Fans¶

7 object types from idfpy.models.fans · EnergyPlus 26.2

Object	Summary
Fan:ComponentModel	A detailed fan type for constant-air-volume (CAV) and variable-air-volume (VAV) systems.
Fan:ConstantVolume	Constant volume fan that is intended to operate continuously based on a time schedule.
Fan:OnOff	Constant volume fan that is intended to cycle on and off based on cooling/heating load or other control …
Fan:SystemModel	Versatile simple fan that can be used in variable air volume, constant volume, on-off cycling, two-speed or …
Fan:VariableVolume	Variable air volume fan where the electric power input varies according to a performance curve as a function …
Fan:ZoneExhaust	Models a fan that exhausts air from a zone.
FanPerformance:NightVentilation	Specifies an alternate set of performance parameters for a fan.

Fan:ComponentModel¶

from idfpy.models import FanComponentModel

A detailed fan type for constant-air-volume (CAV) and variable-air-volume (VAV) systems. It includes inputs that describe the air-distribution system as well as the fan, drive belt (if used), motor, and variable-frequency-drive (if used).

Field	Type	Default	Details
`name` Name required	string
`air_inlet_node_name` Air Inlet Node Name required	string
`air_outlet_node_name` Air Outlet Node Name required	string
`availability_schedule_name` Availability Schedule Name	reference		Availability schedule name for this system. Schedule value > 0 means the system is available. If this field is blank, the system is always available. Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`maximum_flow_rate` Maximum Flow Rate	number or `Autosize` m3/s
`minimum_flow_rate` Minimum Flow Rate	number or `Autosize` m3/s
`fan_sizing_factor` Fan Sizing Factor	number	`1.0`	Applied to specified or autosized max fan airflow Range: ≥ 1
`fan_wheel_diameter` Fan Wheel Diameter required	number m		Diameter of wheel outer circumference Range: > 0
`fan_outlet_area` Fan Outlet Area required	number m2		Area at fan outlet plane for determining discharge velocity pressure Range: > 0
`maximum_fan_static_efficiency` Maximum Fan Static Efficiency required	number		Maximum ratio between power delivered to air and fan shaft input power Determined from fan performance data Range: > 0, ≤ 1
`euler_number_at_maximum_fan_static_efficiency` Euler Number at Maximum Fan Static Efficiency required	number		Euler number (Eu) determined from fan performance data Range: > 0
`maximum_dimensionless_fan_airflow` Maximum Dimensionless Fan Airflow required	number		Corresponds to maximum ratio between fan airflow and fan shaft rotational speed for specified fan wheel diameter Determined from fan performance data Range: > 0
`motor_fan_pulley_ratio` Motor Fan Pulley Ratio	number or `Autosize`	`1.0`	Ratio of motor pulley diameter to fan pulley diameter
`belt_maximum_torque` Belt Maximum Torque required	number or `Autosize` N-m		Maximum torque transmitted by belt
`belt_sizing_factor` Belt Sizing Factor	number	`1.0`	Applied to specified or autosized max torque transmitted by belt Range: ≥ 1
`belt_fractional_torque_transition` Belt Fractional Torque Transition	number	`0.167`	Region 1 to 2 curve transition for belt normalized efficiency Range: ≥ 0, ≤ 1
`motor_maximum_speed` Motor Maximum Speed required	number rev/min		Maximum rotational speed of fan motor shaft Range: > 0
`maximum_motor_output_power` Maximum Motor Output Power required	number or `Autosize` W		Maximum power input to drive belt by motor
`motor_sizing_factor` Motor Sizing Factor	number	`1.0`	Applied to specified or autosized motor output power Range: ≥ 1
`motor_in_airstream_fraction` Motor In Airstream Fraction	number	`1.0`	0.0 means motor outside air stream 1.0 means motor inside air stream Range: ≥ 0, ≤ 1
`vfd_efficiency_type` VFD Efficiency Type	choice		Efficiency depends on fraction of full-load motor speed Efficiency depends on fraction of full-load motor input power If field blank, then assumes constant VFD efficiency (0.97) One of `Power`, `Speed`
`maximum_vfd_output_power` Maximum VFD Output Power required	number or `Autosize` W		Maximum power input to motor by VFD
`vfd_sizing_factor` VFD Sizing Factor	number	`1.0`	Applied to specified or autosized VFD output power Range: ≥ 1
`fan_pressure_rise_curve_name` Fan Pressure Rise Curve Name required	reference		Pressure rise depends on volumetric flow, system resistances, system leakage, and duct static pressure set point Names a Curve:Bicubic, Curve:Biquadratic, Curve:CubicLinear, Curve:FanPressureRise, Curve:QuadraticLinear, Table:Lookup
`duct_static_pressure_reset_curve_name` Duct Static Pressure Reset Curve Name required	reference		Function of fan volumetric flow Minimum and maximum fan airflows correspond respectively to minimum and maximum duct static pressure set points Names a Curve:Cubic, Curve:DoubleExponentialDecay, Curve:Exponent, Curve:ExponentialDecay, Curve:ExponentialSkewNormal, Curve:Functional:PressureDrop, Curve:Linear, Curve:Quadratic, Curve:Quartic, Curve:RectangularHyperbola1, Curve:RectangularHyperbola2, Curve:Sigmoid and 1 more
`normalized_fan_static_efficiency_curve_name_non_stall_region` Normalized Fan Static Efficiency Curve Name-Non-Stall Region required	reference		xfan <= 0 Curve should have maximum of 1.0 Names a Curve:Cubic, Curve:DoubleExponentialDecay, Curve:Exponent, Curve:ExponentialDecay, Curve:ExponentialSkewNormal, Curve:Functional:PressureDrop, Curve:Linear, Curve:Quadratic, Curve:Quartic, Curve:RectangularHyperbola1, Curve:RectangularHyperbola2, Curve:Sigmoid and 1 more
`normalized_fan_static_efficiency_curve_name_stall_region` Normalized Fan Static Efficiency Curve Name-Stall Region required	reference		xfan > 0 Curve should have maximum of 1.0 Names a Curve:Cubic, Curve:DoubleExponentialDecay, Curve:Exponent, Curve:ExponentialDecay, Curve:ExponentialSkewNormal, Curve:Functional:PressureDrop, Curve:Linear, Curve:Quadratic, Curve:Quartic, Curve:RectangularHyperbola1, Curve:RectangularHyperbola2, Curve:Sigmoid and 1 more
`normalized_dimensionless_airflow_curve_name_non_stall_region` Normalized Dimensionless Airflow Curve Name-Non-Stall Region required	reference		xspd <= 0 Curve should have maximum of 1.0 Names a Curve:Cubic, Curve:DoubleExponentialDecay, Curve:Exponent, Curve:ExponentialDecay, Curve:ExponentialSkewNormal, Curve:Functional:PressureDrop, Curve:Linear, Curve:Quadratic, Curve:Quartic, Curve:RectangularHyperbola1, Curve:RectangularHyperbola2, Curve:Sigmoid and 1 more
`normalized_dimensionless_airflow_curve_name_stall_region` Normalized Dimensionless Airflow Curve Name-Stall Region required	reference		xspd > 0 Curve should have maximum of 1.0 Names a Curve:Cubic, Curve:DoubleExponentialDecay, Curve:Exponent, Curve:ExponentialDecay, Curve:ExponentialSkewNormal, Curve:Functional:PressureDrop, Curve:Linear, Curve:Quadratic, Curve:Quartic, Curve:RectangularHyperbola1, Curve:RectangularHyperbola2, Curve:Sigmoid and 1 more
`maximum_belt_efficiency_curve_name` Maximum Belt Efficiency Curve Name	reference		Determines maximum fan drive belt efficiency in log space as function of xbelt,max Curve should have minimum of -4.6 and maximum of 0.0 If field blank, assumes output of curve is always 1.0 Names a Curve:Cubic, Curve:DoubleExponentialDecay, Curve:Exponent, Curve:ExponentialDecay, Curve:ExponentialSkewNormal, Curve:Functional:PressureDrop, Curve:Linear, Curve:Quadratic, Curve:Quartic, Curve:RectangularHyperbola1, Curve:RectangularHyperbola2, Curve:Sigmoid and 1 more
`normalized_belt_efficiency_curve_name_region_1` Normalized Belt Efficiency Curve Name - Region 1	reference		Region 1 (0 <= xbelt < xbelt,trans) Curve should have minimum > 0.0 and maximum of 1.0 If field blank, assumes output of curve is always 1.0 in Region 1 Names a Curve:Cubic, Curve:DoubleExponentialDecay, Curve:Exponent, Curve:ExponentialDecay, Curve:ExponentialSkewNormal, Curve:Functional:PressureDrop, Curve:Linear, Curve:Quadratic, Curve:Quartic, Curve:RectangularHyperbola1, Curve:RectangularHyperbola2, Curve:Sigmoid and 1 more
`normalized_belt_efficiency_curve_name_region_2` Normalized Belt Efficiency Curve Name - Region 2	reference		Region 2 (xbelt,trans <= xbelt <= 1) Curve should have minimum > 0.0 and maximum of 1.0 If field blank, assumes output of curve is always 1.0 in Region 2 Names a Curve:Cubic, Curve:DoubleExponentialDecay, Curve:Exponent, Curve:ExponentialDecay, Curve:ExponentialSkewNormal, Curve:Functional:PressureDrop, Curve:Linear, Curve:Quadratic, Curve:Quartic, Curve:RectangularHyperbola1, Curve:RectangularHyperbola2, Curve:Sigmoid and 1 more
`normalized_belt_efficiency_curve_name_region_3` Normalized Belt Efficiency Curve Name - Region 3	reference		Determines normalized drive belt efficiency Region 3 (xbelt > 1) Curve should have minimum > 0.0 and maximum of 1.0 If field blank, assumes output of curve is always 1.0 in Region 3 Names a Curve:Cubic, Curve:DoubleExponentialDecay, Curve:Exponent, Curve:ExponentialDecay, Curve:ExponentialSkewNormal, Curve:Functional:PressureDrop, Curve:Linear, Curve:Quadratic, Curve:Quartic, Curve:RectangularHyperbola1, Curve:RectangularHyperbola2, Curve:Sigmoid and 1 more
`maximum_motor_efficiency_curve_name` Maximum Motor Efficiency Curve Name	reference		Curve should have minimum > 0.0 and maximum of 1.0 If field blank, assumes output of curve is always 1.0 Names a Curve:Cubic, Curve:DoubleExponentialDecay, Curve:Exponent, Curve:ExponentialDecay, Curve:ExponentialSkewNormal, Curve:Functional:PressureDrop, Curve:Linear, Curve:Quadratic, Curve:Quartic, Curve:RectangularHyperbola1, Curve:RectangularHyperbola2, Curve:Sigmoid and 1 more
`normalized_motor_efficiency_curve_name` Normalized Motor Efficiency Curve Name	reference		Curve should have minimum > 0.0 and maximum of 1.0 If field blank, assumes output of curve is always 1.0 Names a Curve:Cubic, Curve:DoubleExponentialDecay, Curve:Exponent, Curve:ExponentialDecay, Curve:ExponentialSkewNormal, Curve:Functional:PressureDrop, Curve:Linear, Curve:Quadratic, Curve:Quartic, Curve:RectangularHyperbola1, Curve:RectangularHyperbola2, Curve:Sigmoid and 1 more
`vfd_efficiency_curve_name` VFD Efficiency Curve Name	reference		Determines VFD efficiency as function of motor load or speed fraction Curve should have minimum > 0.0 and maximum of 1.0 If field blank, assumes constant VFD efficiency (0.97) Names a Curve:Cubic, Curve:DoubleExponentialDecay, Curve:Exponent, Curve:ExponentialDecay, Curve:ExponentialSkewNormal, Curve:Functional:PressureDrop, Curve:Linear, Curve:Quadratic, Curve:Quartic, Curve:RectangularHyperbola1, Curve:RectangularHyperbola2, Curve:Sigmoid and 1 more
`end_use_subcategory` End-Use Subcategory	string	`General`	Any text may be used here to categorize the end-uses in the ABUPS End Uses by Subcategory table.

Referenced by 6 object types

AirLoopHVAC:DedicatedOutdoorAirSystem, AirLoopHVAC:ExhaustSystem, AirLoopHVAC:OutdoorAirSystem:EquipmentList, AirLoopHVAC:UnitarySystem, Branch, ZoneHVAC:EvaporativeCoolerUnit

Fan:ConstantVolume¶

from idfpy.models import FanConstantVolume

Constant volume fan that is intended to operate continuously based on a time schedule. This fan will not cycle on and off based on cooling/heating load or other control signals.

Field	Type	Default	Details
`name` Name required	string
`availability_schedule_name` Availability Schedule Name	reference		Availability schedule name for this system. Schedule value > 0 means the system is available. If this field is blank, the system is always available. Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`fan_total_efficiency` Fan Total Efficiency	number	`0.7`	Range: > 0, ≤ 1
`pressure_rise` Pressure Rise required	number Pa
`maximum_flow_rate` Maximum Flow Rate	number or `Autosize` m3/s
`motor_efficiency` Motor Efficiency	number	`0.9`	Range: > 0, ≤ 1
`motor_in_airstream_fraction` Motor In Airstream Fraction	number	`1.0`	0.0 means fan motor outside of air stream, 1.0 means motor inside of air stream Range: ≥ 0, ≤ 1
`air_inlet_node_name` Air Inlet Node Name required	string
`air_outlet_node_name` Air Outlet Node Name required	string
`end_use_subcategory` End-Use Subcategory	string	`General`	Any text may be used here to categorize the end-uses in the ABUPS End Uses by Subcategory table.

Referenced by 28 object types

Fan:OnOff¶

from idfpy.models import FanOnOff

Constant volume fan that is intended to cycle on and off based on cooling/heating load or other control signals. This fan can also operate continuously like Fan:ConstantVolume.

Field	Type	Default	Details
`name` Name required	string
`availability_schedule_name` Availability Schedule Name	reference		Availability schedule name for this system. Schedule value > 0 means the system is available. If this field is blank, the system is always available. Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`fan_total_efficiency` Fan Total Efficiency	number	`0.6`	Range: > 0, ≤ 1
`pressure_rise` Pressure Rise required	number Pa
`maximum_flow_rate` Maximum Flow Rate	number or `Autosize` m3/s
`motor_efficiency` Motor Efficiency	number	`0.8`	Range: > 0, ≤ 1
`motor_in_airstream_fraction` Motor In Airstream Fraction	number	`1.0`	0.0 means fan motor outside of air stream, 1.0 means motor inside of air stream Range: ≥ 0, ≤ 1
`air_inlet_node_name` Air Inlet Node Name required	string
`air_outlet_node_name` Air Outlet Node Name required	string
`fan_power_ratio_function_of_speed_ratio_curve_name` Fan Power Ratio Function of Speed Ratio Curve Name	reference		Names a Curve:Cubic, Curve:DoubleExponentialDecay, Curve:Exponent, Curve:ExponentialDecay, Curve:ExponentialSkewNormal, Curve:Functional:PressureDrop, Curve:Linear, Curve:Quadratic, Curve:Quartic, Curve:RectangularHyperbola1, Curve:RectangularHyperbola2, Curve:Sigmoid and 1 more
`fan_efficiency_ratio_function_of_speed_ratio_curve_name` Fan Efficiency Ratio Function of Speed Ratio Curve Name	reference		Names a Curve:Cubic, Curve:DoubleExponentialDecay, Curve:Exponent, Curve:ExponentialDecay, Curve:ExponentialSkewNormal, Curve:Functional:PressureDrop, Curve:Linear, Curve:Quadratic, Curve:Quartic, Curve:RectangularHyperbola1, Curve:RectangularHyperbola2, Curve:Sigmoid and 1 more
`end_use_subcategory` End-Use Subcategory	string	`General`	Any text may be used here to categorize the end-uses in the ABUPS End Uses by Subcategory table.

Referenced by 26 object types

Fan:SystemModel¶

from idfpy.models import FanSystemModel extensible

Versatile simple fan that can be used in variable air volume, constant volume, on-off cycling, two-speed or multi-speed applications. Performance at different flow rates, or speed levels, is determined using separate performance curve or table or prescribed power fractions at discrete speed levels for two-speed or multi-speed fans.

Field	Type	Default	Details
`name` Name required	string
`availability_schedule_name` Availability Schedule Name	reference		Availability schedule name for this fan. Schedule value > 0 means the fan is available. If this field is blank, the fan is always available. Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`air_inlet_node_name` Air Inlet Node Name required	string
`air_outlet_node_name` Air Outlet Node Name required	string
`design_maximum_air_flow_rate` Design Maximum Air Flow Rate required	number or `Autosize` m3/s
`speed_control_method` Speed Control Method	choice	`Discrete`	One of `Continuous`, `Discrete`
`electric_power_minimum_flow_rate_fraction` Electric Power Minimum Flow Rate Fraction	number	`0.2`	Range: ≥ 0, ≤ 1
`design_pressure_rise` Design Pressure Rise required	number Pa		Range: > 0
`motor_efficiency` Motor Efficiency	number	`0.9`	Range: > 0, ≤ 1
`motor_in_air_stream_fraction` Motor In Air Stream Fraction	number	`1.0`	0.0 means fan motor outside of air stream, 1.0 means motor inside of air stream Range: ≥ 0, ≤ 1
`design_electric_power_consumption` Design Electric Power Consumption	number or `Autosize` W	`Autosize`	Fan power consumption at maximum air flow rate. If autosized the method used to scale power is chosen in the following field
`design_power_sizing_method` Design Power Sizing Method	choice	`PowerPerFlowPerPressure`	One of `PowerPerFlow`, `PowerPerFlowPerPressure`, `TotalEfficiencyAndPressure`
`electric_power_per_unit_flow_rate` Electric Power Per Unit Flow Rate	number W/(m3/s)
`electric_power_per_unit_flow_rate_per_unit_pressure` Electric Power Per Unit Flow Rate Per Unit Pressure	number W/((m3/s)-Pa)	`1.66667`
`fan_total_efficiency` Fan Total Efficiency	number	`0.7`	Range: > 0, ≤ 1
`electric_power_function_of_flow_fraction_curve_name` Electric Power Function of Flow Fraction Curve Name	reference		independent variable is normalized flow rate, current flow divided by Design Maximum Air Flow Rate. dependent variable is modification factor multiplied by Design Power Consumption. This field is required if Speed Control Method is set to Continuous or if the Number of Speeds is greater than 1 and Speed Electric Power Fraction fields are not used. Names a Curve:Cubic, Curve:DoubleExponentialDecay, Curve:Exponent, Curve:ExponentialDecay, Curve:ExponentialSkewNormal, Curve:Functional:PressureDrop, Curve:Linear, Curve:Quadratic, Curve:Quartic, Curve:RectangularHyperbola1, Curve:RectangularHyperbola2, Curve:Sigmoid and 1 more
`night_ventilation_mode_pressure_rise` Night Ventilation Mode Pressure Rise	number Pa		Total system fan pressure rise at the fan when in night mode using AvailabilityManager:NightVentilation
`night_ventilation_mode_flow_fraction` Night Ventilation Mode Flow Fraction	number		Fraction of Design Maximum Air Flow Rate to use when in night mode using AvailabilityManager:NightVentilation Range: ≥ 0, ≤ 1
`motor_loss_zone_name` Motor Loss Zone Name	reference		optional, if used fan motor heat losses that not added to air stream are transferred to zone as internal gains Names a Zone
`motor_loss_radiative_fraction` Motor Loss Radiative Fraction	number		optional. If zone identified in previous field then this determines the split between convection and radiation for the fan motor's skin losses Range: ≥ 0, ≤ 1
`end_use_subcategory` End-Use Subcategory	string	`General`	Any text may be used here to categorize the end-uses in the ABUPS End Uses by Subcategory table.
`number_of_speeds` Number of Speeds	integer	`1`	number of different speed levels available when Speed Control Method is set to Discrete Speed need to be arranged in increasing order in remaining field sets. If set to 1, or omitted, and Speed Control Method is Discrete then constant fan speed is the design maximum.
`speed_fractions`	list		Each item: `speed_flow_fraction`, `speed_electric_power_fraction`

Referenced by 27 object types

AirLoopHVAC:DedicatedOutdoorAirSystem, AirLoopHVAC:ExhaustSystem, AirLoopHVAC:OutdoorAirSystem:EquipmentList, AirLoopHVAC:UnitaryHeatCool:VAVChangeoverBypass, AirLoopHVAC:UnitarySystem, AirTerminal:SingleDuct:ParallelPIU:Reheat, AirTerminal:SingleDuct:SeriesPIU:Reheat, AirTerminal:SingleDuct:VAV:Reheat:VariableSpeedFan, AirflowNetwork:Distribution:Component:Fan, Branch, Dehumidifier:Desiccant:NoFans, Dehumidifier:Desiccant:System, FaultModel:Fouling:AirFilter, WaterHeater:HeatPump:PumpedCondenser, WaterHeater:HeatPump:WrappedCondenser, ZoneHVAC:EnergyRecoveryVentilator, ZoneHVAC:EvaporativeCoolerUnit, ZoneHVAC:FourPipeFanCoil, ZoneHVAC:OutdoorAirUnit, ZoneHVAC:PackagedTerminalAirConditioner, ZoneHVAC:PackagedTerminalHeatPump, ZoneHVAC:TerminalUnit:VariableRefrigerantFlow, ZoneHVAC:UnitHeater, ZoneHVAC:UnitVentilator, ZoneHVAC:VentilatedSlab, ZoneHVAC:WaterToAirHeatPump, ZoneHVAC:WindowAirConditioner

Fan:VariableVolume¶

from idfpy.models import FanVariableVolume

Variable air volume fan where the electric power input varies according to a performance curve as a function of flow fraction.

Field	Type	Default	Details
`name` Name required	string
`availability_schedule_name` Availability Schedule Name	reference		Availability schedule name for this system. Schedule value > 0 means the system is available. If this field is blank, the system is always available. Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`fan_total_efficiency` Fan Total Efficiency	number	`0.7`	Range: > 0, ≤ 1
`pressure_rise` Pressure Rise required	number Pa
`maximum_flow_rate` Maximum Flow Rate	number or `Autosize` m3/s
`fan_power_minimum_flow_rate_input_method` Fan Power Minimum Flow Rate Input Method	choice	`Fraction`	One of `FixedFlowRate`, `Fraction`
`fan_power_minimum_flow_fraction` Fan Power Minimum Flow Fraction	number	`0.25`	Range: ≥ 0, ≤ 1
`fan_power_minimum_air_flow_rate` Fan Power Minimum Air Flow Rate	number m3/s		Range: ≥ 0
`motor_efficiency` Motor Efficiency	number	`0.9`	Range: > 0, ≤ 1
`motor_in_airstream_fraction` Motor In Airstream Fraction	number	`1.0`	0.0 means fan motor outside of air stream, 1.0 means motor inside of air stream Range: ≥ 0, ≤ 1
`fan_power_coefficient_1` Fan Power Coefficient 1	number		all Fan Power Coefficients should not be 0.0 or no fan power will be consumed. Fan Power Coefficients are specified as function of full flow rate/power Equation:
`fan_power_coefficient_2` Fan Power Coefficient 2	number
`fan_power_coefficient_3` Fan Power Coefficient 3	number
`fan_power_coefficient_4` Fan Power Coefficient 4	number
`fan_power_coefficient_5` Fan Power Coefficient 5	number
`air_inlet_node_name` Air Inlet Node Name required	string
`air_outlet_node_name` Air Outlet Node Name required	string
`end_use_subcategory` End-Use Subcategory	string	`General`	Any text may be used here to categorize the end-uses in the ABUPS End Uses by Subcategory table.

Referenced by 17 object types

AirLoopHVAC:DedicatedOutdoorAirSystem, AirLoopHVAC:OutdoorAirSystem:EquipmentList, AirLoopHVAC:UnitarySystem, AirTerminal:SingleDuct:VAV:Reheat:VariableSpeedFan, AirflowNetwork:Distribution:Component:Fan, AirflowNetwork:Distribution:Linkage, Branch, Dehumidifier:Desiccant:NoFans, Dehumidifier:Desiccant:System, FanPerformance:NightVentilation, FaultModel:Fouling:AirFilter, ZoneHVAC:EvaporativeCoolerUnit, ZoneHVAC:FourPipeFanCoil, ZoneHVAC:OutdoorAirUnit, ZoneHVAC:TerminalUnit:VariableRefrigerantFlow, ZoneHVAC:UnitHeater, ZoneHVAC:UnitVentilator

Fan:ZoneExhaust¶

from idfpy.models import FanZoneExhaust

Models a fan that exhausts air from a zone.

Field	Type	Default	Details
`name` Name required	string
`availability_schedule_name` Availability Schedule Name	reference		Availability schedule name for this system. Schedule value > 0 means the system is available. If this field is blank, the system is always available. Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`fan_total_efficiency` Fan Total Efficiency	number	`0.6`	Range: > 0, ≤ 1
`pressure_rise` Pressure Rise required	number Pa
`maximum_flow_rate` Maximum Flow Rate	number m3/s		Range: ≥ 0
`air_inlet_node_name` Air Inlet Node Name required	string
`air_outlet_node_name` Air Outlet Node Name required	string
`end_use_subcategory` End-Use Subcategory	string	`General`	Any text may be used here to categorize the end-uses in the ABUPS End Uses by Subcategory table.
`flow_fraction_schedule_name` Flow Fraction Schedule Name	reference		If field is used, then when fan runs the exhausted air flow rate is controlled to be the scheduled fraction times the Maximum Flow Rate Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`system_availability_manager_coupling_mode` System Availability Manager Coupling Mode	choice	`Coupled`	Control if fan is to be interlocked with HVAC system Availability Managers or not. One of `Coupled`, `Decoupled`
`minimum_zone_temperature_limit_schedule_name` Minimum Zone Temperature Limit Schedule Name	reference		If field is used, the exhaust fan will not run if the zone temperature is lower than this limit Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`balanced_exhaust_fraction_schedule_name` Balanced Exhaust Fraction Schedule Name	reference		Used to control fan's impact on flow at the return air node. Enter the portion of the exhaust that is balanced by simple airflows. Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules

Referenced by 5 object types

AirflowNetwork:MultiZone:Component:ZoneExhaustFan, AirflowNetwork:ZoneControl:PressureController, FanPerformance:NightVentilation, SpaceHVAC:ZoneEquipmentSplitter, ZoneHVAC:EquipmentList

FanPerformance:NightVentilation¶

from idfpy.models import FanPerformanceNightVentilation

Specifies an alternate set of performance parameters for a fan. These alternate parameters are used when a system manager (such as AvailabilityManager:NightVentilation) sets a specified flow rate. May be used with Fan:ConstantVolume, Fan:VariableVolume, Fan:ZoneExhaust, and Fan:OnOff (not Fan:ComponentModel). Fan:SystemModel has its own night ventilation settings. If the fan model senses that a fixed flow rate has been set, it will use these alternate performance parameters. It is assumed that the fan will run at a fixed speed in the alternate mode.

Field	Type	Default	Details
`fan_name` Fan Name required	reference		Names a Fan:ConstantVolume, Fan:OnOff, Fan:VariableVolume, Fan:ZoneExhaust
`fan_total_efficiency` Fan Total Efficiency required	number		Range: > 0, ≤ 1
`pressure_rise` Pressure Rise required	number Pa
`maximum_flow_rate` Maximum Flow Rate	number or `Autosize` m3/s
`motor_efficiency` Motor Efficiency required	number		Range: > 0, ≤ 1
`motor_in_airstream_fraction` Motor in Airstream Fraction	number	`1.0`	0.0 means fan motor outside of airstream 1.0 means fan motor inside of airstream Range: ≥ 0, ≤ 1