear.Noise: Natural vibrations can generate noise, often heard as a characteristic "humming" sound.Durability: Regular occurrence of natural vibrations can lead to material fatigue and shorten the lifespan of fan components.Factors: Impeller mass, Impeller stiffness, Blade length and shape, Mounting and support.
`impellerWeight`	Impeller weight	m_imp	kg	impeller	0.1	0 – 100 000
Mass of the rotating impeller with hub and blades, without motor, ring and support structure.
`impellerWidth`	Impeller width	w_imp	mm	impeller	0.1	0 – 1 000
Fan Blade Width refers to the dimension of the fan blades measured from one edge to the opposite edge perpendicular to the axis of rotation. Blade width is a crucial parameter affecting fan performance, airflow, pressure, and noise. Importance of blade width: Airflow: Blade width affects the amount of air a fan can move. Wider blades can move larger volumes of air, increasing fan performance. Pressure: Wider blades can generate higher pressures, which is important in applications requiring air movement through long ducts or against high resistance. Increased blade width increases the surface area interacting with the air, helping to increase pressure. Energy efficiency: Optimal blade width can improve the energy efficiency of the fan by reducing pressure losses and flow resistance. Non-optimal blade width can lead to increased energy consumption and inefficient operation. Noise: Blade width affects the noise level generated by the fan. Wider blades can generate more turbulence, leading to increased noise.
`tipSpeedMax`	Maximum blade tip speed	u_max	m/s	impeller	0.1	0 – 200
Highest permitted peripheral speed of the blade tips. For a given diameter it limits the maximum impeller speed.
`areaInlet`	Inlet area	A_in	m²	size	0.0001	0 – 4
Fan Inlet Area refers to the size of the opening through which air enters the fan. The inlet area is crucial for ensuring adequate airflow performance, minimizing pressure losses, and optimizing the energy efficiency of the fan. Importance of fan inlet area: Airflow: A larger inlet area allows more air to be drawn in, which increases the fan's performance. An appropriate inlet area is essential for ensuring the required airflow capacity. Pressure Losses: The inlet area affects airflow resistance. Too small an area can increase resistance and pressure losses, reducing the fan's efficiency. Noise: A well-designed inlet area can reduce the noise generated by the fan. A larger inlet area reduces turbulence and associated noise. Energy Efficiency: An optimal inlet area reduces airflow resistance, leading to lower energy consumption by the fan. The inlet area should be tailored to the system's requirements to ensure efficient operation.
`areaOutlet`	Outlet area	A_out	m²	size	0.0001	0 – 4
Fan Outlet Area refers to the size of the opening through which air exits the fan. The outlet area is crucial for optimizing airflow, minimizing pressure losses, and increasing the energy efficiency of the fan. Importance of fan outlet area: Airflow: A larger outlet area allows more air to flow out, which can increase the fan's performance. An appropriate outlet area is essential for ensuring the required airflow capacity. Pressure Losses: The outlet area affects airflow resistance. Too small an area can increase resistance and pressure losses, reducing the fan's efficiency. Noise: A well-designed outlet area can reduce the noise generated by the fan. A larger outlet area reduces turbulence and associated noise. Energy Efficiency: An optimal outlet area reduces airflow resistance, leading to lower energy consumption by the fan. The outlet area should be tailored to the system's requirements to ensure efficient operation.
`blindTubes`	Blind tubes	N_blind		size	1	0 – 100
`circuitCount`	Number of circuits	N_circuit		size	1	1 – 10
`collectorDiameter`	Collector diameter	D_collector		size	0.1	0 – 500
`depth`	Depth	d	mm	size	1	0 – 10 000
Fan Depth refers to one of the physical dimensions of the fan, measured from the front edge of the inlet to the rear edge of the outlet, parallel to the roto… axis. The depth of the fan affects its installation in the ventilation system. The fan must be properly fitted to the available installation space to ensure proper operation and ease of maintenance.
`diameter`	Diameter	D	mm	size	1	0 – 2 000
Diameter refers to the straight-line distance from one edge of the fan impeller to the opposite edge, passing through its center. This parameter is crucial for determining the fan's performance and operating characteristics. Importance of the fan impeller diameter: Airflow: A larger impeller diameter increases the amount of air the fan can move. This is particularly important in applications requiring large airflows, such as HVAC systems, industrial cooling, and building ventilation. Air pressure: The diameter of the impeller affects the fan's ability to generate pressure. Fans with larger diameters can produce higher pressure at the same rotational speed, which is beneficial in systems requiring air transport over long distances or through flow resistances like filters. Energy efficiency: Larger impellers can move more air at lower rotational speeds, reducing energy consumption. Therefore, systems with larger impellers can be more energy-efficient. Noise level: Fans with larger diameters can operate at lower rotational speeds, often resulting in lower noise generation compared to smaller diameter fans operating at high speeds.
`diameterCalculating`	Equivalent diameter	D_calc	mm	size	1	0 – 2 000
Equivalent (calculation) diameter in HVAC systems.Definition: It is a calculated diameter that replaces a rectangular or other irregularly shaped duct in pre… sure loss calculations (flow resistance) to maintain the same resistance value as a circular duct.Formula: Typically calculated based on the cross-sectional area and perimeter of the duct (a formula is often used that equates the friction coefficient).Significance: Allows engineers to use the same tables or calculation software for all duct shapes, simplifying ventilation design and sizing.
`diameterInlet`	Inlet diameter	D_in	mm	size	1	0 – 2 000
Inlet Diameter refers to the straight-line distance from one edge of the fan inlet to the opposite edge, passing through its center. This parameter is crucial for determining the performance, airflow, and efficiency of the fan. Importance of the fan inlet diameter: Airflow: The inlet diameter directly affects the amount of air the fan can intake. A larger inlet diameter allows for the intake of larger volumes of air, which is important in applications requiring high airflow. Flow resistance: A smaller inlet diameter can increase flow resistance, leading to reduced fan performance. A larger inlet diameter reduces resistance, allowing for more efficient air intake. Energy efficiency: Fans with appropriately sized inlets can operate more efficiently, consuming less energy to move air. Reducing flow resistance through an optimal inlet diameter leads to lower energy consumption. Noise: The size of the inlet can affect noise generation. A too small inlet can cause turbulence and increase noise. A larger inlet diameter helps in smoother airflow, which can reduce noise levels.
`diameterOutlet`	Outlet diameter	D_out	mm	size	1	0 – 2 000
Outlet Diameter refers to the straight-line distance from one edge of the fan outlet to the opposite edge, passing through its center. This parameter is crucial for determining the fan's performance, air pressure, and efficiency. Importance of the fan outlet diameter: Airflow: The outlet diameter directly affects the amount of air the fan can blow out. A larger outlet diameter allows for blowing out larger volumes of air, which is important in applications requiring high airflow. Air pressure: A smaller outlet diameter can increase air pressure, which is beneficial in systems requiring higher pressure, such as in ventilation ducts with high resistance. A larger outlet diameter can reduce pressure but increase airflow. Energy efficiency: Fans with appropriately sized outlets can operate more efficiently, consuming less energy to move air. An optimal outlet diameter reduces flow resistance and leads to lower energy consumption. Noise: The size of the outlet can affect noise generation. A too small outlet can cause increased turbulence and noise. A larger outlet diameter helps in smoother airflow, which can reduce noise levels.
`finDepth`	Fin depth	D_fin	mm	size	0.1	0 – 1 000
`finLength`	Fin length	L_fin	mm	size	0.1	0 – 3 000
`finSpacing`	Fin spacing	p_fin	mm	size	0.01	0 – 10
`finThickness`	Fin thickness	t_fin	mm	size	0.01	0 – 1
`finWidth`	Fin width	W_fin	mm	size	0.1	0 – 2 000
`height`	Height	h	mm	size	1	0 – 10 000
Fan Height refers to one of the physical dimensions of the fan, measured from the base to the top edge, parallel to the airflow axis. The height of the fan affects its installation and integration with the ventilation system. The fan must be properly fitted to the available installation space in the given system.
`length`	Length	l	mm	size	1	0 – 10 000
Fan Length refers to one of the physical dimensions of the fan, measured from one edge of the casing to the opposite edge along the axial direction, that is,… along the rotor axis. The length of the fan affects its installation and integration with the ventilation system. The fan must be properly fitted to the available installation space in the given system.
`profile`	Profile	P	mmxmm	size
Fan profile refers to the cross-sectional dimensions of rectangular ventilation ducts through which the fan moves air. Properly selected dimensions ensure efficient airflow, minimize pressure losses, reduce noise, and increase the energy efficiency of the system. Width and Height: These two dimensions define the cross-section of the ventilation duct. Importance of rectangular ventilation duct dimensions: Airflow efficiency: Ducts with appropriate dimensions ensure even and smooth airflow. Ducts that are too small can lead to blockages and increased resistance, while ducts that are too large can be inefficient and difficult to install. Pressure losses: Optimal dimensions minimize pressure losses in the system. Longer and narrower ducts have higher pressure losses, so it is important to select duct dimensions to minimize flow resistance. Noise: Ducts with appropriate dimensions can reduce generated noise. Ducts that are too small can lead to increased turbulence and noise, while larger ducts allow for smoother airflow. Energy efficiency: Ducts with appropriate dimensions reduce energy consumption by fans, as flow resistance losses are minimized.
`profileInlet`	Inlet profile	AxB_in	mmxmm	size
Inlet Profile refers to the dimensions of the inlet opening through which air enters the fan. The inlet dimensions are crucial for optimizing airflow performance, minimizing pressure losses, reducing noise, and increasing the fan's energy efficiency. Importance of the fan inlet profile dimensions: Airflow: Larger inlet dimensions allow for greater air intake, which increases fan performance. However, an inlet that is too large can lead to pressure losses if not properly designed. Pressure losses: Properly sized inlets minimize pressure losses, increasing system efficiency. A too small inlet can cause blockages and increased flow resistance. Noise: The inlet size must be adjusted to minimize vibrations and noise generated by the airflow. Energy efficiency: Optimal inlet size reduces flow resistance, leading to lower energy consumption by the fan. Inlets that are too large or too small can lead to inefficient system operation.
`profileOutlet`	Outlet profile	AxB_out	mmxmm	size
Fan Outlet Profile refers to the dimensions of the outlet through which air exits the fan. The outlet profile is crucial for optimizing airflow performance, minimizing pressure losses, reducing noise, and increasing the energy efficiency of the fan. Importance of fan outlet profile: Airflow: Larger outlet dimensions allow more air to be pushed through, increasing the fan's performance. However, an outlet that is too large can lead to pressure losses if not properly designed. Pressure Losses: An appropriately sized outlet minimizes pressure losses, increasing system efficiency. A too small outlet can cause blockages and increased flow resistance. Noise: The outlet size must be adjusted to minimize vibrations and noise generated by the airflow. Energy Efficiency: An optimal outlet size reduces flow resistance, leading to lower energy consumption by the fan. Too large or too small outlets can lead to inefficient system operation.
`rowCount`	Number of rows	N_row		size	1	1 – 50
`tubeDiameter`	Tube diameter	D_tube		size		1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8" +19 more 1-1/2", 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 15mm, 18mm, 20mm, 22mm, 25mm, 28mm, 30mm, 35mm, 40mm
`tubesPerRow`	Tubes per row	N_tube,row		size	1	1 – 100
`tubeThickness`	Tube thickness	t_tube	mm	size	0.01	0 – 10
`weight`	Weight	m	kg	size	0.01	0 – 10 000
Fan Weight refers to the total weight of the device, including all its components such as the casing, rotor, motor, and other structural elements. Fan weight is an important parameter that affects the installation, performance, and stability of the ventilation system. Importance of Fan Weight: Installation: Fan weight affects the ease of installation and removal. Lighter fans are generally easier to install, which can be beneficial in areas with limited access or in applications requiring frequent inspections and maintenance. Stability and durability: Fan weight impacts its stability during operation. Heavier fans may be more stable and less prone to vibrations but may require stronger support structures. Transport and logistics: The weight of the device affects transportation costs and ease. Lighter fans are easier and cheaper to transport, which can be significant for large industrial installations. Energy efficiency: Fan weight does not directly impact its energy efficiency but can influence the method of installation and operation, indirectly affecting the overall efficiency of the system.
`width`	Width	w	mm	size	1	0 – 10 000
Fan Width refers to one of the physical dimensions of the fan, measured from one edge to the opposite edge, parallel to the airflow axis. The width of the fan affects its installation and integration with the ventilation system. The fan must be properly fitted to the available installation space in the given system.
`frequencyMaxAllowed`	Maximum Allowable Frequency	f_{max, allow}	Hz	regulation	0.1	0 – 1 000
Maximum Allowable Frequency refers to the highest supply frequency at which a device, such as a fan motor, can safely and reliably operate. Exceeding this frequency can lead to excessive load, overheating, excessive vibrations, and accelerated component wear. Importance of Maximum Allowable Frequency: Operational Safety: Exceeding the maximum allowable frequency can cause excessive vibrations and motor overheating, increasing the risk of damage and failure. Operating within this frequency range ensures safe operation of the device. Efficiency: Devices operating near the rated frequency achieve optimal performance. Operating at too high a frequency can lead to inefficient operation and increased energy consumption. Durability and Reliability: Operating within the maximum allowable frequency reduces the risk of mechanical and thermal damage, extending the device's lifespan and minimizing maintenance costs. Rotational Speed: Increasing the supply frequency increases the motor's rotational speed. Excessive speed can exceed the mechanical capabilities of the fan rotor and other components, leading to accelerated wear or failure.
`frequencyMinAllowed`	Minimum allowable frequency	f_{min, allow}	Hz	regulation	0.1	0 – 1 000
Minimum Allowable Frequency refers to the lowest supply frequency at which a device, such as a fan motor, can safely and reliably operate. Operating below this frequency can lead to inefficient operation, motor overheating, reduced torque, and increased risk of damage. Importance of Minimum Allowable Frequency: Operational Safety: Operating below the minimum allowable frequency can cause inefficient motor performance, leading to overheating, increased component wear, and risk of damage. Efficiency: Devices operating at too low a frequency can perform inefficiently, resulting in reduced performance and increased energy consumption. Operating within the minimum allowable frequency ensures optimal fan efficiency. Torque: Too low a supply frequency can lead to a drop in torque, which may prevent the fan from operating correctly, especially under heavier loads. Durability and Reliability: Operating at the appropriate frequency reduces the risk of mechanical and thermal damage, extending the device's lifespan and minimizing maintenance costs.
`regulationType`	Control type	T_reg		regulation		none, inverter, EC, voltage, rotation, step, angle
`speedRange`		n_{draft, range}	rpm	regulation	1	0 – 10 000
`speedSteps`	Speed steps	n_steps		regulation	1	1, 1/2, 1/2/3
Speed stages define the number of available levels for fan power control. 1: Means one constant operating speed for the fan. 1/2: Two operating speeds, allowing a choice between low and high speed. 1/2/3: Three operating speeds (low, medium, and high) for greater flexibility in capacity control.
`VECMaxAllowed`		U_{EC, max}	V	regulation	0.01	0 – 10
`VECMinAllowed`		U_{EC, min}	V	regulation	0.01	0 – 10
`voltageMaxAllowed`	Maximum Allowable Voltage	U_{max, allow}	V	regulation	1	0 – 1 000
Maximum Allowable Voltage refers to the highest electrical voltage at which a device, such as a fan motor, can safely and reliably operate. Exceeding this voltage can lead to equipment damage, overheating, insulation failure, and increased fire risk. Importance of Maximum Allowable Voltage: Operational Safety: Exceeding the maximum allowable voltage can cause overheating, insulation damage, and increased fire risk. Ensuring that the device operates within the maximum allowable voltage range is crucial for operational safety. Durability and Reliability: Operating within the maximum allowable voltage limits reduces the risk of mechanical and thermal damage, extending the device's lifespan and minimizing maintenance costs. Efficiency: Devices operating at voltages close to their rated voltage achieve optimal performance. Operating at excessively high voltages can lead to inefficient operation and increased energy consumption.
`voltageMinAllowed`	Minimum Allowable Voltage	U_{min, allow}	V	regulation	1	0 – 230
Minimum Allowable Voltage refers to the lowest voltage at which a device, such as a fan motor, can safely and reliably operate. Operating below this voltage can lead to inefficient operation, motor overheating, reduced torque, and increased risk of damage. Importance of Minimum Allowable Voltage: Operational Safety: Operating below the minimum allowable voltage can lead to motor overheating, reduced lifespan, and damage to other components. Ensuring proper supply voltage is crucial for safe operation of the device. Efficiency: Devices operating at too low a voltage can perform inefficiently, leading to reduced performance and increased energy consumption. Operating within the minimum allowable voltage range ensures optimal fan efficiency. Torque: Too low a supply voltage can lead to a drop in torque, which may prevent the fan from operating correctly, especially under higher loads. Durability and Reliability: Operating at the proper voltage reduces the risk of mechanical and thermal damage, extending the device's lifespan and minimizing maintenance costs.
`voltageRange`	Voltage range	U_range	V	regulation	1	0 – 1 000
`volumeMaxAllowed`	Maximum Allowable Capacity	Q_{max, allow}	m³/h	regulation	1	0 – 1 000 000
Maximum Allowable Airflow refers to the highest amount of air a fan can move under specified operating conditions without exceeding its design limitations. It is expressed in units of volume per unit time, such as m³/h or CFM. Importance of Maximum Allowable Airflow: Operational Safety: Exceeding the maximum allowable airflow can lead to damage to fan components, such as blades, motor, or bearings. The maximum allowable airflow defines the safe operating limit of the device. System Efficiency: Operating within the maximum allowable airflow range ensures optimal performance and energy efficiency of the ventilation system. Exceeding this value can result in decreased efficiency and increased energy consumption. Device Longevity: Keeping the fan operating within the maximum allowable airflow limits contributes to the longer lifespan of the device by reducing the risk of overloading and mechanical wear.
`volumeMinAllowed`	Minimum Allowable Capacity	Q_{min, allow}	m³/h	regulation	1	0 – 100 000
Minimum Allowable Airflow refers to the lowest amount of air a fan can move under specified operating conditions without the risk of damage or inefficient op… ration. This is a key parameter affecting the performance, safety, and durability of the ventilation system. Importance of Minimum Allowable Airflow: Operational Safety: Operating below the minimum allowable airflow can lead to motor overheating, damage to fan components, or reduced lifespan. Ensuring minimum airflow is critical for the safe operation of the system. Efficiency: Devices operating with too low airflow may work inefficiently, leading to increased energy consumption and reduced system performance. Operating within the minimum allowable airflow range ensures optimal fan efficiency. Durability and Reliability: Operating at the appropriate minimum airflow reduces the risk of mechanical and thermal damage, extending the fan's lifespan and minimizing maintenance costs. Operational Stability: Maintaining the minimum airflow prevents unstable operating conditions, such as flow pulsations, which can negatively impact the entire ventilation system.
`Ldamp_1000`	Sound attenuation in the 1000 Hz band	L_{damp, 1000}	dB	acoustic	0.1	0 – 50
`Ldamp_125`	Sound attenuation in the 125 Hz band	L_{damp, 125}	dB	acoustic	0.1	0 – 50
`Ldamp_2000`	Sound attenuation in the 2000 Hz band	L_{damp, 2000}	dB	acoustic	0.1	0 – 50
`Ldamp_250`	Sound attenuation in the 250 Hz band	L_{damp, 250}	dB	acoustic	0.1	0 – 50
`Ldamp_4000`	Sound attenuation in the 4000 Hz band	L_{damp, 4000}	dB	acoustic	0.1	0 – 50
`Ldamp_500`	Sound attenuation in the 500 Hz band	L_{damp, 500}	dB	acoustic	0.1	0 – 50
`Ldamp_63`	Sound attenuation in the 63 Hz band	L_{damp, 63}	dB	acoustic	0.1	0 – 50
`Ldamp_8000`	Sound attenuation in the 8000 Hz band	L_{damp, 8000}	dB	acoustic	0.1	0 – 50
`Lpa`	Sound pressure level	L_pa	dB(A)	acoustic	0.1	0 – 120
Sound Pressure Level (SPL) is a measure of the intensity of sound at a specific point in space, expressed in decibels (dB). It is a crucial parameter used to assess the noise generated by sound sources, such as fans, in real working conditions. Importance of Sound Pressure Level: Acoustic Comfort: Sound Pressure Level measures the noise in areas where people are present, affecting their comfort. Understanding the SPL is essential for ensuring appropriate acoustic conditions in residential, office, and public buildings. Health and Safety: Exceeding permissible sound pressure levels can lead to health issues such as hearing loss and stress. Therefore, it is important to monitor and control noise in workplaces and living areas. Compliance with Standards: Many regulations and standards specify the maximum allowable sound pressure levels in various environments. Adhering to these standards is crucial for legal compliance. Sound Pressure Level is measured using microphones and sound analyzers. Measurements are often conducted in accordance with international standards, such as ISO 1996, to ensure consistency and accuracy of results.
`Lpa2`	Sound pressure level emitted from the casing	L_{pa, 2}	dB(A)	acoustic	0.1	0 – 120
The Sound Pressure Level Emitted from the Enclosure refers to the amount of sound that escapes from the device's enclosure and is measured at a specific dist… nce from the device. Importance of Sound Pressure Level Emitted from the Enclosure: Acoustic Comfort: Noise emitted by the device's enclosure can affect the acoustic comfort of users, especially in workplaces, residences, and public spaces. High noise levels can degrade the quality of the acoustic environment. Health and Safety: Prolonged exposure to high noise levels can lead to health issues such as hearing loss, stress, and other noise-related ailments. Compliance with Standards: There are regulations and standards regarding the maximum allowable noise levels emitted by devices. Adhering to these standards is crucial for legal compliance. The sound pressure level is measured using microphones placed at specific points around the device's enclosure, in accordance with international standards such as ISO 3744 or ISO 3746.
`Lpa5`	Sound pressure level at the inlet	L_{pa, 5}	dB(A)	acoustic	0.1	0 – 120
The Inlet Sound Pressure Level (SPL) refers to the amount of sound generated by a device that is measured near the inlet of the device. This is an important parameter affecting acoustic comfort and compliance with noise regulations in ventilation and HVAC systems. Importance of Inlet Sound Pressure Level: Acoustic Comfort: Noise generated at the fan inlet can affect user comfort, especially in workplaces, residences, and public spaces. High noise levels can degrade the acoustic environment quality. Health and Safety: Prolonged exposure to high noise levels at the fan inlet can lead to health issues such as hearing loss, stress, and other noise-related ailments. Compliance with Standards: There are regulations and standards regarding the maximum allowable noise levels emitted by ventilation devices. Adhering to these standards is crucial for legal compliance. The Inlet Sound Pressure Level is measured using microphones placed near the fan inlet according to international standards, such as ISO 5136.
`Lpa6`	Sound pressure level at the outlet	L_{pa, 6}	dB(A)	acoustic	0.1	0 – 120
The Outlet Sound Pressure Level (SPL) refers to the amount of sound generated by a device that is measured near the outlet of the device. This is an important parameter affecting acoustic comfort and compliance with noise regulations in ventilation and HVAC systems. Importance of Outlet Sound Pressure Level: Acoustic Comfort: Noise generated at the fan outlet can affect user comfort, especially in workplaces, residences, and public spaces. High noise levels can degrade the acoustic environment quality. Health and Safety: Prolonged exposure to high noise levels at the fan outlet can lead to health issues such as hearing loss, stress, and other noise-related ailments. Compliance with Standards: There are regulations and standards regarding the maximum allowable noise levels emitted by ventilation devices. Adhering to these standards is crucial for legal compliance. The Outlet Sound Pressure Level is measured using microphones placed near the fan outlet according to international standards, such as ISO 5136.
`LpaDistance`	Sound pressure level measurement distance	L_{pa, dist}	m	acoustic	0.01	0 – 10
The measurement distance for Sound Pressure Level (SPL) is crucial in assessing the noise generated by fans and other equipment. The standard measurement distance is 1 meter (m). This is the most commonly used distance for measuring the sound pressure level of fans, according to international standards such as ISO 5136. Importance: Consistency and Accuracy: Using the standard 1-meter distance ensures consistent results and allows comparisons between different devices and manufacturers. Standards and Regulations: Adhering to established measurement distances is required to meet noise regulations and standards. Acoustic Comfort: Measuring the sound pressure level at the standard distance helps assess the noise impact on users and the environment, which is crucial for designing quiet and comfortable ventilation systems.
`LpaQ`	Sound directivity factor	L_{pa, Q}		acoustic	1	1, 2, 4, 8
The sound directivity factor (Q) is a dimensionless acoustic parameter describing how sound energy emitted by a source (e.g., fan outlet or duct) is distribu… ed in space.Definition: It is the ratio of the sound intensity in a specific direction to the intensity that would be produced by the same source if it radiated energy uniformly in all directions (a point source).HVAC Significance: It allows engineers to accurately determine the noise level at the reception point. High Q values (e.g., Q=8 for a corner) mean the sound is concentrated, requiring the use of more effective attenuators in that direction.Conditions: In ventilation systems, Q is usually dependent on the frequency and the geometry of the outlet (e.g., free discharge into a room vs. discharge near a wall/corner).
`LpaSabine`	Equivalent sound absorption area	L_{pa, sabine}	m²	acoustic
The Equivalent Sound Absorption Area (A) is a measure of the total ability of a room or environment to absorb acoustic energy, measured in square meters [m²]… Definition: It is the calculated surface area of a hypothetical, perfectly absorbing material that would absorb the same amount of acoustic energy as all materials, objects, and air within the actual room.HVAC Significance: Parameter A is crucial in reverberation time calculations and in determining the sound pressure level (Lp) in a room based on the acoustic power (Lw) emitted by the fan.Formula: It is calculated using the sum of the products of the area of each surface (walls, floor, ceiling) and its sound absorption coefficient (α), A = Σ (S * α).
`Lwa`	Sound power level	L_wa	dB(A)	acoustic	0.1	0 – 120
Sound Power Level (Lw) is a measure of the total sound energy emitted by a noise source, such as a fan, regardless of the environment in which it operates. It is a fundamental parameter used to assess and compare the noise generated by different devices. Importance of Sound Power Level: Acoustic Comfort: Knowing the sound power level of a device allows for assessing its impact on the acoustic environment in workplaces, residential buildings, and public spaces. Compliance with Standards: Sound power level is often used to check compliance with noise regulations and standards, which is crucial for meeting legal requirements. Sound power level is measured in laboratory conditions according to international standards such as ISO 3744, ISO 3745, or ISO 9614. Results are given in decibels (dB).
`Lwa2`	Sound power level emitted from the casing	L_{wa, 2}	dB(A)	acoustic	0.1	0 – 120
The Sound Power Level Emitted from the Enclosure refers to the amount of sound generated by the device's enclosure in all directions, regardless of the surro… nding conditions, expressed in decibels. Importance of the Sound Power Level Emitted from the Enclosure: Acoustic Comfort: High sound power levels emitted from the enclosure can be a source of unpleasant noise, affecting user comfort in workplaces, residences, and public spaces. Health and Safety: Prolonged exposure to high noise levels can lead to health issues such as hearing loss, stress, and other noise-related ailments. Compliance with Standards: Regulations and standards concerning the maximum allowable noise levels emitted by devices require adherence to specific values to ensure legal compliance. The sound power level is typically measured under laboratory conditions in accordance with international standards such as ISO 3744 or ISO 3746.
`Lwa5`	Sound power level at the inlet	L_{wa, 5}	dB(A)	acoustic	0.1	0 – 120
The Inlet Sound Power Level refers to the amount of sound generated by the device at its inlet, regardless of the surrounding conditions. This is a key parameter affecting acoustic comfort and compliance with noise regulations, particularly in ventilation and HVAC systems. Importance of the Inlet Sound Power Level: Acoustic Comfort: High inlet sound power levels can be a source of unpleasant noise, affecting user comfort in workplaces, residences, and public spaces. Health and Safety: Prolonged exposure to high noise levels can lead to health issues such as hearing loss, stress, and other noise-related ailments. Compliance with Standards: Regulations and standards concerning the maximum allowable noise levels emitted by devices require adherence to specific values to ensure legal compliance. The inlet sound power level is typically measured under laboratory conditions in accordance with international standards such as ISO 5136.
`Lwa6`	Sound power level at the outlet	L_{wa, 6}	dB(A)	acoustic	0.1	0 – 120
The Outlet Sound Power Level refers to the amount of sound generated by the fan on the discharge (outlet) side, regardless of the surrounding conditions. This is a key parameter affecting acoustic comfort and compliance with noise regulations in ventilation and HVAC systems. Importance of the Outlet Sound Power Level: Acoustic Comfort: Noise generated on the discharge side of the fan can affect user comfort, particularly in workplaces, residences, and public spaces. High noise levels can degrade the quality of the acoustic environment. Health and Safety: Prolonged exposure to high noise levels at the fan outlet can lead to health issues such as hearing loss, stress, and other noise-related ailments. Compliance with Standards: Regulations and standards concerning the maximum allowable noise levels emitted by ventilation devices require adherence to specific values to ensure legal compliance. The outlet sound power level is measured under laboratory conditions in accordance with international standards such as ISO 5136.
`beltMaterial`	Belt material	Mt_belt		drive		Rubber, Nylon, Polyester, Leather, Cotton, PVC-Polyvinyl-Chloride, PE-Polyethylene, PP-Polypropylene, PU-Polyurethane, Neoprene +6 more Kevlar, EPDM-Ethylene-Propylene-Diene-Monomer, Silicone, Fiberglass, Steel, Other
In industrial machinery for the production of transmission belts, various materials are used, depending on the type of transmission and the specific requirem… nts of the application.V-BeltsRubber, both natural and synthetic, is commonly used in V-belts. Natural rubber is elastic and resistant to abrasion, but has limited resistance to oils and chemicals. Synthetic rubber, such as neoprene, offers better resistance to oils, chemicals, and extreme temperatures. To increase tensile strength and abrasion resistance, aramid fibers are often used in V-belts, allowing them to handle higher loads and provide longer durability in intensive conditions.Timing BeltsPolyurethanes are widely used in timing belts because they offer excellent resistance to oils, chemicals, and high temperatures. Polyurethane timing belts are ideal for precise applications where accurate power transmission is required. Aramid fibers are also used in timing belts to increase their tensile strength and dimensional stability, which is crucial for maintaining precise contact with gear teeth.Flat BeltsRubber, both natural and synthetic, is often used in flat belts. Rubber provides good elasticity and grip. Synthetic rubber may be preferred due to better resistance to chemicals and temperature. Polyurethanes are used in flat belts to provide additional resistance to abrasion and chemical action, which is beneficial in tough industrial conditions.High-Strength Belts (e.g., reinforced belts)Reinforced belts, which are designed to handle high loads, often contain steel reinforcements. Steel increases the durability of the belts and their resistance to stretching, which is essential for applications requiring high force and wear resistance.The choice of material for the production of transmission belts depends on several key factors, such as load, speed, temperature, and the presence of chemicals. Selecting the right material is crucial for the performance and durability of the transmission in various industrial applications.
`beltPulleyDiameterIn`	Input pulley diameter	D_{pulley, in}	mm	drive	1	30 – 1 000
The Pulley Input Diameter refers to the diameter of the pulley mounted on the motor shaft that drives the belt in the fan drive system. It is a key parameter affecting rotational speed, torque, and the overall efficiency of the drive system. Importance of Pulley Input Diameter: Rotational Speed: The pulley input diameter affects the rotational speed of the output pulley (mounted on the fan impeller shaft). Changing the input pulley diameter can alter the fan's rotational speed according to the belt drive principle. Torque: A larger input pulley diameter decreases rotational speed but increases torque on the output pulley. Proper selection of pulley diameter can help match the torque requirements of the fan. Energy Efficiency: The optimal pulley input diameter minimizes energy losses and ensures efficient power transmission from the motor to the fan impeller. Durability and Reliability: The appropriate pulley diameter helps reduce wear on the drive belt and bearings, enhancing the durability and reliability of the entire system.
`beltPulleyDiameterOut`	Output pulley diameter	D_{pulley, out}	mm	drive	1	30 – 1 000
The Output Pulley Diameter refers to the diameter of the pulley mounted on the fan impeller shaft, which is driven by the belt from the input pulley mounted … n the motor shaft. It is a key parameter affecting the rotational speed of the impeller, torque, and the overall efficiency of the drive system. Importance of Output Pulley Diameter: Rotational Speed: The output pulley diameter affects the rotational speed of the fan impeller. A larger output pulley diameter reduces the rotational speed, while a smaller diameter increases the impeller's rotational speed. Torque: A larger output pulley diameter increases the torque on the fan impeller, which is important in applications requiring high torque at low speeds. Energy Efficiency: The optimal output pulley diameter minimizes energy losses and ensures efficient power transmission from the motor to the fan impeller. Durability and Reliability: The appropriate pulley diameter helps reduce wear on the drive belt and bearings, enhancing the durability and reliability of the entire system.
`beltRatio`	Belt drive ratio	R_belt	x	drive	0.001	0 – 10
The Belt Drive Ratio refers to the ratio of the rotational speed of the input pulley (on the motor) to the rotational speed of the output pulley (on the fan … mpeller). It is a key parameter affecting the rotational speed, torque, and overall efficiency of the drive system. Importance of Belt Drive Ratio: Rotational Speed: The belt drive ratio directly affects the rotational speed of the fan impeller. Increasing the ratio (larger difference in pulley diameters) decreases the impeller's rotational speed, while decreasing the ratio (smaller difference in diameters) increases the rotational speed. Torque: The ratio also affects the torque transferred to the fan impeller. A higher ratio increases the torque on the output pulley, which is beneficial in applications requiring high torque at low speeds. Energy Efficiency: The optimal ratio minimizes energy losses and ensures efficient power transmission from the motor to the fan impeller. An improper ratio can lead to increased energy consumption and reduced efficiency. Durability and Reliability: The appropriate ratio helps reduce wear on the drive belt and bearings, increasing the durability and reliability of the entire system.
`beltRequidedTension`	Required belt tension force	T_{belt, req}	N	drive	0.1	0 – 500
The required belt tension in a belt drive (ang. Required Belt Tension) is the force with which the belt must be tensioned to ensure proper power transmission from the motor to the fan impeller. Correct belt tension is crucial for the efficient and reliable operation of the drive system. The significance of belt tension: Power Transmission: Proper belt tension ensures effective power transmission from the motor to the impeller, minimizing belt slippage on the pulleys. Belt and Pulley Life: Too low tension leads to slippage, increasing wear on the belt and pulleys. Too high tension can cause excessive load on the bearings and other components, shortening their lifespan. Energy Efficiency: Properly tensioned belts minimize energy losses due to slippage and friction, improving the overall energy efficiency of the system. Noise and Vibration: Proper belt tension reduces vibrations and noise generated by the drive system, which is important for user comfort and system durability.
`beltType`	Types of belt drive	Tp_belt		drive		Flat-Belts, V-Belts, Timing-Belts, Round-Belts, Multi-V-Belts, Variable-Speed-Belts, Ribbed-Belts, Toothed-Belts, Cogged-Belts, Poly-V-Belts +8 more Double-V-Belts, Synchronous-Belts, Hex-Belts, Link-Belts, Wedge-Belts, Friction-Drive-Belts, Serpentine-Belts, Other
Choosing the right type of belt affects the performance, durability, energy efficiency, and stability of the entire drive system. Main types of belts used in belt drives: V-Belts: Transmit power through a v-shaped profile, increasing contact area between the belt and pulley. These belts are popular due to their efficiency, durability, and ability to handle high loads with minimal slippage. Poly-V Belts: Also known as micro-V belts, they have multiple parallel ribs that increase contact area and allow for greater load transfer at lower tension. Poly-V belts offer more flexibility and less noise compared to V-belts. Timing Belts: Transmit power through teeth that mesh with grooves in the pulleys, eliminating slippage. Timing belts provide precise power transmission and synchronization of movement between the driving and driven shafts. They are used where high precision and no slippage are required, such as in synchronization systems. Flat Belts: Transmit power through friction between the flat surface of the belt and the pulley. They are used in systems with lower loads and require higher tension to prevent slippage. Flat belts are quiet in operation and easy to install. Round Belts: Transmit power through a round cross-section belt, mainly used in light applications. They are flexible and easy to install but have lower load-carrying capacity compared to other types of belts. Multi-V Belts: Have several parallel grooves that provide better grip on pulleys and are used where higher power transmission is required at lower tension. Variable-Speed Belts: Designed for applications where speed change is required. They are used in tools and machines where rotational speed needs to be adjusted. Ribbed Belts: Have a ribbed surface that provides better contact and increases power transmission capability. Often used in alternator drives and other automotive systems. Toothed Belts: Similar to timing belts but often have more pronounced teeth capable of handling higher loads. Cogged Belts: A combination of V-belts and toothed belts, offering better flexibility and performance. Advanced Poly-V Belts: A more advanced form of V-belts offering greater contact area and power transmission capability. Double-V Belts: Have two rows of v-shapes, increasing their power transmission capacity and stability. Synchronous Belts: Provide precise power transmission and movement synchronization, crucial in precision applications. Hex Belts: Have a hexagonal cross-section, providing better grip and stability in demanding applications. Link Belts: Consist of modules that can be easily replaced and adapted to different applications. Wedge Belts: Have a narrower profile, allowing for greater power transmission on a smaller surface area. Friction-Drive Belts: Transmit power through friction between the belt and pulley, often used in light applications. Serpentine Belts: Used in complex systems where one belt drives multiple devices, increasing efficiency and saving space. Other: Other specialized types of belts tailored for specific applications.
`cluchMaterial`	Clutch material	Mt_clutch		drive		Steel, Stainless-Steel, Cast-Iron, Aluminum, Bronze, Brass, Titanium, Nylon, PA-Polyamide, PP-Polypropylene +11 more PE-Polyethylene, PVC-Polyvinyl-Chloride, POM-Polyoxymethylene, PC-Polycarbonate, ABS, Rubber, Polyurethane, Composite-Materials, FRP-Fiber-Reinforced-Plastics, Ceramics, Other
The choice of coupling material depends on the specific system requirements, such as the working environment, loads, and durability requirements. The most commonly used materials for couplings: Carbon Steel: Widely used for its high strength and durability. Carbon steel is relatively inexpensive and easy to machine, but can be prone to corrosion unless properly protected. Stainless Steel: Corrosion-resistant and very strong. Stainless steel is ideal for applications in high-humidity environments or where the coupling is exposed to chemicals. Cast Iron: High compressive strength and good vibration damping properties. Cast iron is heavier and more brittle than steel but is used in systems where high vibration damping is required. Aluminum: Lightweight and corrosion-resistant but less strong than steel. Aluminum is used in applications requiring low weight and where loads are not extreme. Composites: Materials such as carbon fiber or fiberglass combined with epoxy resins. Composites are lightweight, very strong, and corrosion-resistant, ideal for high-performance applications. Bronze: An alloy of copper and tin, known for its good corrosion and wear resistance. Used in systems where high durability and reliability are required.
`cluchTorqueCapacity`	Maximum torque transmitted by the clutch	τ_clutch	Nm	drive	1	0 – 10 000
Maximum torque transmitted by the clutch refers to the highest torque that the clutch can transfer from one shaft to another without slipping or damage. This is a key parameter affecting the performance and reliability of the drive system. Importance of maximum torque transmitted by the clutch: Power transmission: The maximum torque transmitted by the clutch determines the clutch's ability to efficiently transfer power from the engine shaft to the driven shaft. Higher torque allows for the transfer of greater power, which is essential in systems requiring high loads. Operational safety: Exceeding the clutch's maximum torque can lead to slipping, damage to the clutch, or other drivetrain components. Proper determination of this parameter is crucial to ensure safe and reliable operation of the system. Durability and reliability: A clutch designed to operate within its maximum torque limits will be less prone to wear and damage, extending its lifespan and increasing the reliability of the entire drive system. Energy efficiency: An appropriate clutch torque minimizes energy losses due to slipping and ensures efficient power transmission, benefiting the overall system.
`cluchType`	Clutch drive type	Tp_clutch		drive
A coupling is a key component that enables the efficient transfer of torque from the motor to the receiving shaft. The coupling must transmit power, compensate for misalignments, dampen vibrations, and ensure system reliability and durability. Main types of couplings: Flexible Couplings transmit drive through a flexible material that absorbs vibrations and compensates for slight misalignments. Elastomeric couplings are often used for their vibration damping capability. Jaw couplings consist of two metal jaws and an elastomeric insert that transmits drive while damping vibrations. Tyre couplings transmit drive through a flexible ring resembling a tyre, which can deform to compensate for misalignments and dampen vibrations. Rigid Couplings transmit drive through a rigid connection of two shafts using a sleeve (Sleeve Couplings). They do not compensate for misalignments, so the shafts must be perfectly aligned. Flange couplings consist of two flanges bolted to the shafts, transmitting drive without compensating for misalignments. Universal Joints transmit drive in different planes, compensating for larger angular misalignments. An example is Cardan joints, used where shafts operate at an angle. Disc Couplings transmit drive through several thin metal discs that allow slight axial and angular deviations. They compensate for misalignments and transmit high torque. Grid Couplings transmit drive through a metal grid that absorbs vibrations and allows slight axial movements, damping vibrations and compensating for misalignments. Gear Couplings transmit drive through meshing gears, compensating for axial, angular, and parallel misalignments. They are very durable and transmit high torque.
`driveType`	Drive type	Tp_drive		drive		Direct-Drive, Belt-Drive, Clutch-Drive
Types of Fan Impeller Drives refer to the methods by which energy is transferred to the fan impeller, affecting its performance, speed control, and application. The most commonly used types of fan impeller drives: Direct Drive: The motor is directly connected to the impeller, eliminating the need for belts, pulleys, or gearboxes. Advantages of this type of drive include simple construction, high efficiency, low maintenance costs, and quiet operation. It is used in industrial fans, HVAC systems, and ceiling fans. Belt Drive: The motor drives the impeller using a belt and pulleys, allowing flexibility in motor placement and speed adjustment. Advantages include speed control, suitability for limited space installations, and vibration dampening. Typical applications include industrial fans, large ventilation systems, and applications requiring speed adjustment. Clutch Drive: The motor drives the impeller through a clutch that connects the motor shaft to the impeller shaft. Advantages include the ability to transmit high torque, dampen shocks and vibrations, and compensate for slight misalignment of shafts. It is used in industrial applications where precise speed control and reliability are required.
`atexEquipmentCategory`	Device category	C_ATEX		atex		1G, 1D, 2G, 2D, 3G, 3D, 2/3G, 2/3D
The equipment category refers to the classification of equipment intended for use in potentially explosive atmospheres, according to the European ATEX direct… ve (Atmosphères Explosibles). ATEX equipment is classified based on the level of protection and the type of zone in which it can be used. ATEX Equipment Categories: Category 1: Intended for use in zones where an explosive atmosphere is present continuously, for long periods, or frequently. Gas (1G): Zone 0 (continuous hazard from gas, vapor, or mist). Dust (1D): Zone 20 (continuous hazard from dust). These devices must provide a very high level of protection to be safe even in the event of two independent failures. Category 2: Intended for use in zones where an explosive atmosphere is likely to occur during normal operation. Gas (2G): Zone 1 (risk of gas, vapor, or mist during normal operation). Dust (2D): Zone 21 (risk of dust during normal operation). These devices must provide a high level of protection to be safe even in the event of one failure. Category 3: Intended for use in zones where an explosive atmosphere is not likely to occur during normal operation, and if it does occur, it will be infrequent and for a short period. Gas (3G): Zone 2 (occasional occurrence of gas, vapor, or mist). Dust (3D): Zone 22 (occasional occurrence of dust). These devices must provide a normal level of protection.
`atexExplosionGroup`	Group of explosive atmosphere	G_ATEX		atex		I, II, IIA, IIB, IIC
Explosive atmospheres are classified based on the type of explosive substances that may be present in a given environment. This classification is essential for selecting appropriate equipment and protective measures compliant with safety standards, such as ATEX in Europe.Groups of explosive atmospheres:Group I: Covers explosive atmospheres found in mines where methane (firedamp) and coal dust may be present. Equipment used in this group must be designed to operate in harsh mining conditions.Group II: Relates to explosive atmospheres outside of mines and is divided into three subgroups, depending on the type of gases and vapours:Group IIA: Atmospheres containing gases with a lower ignition energy, such as propane. Equipment used in this group must be explosion-proof in the presence of such gases.Group IIB: Atmospheres containing gases with medium ignition energy, such as ethylene. This requires the use of more advanced protective measures compared to Group IIA.Group IIC: Atmospheres containing gases with the highest ignition energy, such as hydrogen and acetylene. Equipment used in this group must meet the highest safety standards, as these gases are extremely flammable and explosive.Group III: Covers explosive atmospheres with dusts and is divided into three subgroups:Group IIIA: Atmospheres containing ignitable fibres and flying particles.Group IIIB: Atmospheres containing non-conductive dusts, such as vegetable and plastic dusts.Group IIIC: Atmospheres containing conductive dusts, such as metallic dusts. Equipment used in this group must be particularly resistant to ignition in the presence of such dusts.Equipment used in explosive atmospheres must be appropriately certified and marked according to the group in which it will operate.
`atexProtectionType`	Type of protection	P_ATEX		atex		d, e, n, p, o
The ATEX protection type refers to methods used in devices to prevent explosions in explosive atmospheres. Each type of protection is designed to secure devices in various conditions and explosive hazard zones. Main ATEX protection types: Ex d (Flameproof Enclosure): The device is enclosed in a housing that withstands internal explosion pressure and prevents flames from escaping. Application examples: junction boxes, motors. Ex e (Increased Safety): Measures are taken to prevent arcs, sparks, and excessive heating of electrical equipment. Application examples: terminals, junction boxes. Ex i (Intrinsic Safety): The device is designed so that any sparking or heat is insufficient to ignite the explosive atmosphere. Application examples: sensors, measuring instruments. Ex n (Non-Sparking): The device is designed not to cause ignition of the explosive atmosphere under normal operating conditions. Application examples: lighting, connectors. Ex p (Pressurized): The device housing is maintained under constant overpressure to prevent explosive gases from entering. Application examples: control cabinets, control systems. Ex q (Powder Filling): The device is filled with powder (e.g., quartz) to prevent the formation of an explosive gas mixture inside the housing. Application examples: capacitors, transformers. Ex m (Encapsulation): Parts of the device are encapsulated in an insulating material to prevent sparks or arcs. Application examples: transformers, relays. Ex o (Oil Immersion): The device is submerged in oil to prevent sparks and arcs. Application examples: transformers, switches. Ex t (Dust Protection): The device is designed to prevent dust from entering the housing. Application examples: devices in dust-hazard zones.
`atexTemperatureClass`	Temperature class	T_ATEX"		atex		T1, T2, T3, T4, T5, T6
The temperature class refers to the maximum surface temperature of a device that cannot be exceeded during normal operation. This is to prevent the ignition of an explosive atmosphere that may be present in the environment. ATEX temperature classes: T1: The maximum surface temperature of the device is 450°C. Examples of gases: hydrogen, acetylene. T2: The maximum surface temperature of the device is 300°C. Examples of gases: ethylene, propane. T3: The maximum surface temperature of the device is 200°C. Examples of gases: kerosene, aviation fuels. T4: The maximum surface temperature of the device is 135°C. Examples of gases: diethyl ether, ethanol. T5: The maximum surface temperature of the device is 100°C. Examples of gases: acetone, methanol. T6: The maximum surface temperature of the device is 85°C. Examples of gases: ethylene, cyclohexane. Selecting the appropriate temperature class is crucial to prevent reaching a temperature that could ignite an explosive atmosphere.
`atexZoneClassification`	Type of explosion hazard zone	Z_ATEX		atex		0, 1, 2, 20, 21, 22
In industry and other environments where flammable gases, vapors, dust, or fibers may be present, it is necessary to classify explosion hazard zones. This classification helps in risk assessment and the appropriate selection of equipment and protective measures. Explosion hazard zones for gases, vapors, and mists Zone 0: An area where an explosive gas atmosphere is present continuously, for long periods, or frequently. Examples include the interior of tanks containing flammable liquids and the interior of pipelines. Zone 1: An area where an explosive gas atmosphere is likely to occur during normal operation. Examples include areas around fuel pumps and sample points in chemical installations. Zone 2: An area where an explosive gas atmosphere is not likely to occur during normal operation, and if it does, it will only be for a short period. Examples include areas around safety valves and locations where gas leaks may occur. Explosion hazard zones for dust Zone 20: An area where an explosive dust atmosphere is present continuously, for long periods, or frequently. Examples include the interiors of flour silos and powder mills. Zone 21: An area where an explosive dust atmosphere is likely to occur during normal operation. Examples include areas around machinery processing dust materials and around industrial vacuum systems. Zone 22: An area where an explosive dust atmosphere is not likely to occur during normal operation, and if it does, it will only be for a short period. Examples include areas around dust storage and dust handling locations. Choosing the right equipment is crucial. Equipment used in explosion hazard zones must meet appropriate safety standards, such as ATEX in Europe, and are classified according to the group and category depending on the zone in which they will be used.
`adjustableSpeed`	Speed control	S_adj		option
Speed control refers to the regulation of the rotational speed of electric motors in devices. This function is crucial in many industrial, domestic, and ventilation applications, where precise speed control affects performance, energy efficiency, and user comfort. Importance of speed control: Energy efficiency: Optimizing rotational speed allows for adjusting energy consumption to current needs, leading to energy savings. Performance: Precise speed control allows achieving optimal performance of devices such as fans, pumps, and power tools. User comfort: In ventilation systems, speed control allows adjusting the airflow to current conditions, improving user comfort. Device protection: Proper adjustment of rotational speed can prevent excessive wear and extend the life of devices. Methods of speed control: Inverters (frequency converters): Allow smooth regulation of motor speed by changing the supply frequency. Voltage regulators: Used in simpler systems to control speed by changing the motor's supply voltage. PWM control (pulse-width modulation): A technique used in electronics for precise speed control by changing the duty cycle of the voltage pulses. Mechanical gearboxes: Mechanical methods of speed control by changing gear ratios in drive systems.
`airflowDirectionControl`	Airflow Direction Control	Air_direction		option
Airflow direction control is the process of managing the movement of air in ventilation, air conditioning, and heating systems to ensure optimal environmenta… conditions indoors. It is a key element of effective indoor air quality management and thermal comfort. Airflow direction control: Allows for even distribution of heating or cooling in rooms, ensuring user comfort. Improves the energy efficiency of HVAC systems by optimally managing airflow, leading to lower energy consumption. Helps remove pollutants, moisture, and unpleasant odors, improving indoor air quality. Prevents condensation and moisture, which can lead to damage to buildings and equipment. Examples of applications: Offices and commercial buildings, Hospitals and laboratories, Industry, Residential homes, Data centers.
`automaticShutoff`	Automatic shutdown	S_shutoff		option
The device is equipped with a mechanism that automatically shuts off its operation after a specified time or upon meeting certain conditions. This feature aims to improve safety, save energy, and extend the device's lifespan. Advantages: Automatic shut-off helps prevent overheating, fires, and other hazards that can occur when the device remains on for extended periods without supervision. By automatically shutting down, the device reduces energy consumption, leading to lower electricity bills and less environmental impact. By avoiding continuous operation or suboptimal conditions, the automatic shut-off feature helps maintain the device in good condition for a longer time. Users do not have to remember to manually turn off the device, which enhances convenience and ease of use.
`backdraftShutter`	Backdraft shutter	Sh_backdraft		option
A backdraft shutter is a mechanical device used in ventilation systems that allows air to flow in one direction and prevents it from flowing back. Backdraft shutters are crucial for the proper functioning of ventilation, air conditioning, and heating systems. Purpose of the backdraft shutter: Backdraft shutters prevent air from returning to the system, which is important for maintaining air quality and ventilation efficiency. They protect the ventilation system from contaminants, dust, and insects, which can improve air quality and system performance. They prevent the loss of heat or cooling through the ventilation system, which can lead to energy savings. The backdraft shutter consists of a movable flap mounted on hinges or in a casing that opens under the influence of air flowing in one direction. When the flow stops or reverses, the shutter closes, blocking the flow in the opposite direction. There are different types of backdraft shutters, such as one-way, gravity, and spring-loaded shutters.
`energyEfficiencyClass`	Energy efficiency class	E_{eff, class}		option		A+++, A++, A+, A, B, C, D, E, F, G
The energy efficiency class indicates how efficiently a device uses energy to perform its function. It is an important parameter for assessing the energy efficiency of electrical and mechanical devices, helping in the selection of more energy-efficient solutions. Energy efficiency classification: A: Highest energy efficiency class, indicates the most energy-efficient devices. B to D: Average energy efficiency. E to G: Lowest energy efficiency, indicates devices that consume the most energy. In some cases, additional classes (A+, A++, A+++) have been introduced to distinguish devices with even higher energy efficiency. Tests are conducted in accordance with international standards such as ISO 50001 (energy management systems) and specific standards for different types of devices. After testing, the device receives an energy label indicating its energy efficiency class and other relevant parameters, such as annual energy consumption.
`guardOpening`	Guard mesh opening	e	mm	option	1	0 – 100
Clear opening of the fan protection guard mesh. It affects safety, pressure loss and the guard compensation factor used in ErP calculations.
`humiditySensor`	Humidity sensor	Sn_humidity		option
A humidity sensor ensures comfort and health by maintaining an optimal humidity level (40-60%) and preventing health issues and mold growth. It aids in energy efficiency by automatically controlling the ventilation system, thus saving energy. It protects buildings from damage caused by moisture. The sensor converts the water vapor content in the air into an electrical signal. Based on humidity readings, the ventilation system automatically turns on or off, regulating airflow. There are different types of humidity sensors, such as capacitive, resistive, and thermal sensors. In bathroom and kitchen fans, they automatically activate at high humidity levels. In recuperation systems, they optimize air exchange. They control humidification and dehumidification, ensuring precise humidity control in critical areas.
`lightIndicator`	Indicator lamp	Lg_indicator		option
An indicator light is a small, usually colored light used to indicate the operational status of a device or system. It is commonly used in many electronic devices, industrial machines, control panels, and ventilation systems. Purpose of the indicator light: The indicator light provides immediate visual information about the operating status of a device, making it easier to monitor and diagnose its operation. It informs the user about the status of the device (e.g., whether it is on or functioning properly), which can prevent dangerous situations and damage. It helps in quickly identifying problems and malfunctions, allowing for immediate intervention and minimizing downtime. Examples of indicator light applications: Ventilation and air conditioning systems, Control panels, Household appliances, Consumer electronics, Alarm and security systems.
`motionSensor`	Motion sensor	Sn_motion		option
A motion sensor is a device that detects movement within its field of operation. It is used in various systems such as lighting, building automation, and ventilation systems. It improves energy efficiency, user comfort, and the safety and hygiene of spaces. A motion sensor allows devices to turn on only when needed, leading to energy savings. They are widely used in bathrooms, offices, corridors, and smart home systems. There are different types of motion sensors, such as passive infrared (PIR) sensors, microwave sensors, and ultrasonic sensors.
`nightMode`	Night mode	Ng_mode		option
The Night Mode function in devices signifies a special operating mode designed to minimize the device's impact on the surroundings, especially during nightti… e hours. The goal of this mode is to reduce noise, brightness, or other potential disturbances that may affect sleep comfort or general night conditions. Night Mode is commonly used in various devices, such as air conditioners, fans, and also in computer and mobile applications. The most important aspects of the Night Mode function: Noise Reduction: For devices like air conditioners or fans, Night Mode can decrease the noise level generated by the unit. In this mode, the device may operate at a lower speed or in a quieter mode so as not to disturb sleep. Automatic Switching: Many devices with the Night Mode function allow automatic switching to this mode at a specified time or depending on location, using sunrise and sunset data. This permits adjustment of settings without the need for manual mode change. Energy Saving: In some cases, Night Mode can also contribute to energy savings by adjusting the device settings in a more energy-efficient manner, especially during nighttime hours when usage intensity is lower. The Night Mode function is beneficial in creating a more comfortable nighttime environment, both in the context of health and user comfort. It allows for better adaptation of the device's operation to the user's needs during night hours.
`overheatProtection`	Overheat Protection	O_{heatProtection}		option
Overheating protection consists of mechanisms and systems built into electrical and mechanical devices to prevent excessive temperature increases that could … ead to device damage, failure, or safety hazards. Importance of overheating protection: Protects users and the environment from potential hazards such as fires or explosions, Prevents thermal damage to components, which increases device longevity, Allows continuous and stable operation of devices without the risk of overheating-induced interruptions. Methods of overheating protection: Thermostats, Thermal fuses, Thermal switches (thermal cutoffs), Ventilation and cooling, Temperature sensors. Examples of overheating protection applications: Household appliances, Computers and electronics, Electric motors, HVAC systems, Industrial equipment.
`panelLCD`	LCD display	LCD_panel		option
An LCD (Liquid Crystal Display) in a device (e.g., fan, air handling unit, controller) is a visual interface that allows the user to read key operating param… ters and diagnostic information.Functionality: It is used to display current settings (e.g., set temperature, required capacity, rotational speed), alarm status, error codes, and operating schedules.HVAC Application: The LCD facilitates configuration and monitoring of the device without the need to connect external diagnostic tools, which is crucial during commissioning and servicing.In contrast to touch-sensitive HMI displays, an LCD typically requires physical buttons or knobs for navigation.
`remoteControl`	Remote control	Rm_control		option
A remote control is a device that enables the remote operation of various electronic devices. Remote controls are commonly used to control televisions, audio systems, air conditioning, ventilation, lighting, and other household and industrial devices. Purpose of the remote control: Allows convenient control of devices without the need to physically approach them, increasing comfort and convenience. Enables controlling the functions of devices from a distance, which is particularly useful in large rooms or systems that are difficult to access directly. Quick and easy changes to device settings without interrupting work or daily activities. The remote control sends a signal to the receiving device using technologies such as infrared (IR), radio waves (RF), Bluetooth, or Wi-Fi. Examples of remote control applications: Televisions, Audio systems, Air conditioning and ventilation, Lighting, Home automation, Household appliances.
`smartHomeCompatibility`	Smart Home Compatibility	S_smartHome		option
The device is capable of working with smart home systems. This means it can be integrated and controlled via smart home platforms such as Amazon Alexa, Google Assistant, Apple HomeKit, Samsung SmartThings, or other home management systems. Advantages: Allows users to remotely control the device using a smartphone, tablet, or computer, regardless of their location. Enables the creation of automation scenarios where devices work together in response to specific events or conditions. For example, lights can automatically turn on when motion is detected, or the air conditioning can activate when the home temperature exceeds a set level. Enables synchronization and collaboration with other smart devices in the home. For example, a smart door lock can work with a security camera to send notifications to the homeowner's phone when the door is opened. Allows control of the device using voice commands through voice assistants such as Amazon Alexa or Google Assistant. Enables monitoring of the device's status, energy consumption, and performance reporting. Users can receive maintenance notifications or alerts about malfunctions.
`temperatureSensor`	Temperature sensor	Sn_temp		option
A temperature sensor is a measuring element monitoring the temperature in the ventilation duct or the ambient environment. In fans, it can be used for: Thermal protection: Safeguards the fan motor against overheating. Capacity regulation: Automatically changes the fan speed depending on the measured temperature to maintain the desired value. Heater/cooler control: Allows precise control of heating or cooling elements within the unit.
`timerFunction`	Time delay	f_timer		option
The time delay function involves introducing a controlled delay between the detection of an event (e.g., increased humidity, presence of people) and the syst… m's response (e.g., turning a fan on or off). Advantages: Allows for more efficient device management by minimizing frequent switching on and off, reducing energy consumption and mechanical wear. Ensures smooth system operation, increasing comfort in rooms by eliminating sudden changes in airflow. Can prevent overloading and damage to the device by providing smooth transitions between operating states.
`WiFiEnabled`	Wi-Fi function	WiFi_enabled		option
The device is equipped with a WiFi module that allows it to connect to a wireless network. This enables the device to communicate with other devices on the same network, access the internet, and use various functions and services that require an internet connection. Advantages: The device can connect to a WiFi network, eliminating the need for network cables. Enables remote control and monitoring of the device using an app on a smartphone, tablet, or computer. The device can automatically download and install software updates, patches, and new features. Can work with other devices on the network, such as smart home systems, voice assistants (e.g., Amazon Alexa, Google Assistant), and other IoT (Internet of Things) devices. Allows sharing of files, printers, and other resources between devices on the same WiFi network.
`acousticPerformanceCertification`	Certification of compliance with acoustic requirements	Crt_acoustic		insulation
Acoustic certification of insulation materials is crucial for confirming their effectiveness in noise reduction. Certification process: Laboratory tests: Conducted in accordance with standards such as ISO 354, ISO 11654, and EN 12354, measuring the ability to absorb, attenuate, and block sound. Norms and standards: Tests compliant with international standards ensure consistency and accuracy of results. Acoustic parameters: Evaluated parameters include sound absorption coefficient (α), sound insulation (R), and sound attenuation (D). Test reports: Test results are documented and form the basis for obtaining the certification.
`insulationAcousticMaterial`	Acoustic insulation material	Mt_{ins, acoustic}		insulation		Mineral-Wool, Acoustic-Foam, Sound-Mat, Acoustic-Composite
Acoustic insulation is crucial for minimizing noise generated by equipment and improving user comfort. The choice of appropriate material and insulation method depends on the specific requirements and working conditions of the equipment. Materials used for acoustic insulation: Mineral wool, including rock wool and glass wool, is widely used for sound absorption. It is effective in damping noise across various frequencies and is often used in fan enclosures and as filler in sound-absorbing panels. Acoustic foams, such as polyurethane foam, melamine foam, and polyethylene foam, are commonly used in fan acoustic insulation. Their cellular structure effectively absorbs sound waves, reducing the noise generated by fans. They are easy to cut and fit into various shapes. Sound-absorbing mats made of rubber, rubber, or synthetic materials are used to dampen noise and vibrations. These mats can be applied to fan surfaces and ventilation systems to reduce noise levels. Acoustic composites consist of layers of different materials, such as acoustic foam, rubber, and metal foil. These multi-layer structures are very effective at damping noise and vibrations generated by fans and other industrial equipment.
`insulationDensity`	Insulation density	ρ_ins	kg/m³	insulation
Insulation density is crucial for thermal efficiency, mechanical properties, compression resistance, acoustic insulation, and dimensional stability of insula… ion materials. Choosing the appropriate insulation density depends on the specific requirements of industrial applications.
`insulationFireResistanceClass`	Fire resistance class of insulation	R_{ins, fire}		insulation		A1, A2, B, C, D, E, F
The fire resistance class refers to the ability of an insulating material to withstand the action of fire for a specified time without losing its protective … roperties. This is a key parameter in assessing fire safety in various industrial and construction applications. Fire resistance classes: A1: Non-combustible materials. Do not contribute to the spread of fire: mineral wool, ceramic fibers. A2: Materials with very limited combustibility. May contain small amounts of combustible materials but do not significantly contribute to the spread of fire: certain types of composite panels. B: Combustible materials but with limited fire spread: polyurethane foam, polyisocyanurate foam. C: Materials with moderate combustibility. May support the spread of fire under certain conditions: some elastomeric foams. D: Highly combustible materials: organic materials with low fire resistance. E: Highly flammable materials. Quickly contribute to the spread of fire: some plastics. F: Extremely flammable materials: materials that easily ignite and burn rapidly.
`insulationSoundAttenuation`	Insulation sound attenuation	A_{ins, sound}	dB	insulation
Sound attenuation refers to the ability of an insulating material to reduce the level of noise passing through it. The effectiveness of sound attenuation is measured in decibels (dB). The higher the attenuation value, the better the material's ability to block sound. Key factors affecting sound attenuation: Material density: Denser materials typically attenuate sound better because they have more mass to absorb and reflect sound waves. Insulation thickness: Thicker layers of insulation have a greater ability to absorb sound, leading to better noise attenuation. Material structure: Porous and fibrous materials, such as mineral wool, are effective at absorbing sound because their structure scatters sound waves.
`insulationThermalConductivity`	Thermal conductivity of insulation	κ_{ins, thermal}		insulation
Thermal conductivity is a measure of a material's ability to conduct heat. It is expressed in watts per meter-kelvin (W/m·K). Lower thermal conductivity indicates better insulating properties of the material. Importance of thermal conductivity: Insulation efficiency: Materials with low thermal conductivity effectively reduce heat loss, leading to better energy efficiency in systems and devices. Energy savings: Using materials with low thermal conductivity helps reduce energy consumption, resulting in lower operating and maintenance costs. Temperature control: Materials with low thermal conductivity help maintain stable temperatures in industrial systems, which is crucial for maintaining the quality of technological processes and products.
`insulationThickness`	Insulation thickness	t_ins	mm	insulation
Insulation thickness is crucial for energy efficiency, temperature control, safety, condensation prevention, and noise reduction. The choice of appropriate thickness depends on specific temperature requirements, type of medium, environmental conditions, and industrial regulations.
`insulationType`	Type of insulation	T_ins		insulation		Acoustic-Insulation, Thermal-Insulation
Equipment insulation is crucial for improving comfort and energy efficiency in various industrial and building applications. Types of insulation: Acoustic insulation reduces noise generated by equipment through the use of dampers, soundproof enclosures, and surface insulation. It involves the application of materials and methods that absorb, dampen, or block sound to reduce noise levels transmitted through air and structures. Thermal insulation limits heat or cold loss, improving energy efficiency by insulating equipment, ducts, pipes, tanks, and buildings. It involves the use of materials and methods that limit heat exchange between the equipment and the environment. The use of appropriate insulation methods and materials allows for optimal equipment operation, reduced energy consumption, and the provision of comfortable indoor conditions.
`thermalMaterial`	Thermal insulation material	Mt_thermal		insulation		Mineral-wool, Polyurethane-Foam, Polyisocyanurate-Foam, Aerogel, Elastomeric-Foam, Expanded-Perlite, Ceramic-Fiber, Calcium-Silicate, Microporous-Material
Thermal insulation of equipment improves energy efficiency and safety. Depending on temperature requirements, space, and costs, various thermal insulation materials are used: Mineral wool is used for insulating pipelines, boilers, furnaces, and tanks. It is characterized by high-temperature resistance and excellent insulating properties. Polyurethane foam (PUR) is used in pipelines, tanks, and refrigeration equipment. It has a low thermal conductivity and is lightweight. Polyisocyanurate foam (PIR), which is superior to PUR, has higher temperature resistance and is used in similar applications. Aerogel offers a very low thermal conductivity, is ideal for extreme temperatures, and is lightweight and thin. Elastomeric foams are used for insulating pipelines and tanks in HVAC and refrigeration systems. They are flexible and easy to install. Expanded perlite is a lightweight material resistant to high temperatures, used for insulating pipelines, boilers, and tanks in the chemical industry. Ceramic fibers are used for insulating furnaces, boilers, and reactors, offering excellent resistance to extremely high temperatures. Calcium silicates are used for insulating high-temperature equipment such as furnaces and boilers. They are durable and resistant to mechanical damage. Microporous insulation materials provide the highest insulation with minimal thickness, ideal for specialized equipment where space is limited.
`thermalPerformanceCertification`	Certification of compliance with thermal requirements	Crt_thermal		insulation
Thermal certification of insulation materials is crucial for confirming their ability to effectively provide thermal insulation. The certification process involves a series of tests and analyses according to international norms and standards. Certification process: Laboratory tests: Materials undergo detailed testing in laboratories that measure the thermal properties of insulation materials. Norms and standards: Tests are conducted in accordance with international standards such as ASTM C518 (thermal conductivity measurement) and ISO 8302 (guarded hot plate method). Thermal parameters: Evaluated parameters include thermal conductivity (λ), thermal resistance (R), and thermal insulation capability. These values are crucial for determining the effectiveness of a material's thermal insulation. Test reports: After the tests are conducted, the laboratory issues a test report indicating whether the material meets the required thermal standards. This report forms the basis for obtaining the certification.
`frequencyRangeOnDraft`		f_{draft, range}	Hz	configuration	0.1	0 – 200
`frequencyStepOnDraft`		Δf_{draft, step}	Hz	configuration	0.1	0 – 50
`powerCurveType`	Power curve mode	T_{power, curve}		configuration		electrical, onshaft
Specifies the reference point for the device's power consumption. If the Electric option is selected, the curve shows the total power drawn from the grid including all losses. In the case of the Shaft option, the mechanical power delivered to the impeller is presented; in this scenario, the system accounts for the motor efficiency (and possibly the inverter) to calculate and modify the actual electric power consumption curve.
`regulationContinousStep`	Step/Continous regulation	reg_{step, cont}		configuration		none, continous, step, continousOrStep
`regulationCurveType`	Curve generation method	T_{reg, curve}		configuration		theoretical, individual, approximate
`roenConfig`	Correction ratio	Roen_conf		configuration	0.01	-1 – 30
`rotationStepOnDraft`		n_{draft, step}	rpm	configuration	0.1	0 – 1 000
`VECRangeOnDraft`		VEC_{draft, range}	V	configuration	0.1	0 – 200
`VECStepOnDraft`		VEC_{draft, step}	V	configuration	0.1	0 – 5
`airflowMode`	Draft arrangement (forced / induced)	q_{v, mode}		housing		Airflow-Forced, Airflow-Induced
Draft arrangement tells whether the fan pushes air through the heat exchanger (forced draft) or pulls air through it (induced draft).
`connectionType`	Connection type	Conn_cas		housing		Flanged, Slip-Fit, Flexible-Coupling, Gasketed, Clamped
The connection type specifies the method for connecting the fan's spigots to the ventilation duct network, which affects airtightness, ease of assembly, and … aintenance. Flanged: Connection using flanges and bolts. It provides a rigid and very tight seal. This is standard for medium and large fans, especially at higher pressures. Slip-Fit: Connection by sliding the spigot into the duct or connecting element. This is a fast and simple method, but often requires additional sealing (e.g., tape or silicone). Typical for smaller and round ducts. Flexible-Coupling: It uses a flexible cuff (e.g., rubber or fabric) secured with clamps. It serves to isolate the fan's vibration and noise from the rest of the ductwork. It allows for easy assembly and disassembly. Gasketed: A connection where a gasket (e.g., rubber or foam) is placed between the joined surfaces, ensuring greater airtightness than a slip-fit connection. Clamped: A connection that uses clamps, clips, or buckles for fast and strong compression of the joined elements. Often used in round spiro-type ducts.
`corrosionResistanceClass`	Corrosion resistance class	Corr_class		housing		, C1, C2, C3, C4, C5
The corrosion resistance class (according to ISO 12944) specifies the aggressiveness of the environment in which the fan can be operated long-term without si… nificant structural damage. Higher class means greater protection. C1 (Very Low): Environments with very low aggressiveness, e.g., heated buildings with clean air (offices, schools, hotels). Low corrosion risk. C2 (Low): Environments with low aggressiveness, e.g., unheated halls, warehouses, garages, dry rural areas. Slight atmospheric contamination occurs. C3 (Moderate): Environments with moderate aggressiveness, e.g., laundries, breweries, food processing plants, swimming pools (with moderate humidity), urban and industrial areas with moderate contamination. C4 (High): Environments with high aggressiveness, e.g., chemical plants, cold storage, swimming pools (with high humidity and chloramines), industrial and coastal areas with significant salinity. C5 (Very High): Environments with very high aggressiveness, e.g., constant condensation and high humidity, plants with strong chemical aggression, marine and coastal areas with extreme salinity. Requires special, thick protective coatings or stainless steel.
`housingConstruction`	Casing construction	C_cas		housing		Welded, Spot-welded, Bolted, Riveted, Folded, Monoblock, Modular
The casing construction refers to the method of joining the fan casing elements, which influences its strength, tightness, and ease of maintenance. Welded: Casing elements are permanently joined using welding (e.g., MAG, TIG), providing very high tightness and rigidity, ideal for high-pressure and durability applications. Spot-welded: Metal elements are joined at points by resistance welding, which is a fast and economical method commonly used in mass production. Bolted: The casing is assembled using screws and nuts, allowing for disassembly and easy access to the interior for servicing or modification. Provides moderate tightness. Riveted: Elements are permanently joined using rivets, which is a durable method but makes later disassembly difficult without damaging the rivets. Folded: The casing is formed by folding sheet metal and joining with a seam or special profiles, which can eliminate the need for additional fasteners and improve aesthetics (often in small devices). Monoblock: A casing that forms one single, inseparable part (e.g., cast or pressure-formed), ensuring the highest tightness and rigidity, but preventing disassembly. Modular: The casing consists of several sections (modules) joined by screws, seals, and profiles, which allows for easy configuration, expansion, and transport of large Air Handling Units.
`housingMaterial`	Casing material	Mt_cas		housing		Stainless-Steel, Carbon-Steel, Galvanized-Steel, Cast-Iron, Aluminum, Bronze, Brass, Titanium, Fiberglass-Composites, Carbon-Fiber +10 more Nylon, Polyamide, PP-Polypropylene, PE-Polyethylene, PVC-Polyvinyl-Chloride, POM-Polyoxymethylene, PC-Polycarbonate, ABS, Plastic-General, Other
The casing material defines the raw material used for the fan's external construction, which influences its durability, corrosion resistance, weight, and app… ication. Stainless Steel: High resistance to corrosion and aggressive media, used in the food, chemical, and pharmaceutical industries. Carbon Steel: Common, economical material, usually requiring painting or other corrosion protection. Galvanized Steel: Steel coated with a zinc layer, providing good corrosion resistance in standard atmospheric conditions. Cast Iron: Heavy and durable material, with good resistance to abrasion and high temperatures, often used in motors and larger fans. Aluminum: Lightweight and corrosion-resistant (especially in wet environments), used when low weight is required (e.g., on rooftops). Bronze: Copper-tin alloy, corrosion-resistant, used in specialized, marine, or explosive-proof applications. Brass: Copper-zinc alloy, used in fittings and connections, corrosion-resistant. Titanium: Very lightweight and exceptionally resistant to corrosion and extreme temperatures, used in the most demanding applications. Fiberglass Composites: Lightweight, resistant to chemical corrosion and weathering, used where metal is undesirable. Carbon Fiber: Extremely lightweight and very high-strength material, used in advanced designs for maximum performance. Nylon (Polyamide): Thermoplastic polymer, lightweight, abrasion-resistant, often used in small components and impellers. Polyamide: Reinforced version of nylon, characterized by good mechanical and thermal strength. PP (Polypropylene): Lightweight, resistant to many chemicals, used in low-temperature and moderate-pressure applications. PE (Polyethylene): Flexible and chemically resistant polymer, used in casings for low-aggressivity environments. PVC (Polyvinyl Chloride): Chemical resistant, often used in applications requiring corrosion resistance and low cost. POM (Polyoxymethylene): Plastic with high stiffness and low friction coefficient, used for precision moving parts. PC (Polycarbonate): Transparent and highly impact-resistant plastic, used where visual inspection or high mechanical resistance is required. ABS: Common, durable, and easy-to-form thermoplastic, used in general-purpose casings. Plastic General: General term for various polymers, typically used in household and low-power fans due to low weight and cost. Other: Indicates the use of a specific, non-standard material required by unique operating conditions.
`housingSurface`	Surface finish type	S_cas		housing		Painted, Galvanized, Anodized, Powder-Coated, Polished, Epoxy-Coated, No-Coated
The surface finish type is the final external treatment of the fan casing, aimed at protecting against corrosion, enhancing aesthetics, and increasing durabi… ity. Painted: Surface covered with paint, primarily for corrosion protection and coloring. The degree of protection depends on the type and quality of the paint. Galvanized: Steel coated with a layer of zinc (by hot-dip or electrolytic method), which provides very good, durable cathodic protection against corrosion. Anodized: An electrochemical process mainly used for aluminum, creating a hard, abrasion- and corrosion-resistant oxide layer on the surface. Improves aesthetics. Powder-Coated: Dry paint is applied electrostatically and then heat-cured. Provides a very durable, scratch-resistant, and uniform coating. Polished: The surface is mechanically polished to achieve a smooth, mirror-like finish. Usually applied for aesthetic or hygienic reasons (e.g., stainless steel). Epoxy-Coated: A coating of epoxy resin, providing high chemical and mechanical resistance, used in aggressive environments. No-Coated: The material is not covered with any additional protective or decorative layer, which applies when the base material (e.g., stainless steel, plastic) is sufficiently resistant or when a raw appearance is intentionally desired.
`housingThickness`	Thickness of casing	t_cas	mm	housing	0.1	0 – 50
The fan casing thickness is a key structural parameter, usually measured in millimeters (mm), which affects: Rigidity and stability: A thicker casing prov… des greater rigidity and stability to the fan, minimizing vibration and deflection at higher pressures. Acoustic damping: Increased thickness, especially when combined with insulating materials (e.g., mineral wool in box-type casings), improves acoustic insulation and reduces the noise level emitted by the fan. Durability and mechanical resistance: It affects the casing's resistance to mechanical damage (e.g., impact during transport, operation) and longevity in harsh conditions. Application: In HVAC systems, the minimum casing thickness is often specified by the airtightness class (e.g., according to EN 1886 standard) and operating pressure. Industrial fans operating under high pressure have much thicker casings than domestic fans.
`housingType`	Casing type	Tp_cas		housing		Scroll-Casing, Panel-Casing, Cylindrical-Casing, Box-Type-Casing, Plenum, No-Casing
The casing type refers to the physical external construction of the fan or ventilation unit, which is crucial for installation, acoustics, and aerodynamic pe… formance. Scroll-Casing: Characterized by a scroll shape that efficiently converts the kinetic energy of the air into pressure energy. Typical for centrifugal fans. Panel-Casing: A flat housing, often mounted directly in a wall or panel, typical for axial fans. Cylindrical-Casing: A tube or cylinder shape, ideal for mounting within a ventilation duct, minimizing space occupation. Box-Type-Casing: A cuboid shape, often used in Air Handling Units (AHU) or for indoor-mounted fans, offering easy service access. Plenum: A large chamber without a traditional scroll casing, used to equalize pressure before introducing air into the duct system. Characteristic of plug fans. No-Casing: Refers to the impeller or the impeller-motor assembly itself, intended for installation in custom structures or inside larger ventilation units.
`mountingType`	Mounting type	Mnt_cas		housing		Base-Mount, Wall-Mount, Ceiling-Mount, Hanging, Duct-Mount, Window-Mount, Roof-Mount, Flange-Mount, Portable-Mobile, Skid-Mount +3 more Fan-Array, Plug-Fan, Modular-System
The mounting type specifies how the fan is installed in the ventilation system or facility, which is crucial for proper operation, service access, and struct… ral requirements. Base-Mount: The fan is installed on a fixed, horizontal base (e.g., floor, foundation), often using anti-vibration pads. Wall-Mount: The fan is mounted directly in a wall opening or on its surface, typical for axial fans. Ceiling-Mount: Installation of the fan on the ceiling or in the ceiling structure, popular in room air distribution systems. Hanging: The fan is suspended from a supporting structure (e.g., roof, ceiling) using ropes or rods, often to reduce vibration and space occupied. Duct-Mount: The fan is installed directly in line with the ventilation duct (e.g., centrifugal fans in a cylindrical casing), ideal for increasing pressure in existing networks. Window-Mount: Installation of the fan in a window frame, usually for small exhaust fans. Roof-Mount: The fan is installed on the roof of a building, often as an exhaust or supply air component. Flange-Mount: The fan is attached to piping or other structure using flanges and bolts, ensuring a rigid, sealed connection. Portable/Mobile: The fan is equipped with wheels or handles, allowing for easy relocation and temporary use. Skid-Mount: The fan is mounted on a common, welded base frame, facilitating transport, installation, and ensuring stability. Fan Array: An assembly of multiple smaller fans placed in a large chamber (plenum), working in parallel for high capacity and redundancy. Plug-Fan: A fan without a scroll casing, designed for installation inside the large plenum chamber of Air Handling Units. Modular System: The fan is an integral part of a larger, complex system (e.g., AHU), where individual sections are joined on site.
`ringType`	Fan ring type			housing		Ring-Flanged, Ring-Circular, Ring-Orifice, Ring-Bellmouth, Ring-Elliptical, Ring-Venturi, Ring-Cylindrical, Ring-Diffuser
Shape of the ring or casing around the axial impeller. It forms the inlet and the flow channel of the fan, so it affects performance, efficiency and noise.
`erpCharCoeff`	Characteristic coefficient	C_c		erp	0.001	0 – 10
A correction factor accounting for air compressibility during flow through the impeller. In standard ventilation systems, it takes the value of 1, as pressure increases are typically too low (below 2000 Pa) to significantly change air density and affect the ErP efficiency calculation results.
`erpCompliant2015`	Compliance with ErP2015 regulation (327/2011)	ErP₂₀₁₅		erp
Determines whether the device meets the stringent energy efficiency standards that came into effect in 2015 in accordance with EU Regulation 327/2011. This verification confirms that the fan unit achieves the required minimum efficiency threshold, allowing for its legal use and sale on the European market. Devices meeting these requirements are optimized for low electricity consumption relative to the provided operating parameters.
`erpCompliant2026`	Compliance with ErP2026 regulation (2024/1834)	ErP₂₀₂₆		erp
Determines whether the device complies with the latest, more stringent energy efficiency requirements introduced by EU Regulation 2024/1834, which replaces o… updates previous guidelines. This verification confirms compliance with the strict efficiency thresholds effective from 2026, mandating the use of the most advanced drive and aerodynamic technologies to further reduce energy consumption in ventilation systems across the European Union.
`erpEtaActual`	Fan efficiency	n_act	%	erp	0.1	0 – 100
This parameter determines the energy effectiveness of the device, expressed as static or total efficiency. The choice of a specific value depends on the applied measurement category (A-E): total efficiency accounts for the kinetic energy of the air at the outlet (dynamic pressure), whereas static efficiency ignores it, which is crucial when selecting fans operating in ducted systems or with a free outlet.
`erpExemptionReason`	ErP exemption reason	ErP_exempt		erp		Erp-Exempt-None, Erp-Exempt-Low-Power, Erp-Exempt-Smoke, Erp-Exempt-Atex, Erp-Exempt-High-Temp, Erp-Exempt-Low-Temp, Erp-Exempt-Aggressive, Erp-Exempt-Spare-Part
Specifies the legal basis exempting the device from energy efficiency requirements due to its specialized purpose or harsh operating conditions. Main exemptions include smoke extraction units, devices for operation in potentially explosive atmospheres (ATEX), fans operating at extreme temperatures (above 100°C or below -40°C), and process exhausts transporting highly corrosive media or high dust concentrations.
`erpMeasurementCategory`	Measurement category	ErP_{msrm, cat}		erp		A, B, C, D, E, B/D, A/C
The measurement category defines the fan inlet and outlet configuration during efficiency tests, affecting whether dynamic pressure is included in the calcul… tions:A: Free inlet and free outlet – no connecting ducts.B: Free inlet and ducted outlet.C: Ducted inlet and free outlet.D: Ducted inlet and ducted outlet.E: Special configuration for measuring non-axial flow fans under atypical conditions.
`erpNActual`	Efficiency coefficient	N_act		erp	0.1	0 – 100
A parameter defining the fan's energy efficiency class at its best efficiency point. It is calculated based on actual efficiency (static or total depending on measurement category A-E) and the motor's input power. For the device to meet ErP requirements, this value must be equal to or higher than the minimum efficiency threshold specified in EU regulations for a given fan type.
`erpPower`	Power consumption	P_e	W	erp	1	0 – 1 000 000
It determines the electric power consumed by the fan motor at its point of highest energy efficiency. This parameter includes the total power consumption by the drive system (motor along with any control system) and is used to calculate whether the device falls within the energy consumption limits set by the ErP Directive.
`erpPressure`	Pressure increase	Δp	Pa	erp	1	0 – 100 000
It determines the pressure difference generated by the fan, necessary to overcome system resistance. Depending on the selected measurement category (A-E), this parameter refers to the static or total pressure measured at the point of optimal device efficiency in accordance with the requirements of the ErP Directive.
`erpSpecificSpeed`	Specific speed	σ_BEP		erp	0.01	0 – 10
A dimensionless parameter used to classify fans based on their operating characteristics. It defines the relationship between rotational speed, flow rate, and pressure rise at the point of optimal efficiency. It allows engineers to assess whether a given design type (e.g., centrifugal, axial, or mixed-flow) is best suited for specific installation parameters in terms of maximum ErP energy efficiency.
`erpSpeed`	Rotational speed	n	rpm	erp	1	0 – 10 000
Determines the number of impeller revolutions per minute (RPM) at its best efficiency point (BEP). This parameter is crucial for ErP verification as it directly affects performance, generated noise, and power consumption – the higher the efficiency at a given speed, the better the device's efficiency ratio.
`erpVerificationType`	ErP verification type	ErP_type		erp		Erp-Fan, Erp-RVU, Erp-NRVU, Erp-Exempt
Determines the device's energy efficiency standards in accordance with EU directives. Depending on the intended use, the verification confirms the efficiency of the fan itself, the entire system for residential or commercial buildings, or indicates an exemption from standards for specialized and safety equipment.
`erpVolume`	Airflow	q_v	m³/h	erp	1	0 – 1 000 000
It determines the volume of air moved by the device per unit of time, typically given in m³/h or m³/s. In the context of ErP verification, this parameter is measured at the Best Efficiency Point (BEP), which allows for an accurate assessment of fan performance relative to the consumed electrical power.
`erpVsdStatus`	VSD type	ErP_vsd		erp		vsdNone, vsdIntegrated, vsdBundled, vsdExternal
Indicates whether the device is equipped with a variable speed drive (VSD). According to ErP, most fans must feature speed control (integrated or external) to optimize energy consumption and comply with EU efficiency standards.