Room Air Models¶

17 object types from idfpy.models.room_air · EnergyPlus 26.2

Object	Summary
RoomAir:Node	Define an air node for some types of nodal room air models
RoomAir:Node:AirflowNetwork	define an air node for some types of nodal air models
RoomAir:Node:AirflowNetwork:AdjacentSurfaceList
RoomAir:Node:AirflowNetwork:HVACEquipment	define the zone equipment associated with one particular RoomAir:Node
RoomAir:Node:AirflowNetwork:InternalGains	define the internal gains that are associated with one particular RoomAir:Node
RoomAir:TemperaturePattern:ConstantGradient	Used to model room air with a fixed temperature gradient in the vertical direction.
RoomAir:TemperaturePattern:NondimensionalHeight	Defines a distribution pattern for air temperatures relative to the current mean air temperature as a …
RoomAir:TemperaturePattern:SurfaceMapping	Defines a distribution pattern for the air temperatures adjacent to individual surfaces.
RoomAir:TemperaturePattern:TwoGradient	Used to model room air with two temperature gradients in the vertical direction.
RoomAir:TemperaturePattern:UserDefined	Used to explicitly define temperature patterns that are to be applied to the mean air temperature within a …
RoomAirModelType	Selects the type of room air model to be used in a given zone.
RoomAirSettings:AirflowNetwork	RoomAir modeling using Airflow pressure network solver
RoomAirSettings:CrossVentilation	This UCSD Cross Ventilation Room Air Model provides a simple model for heat transfer and vertical temperature …
RoomAirSettings:OneNodeDisplacementVentilation	The Mundt model for displacement ventilation
RoomAirSettings:ThreeNodeDisplacementVentilation	The UCSD model for Displacement Ventilation
RoomAirSettings:UnderFloorAirDistributionExterior	Applicable to exterior spaces that are served by an underfloor air distribution system.
RoomAirSettings:UnderFloorAirDistributionInterior	This Room Air Model is applicable to interior spaces that are served by an underfloor air distribution system.

RoomAir:Node¶

from idfpy.models import RoomAirNode

Define an air node for some types of nodal room air models

Field	Type	Details
`name` Name	string
`node_type` Node Type required	choice	One of `Ceiling`, `Control`, `Floor`, `Inlet`, `MundtRoom`, `Return`
`zone_name` Zone Name required	reference	Names a Zone
`height_of_nodal_control_volume_center` Height of Nodal Control Volume Center required	number m
`surface_1_name` Surface 1 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_2_name` Surface 2 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_3_name` Surface 3 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_4_name` Surface 4 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_5_name` Surface 5 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_6_name` Surface 6 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_7_name` Surface 7 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_8_name` Surface 8 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_9_name` Surface 9 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_10_name` Surface 10 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_11_name` Surface 11 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_12_name` Surface 12 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_13_name` Surface 13 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_14_name` Surface 14 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_15_name` Surface 15 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_16_name` Surface 16 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_17_name` Surface 17 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_18_name` Surface 18 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_19_name` Surface 19 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_20_name` Surface 20 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more
`surface_21_name` Surface 21 Name	reference	Names a BuildingSurface:Detailed, Ceiling:Adiabatic, Ceiling:Interzone, Door, Door:Interzone, FenestrationSurface:Detailed, Floor:Adiabatic, Floor:Detailed, Floor:GroundContact, Floor:Interzone, GlazedDoor, GlazedDoor:Interzone and 10 more

Referenced by 2 object types

ElectricEquipment:ITE:AirCooled, ElectricEquipment:ITE:AirCooled:Instance

RoomAir:Node:AirflowNetwork¶

from idfpy.models import RoomAirNodeAirflowNetwork

define an air node for some types of nodal air models

Field	Type	Details
`name` Name	string
`zone_name` Zone Name required	reference	Names a Zone
`fraction_of_zone_air_volume` Fraction of Zone Air Volume	number	Range: ≥ 0, ≤ 1
`roomair_node_airflownetwork_adjacentsurfacelist_name` RoomAir:Node:AirflowNetwork:AdjacentSurfaceList Name	reference	Names a RoomAir:Node:AirflowNetwork:AdjacentSurfaceList
`roomair_node_airflownetwork_internalgains_name` RoomAir:Node:AirflowNetwork:InternalGains Name	reference	Names a RoomAir:Node:AirflowNetwork:InternalGains
`roomair_node_airflownetwork_hvacequipment_name` RoomAir:Node:AirflowNetwork:HVACEquipment Name	reference	Names a RoomAir:Node:AirflowNetwork:HVACEquipment

Referenced by 2 object types

AirflowNetwork:IntraZone:Node, RoomAirSettings:AirflowNetwork

RoomAir:Node:AirflowNetwork:AdjacentSurfaceList¶

from idfpy.models import RoomAirNodeAirflowNetworkAdjacentSurfaceList extensible

Field	Type	Default	Details
`name` Name	string
`surfaces`	list		Each item: `surface_name`

Referenced by 1 object types

RoomAir:Node:AirflowNetwork

RoomAir:Node:AirflowNetwork:HVACEquipment¶

from idfpy.models import RoomAirNodeAirflowNetworkHVACEquipment extensible

define the zone equipment associated with one particular RoomAir:Node

Field	Type	Default	Details
`name` Name	string
`equipment_fractions`	list		Each item: `zonehvac_or_air_terminal_equipment_object_type`, `zonehvac_or_air_terminal_equipment_object_name`, `fraction_of_output_or_supply_air_from_hvac_equipment`, `fraction_of_input_or_return_air_to_hvac_equipment`

Referenced by 1 object types

RoomAir:Node:AirflowNetwork

RoomAir:Node:AirflowNetwork:InternalGains¶

from idfpy.models import RoomAirNodeAirflowNetworkInternalGains extensible

define the internal gains that are associated with one particular RoomAir:Node

Field	Type	Default	Details
`name` Name	string
`gains`	list		Each item: `internal_gain_object_type`, `internal_gain_object_name`, `fraction_of_gains_to_node`

Referenced by 1 object types

RoomAir:Node:AirflowNetwork

RoomAir:TemperaturePattern:ConstantGradient¶

from idfpy.models import RoomAirTemperaturePatternConstantGradient

Used to model room air with a fixed temperature gradient in the vertical direction. Used in combination with RoomAir:TemperaturePattern:UserDefined.

Field	Type	Details
`room_air_temperature_pattern_constant_gradient_name` Room Air Temperature Pattern Constant Gradient Name required	string
`control_integer_for_pattern_control_schedule_name` Control Integer for Pattern Control Schedule Name required	integer	reference this entry in Schedule Name
`thermostat_offset` Thermostat Offset	number deltaC	= (Temp at thermostat- Mean Air Temp)
`return_air_offset` Return Air Offset	number deltaC	= (Tleaving - Mean Air Temp )
`exhaust_air_offset` Exhaust Air Offset	number deltaC	= (Texhaust - Mean Air Temp) deg C
`temperature_gradient` Temperature Gradient	number K/m	Slope of temperature change in vertical direction

RoomAir:TemperaturePattern:NondimensionalHeight¶

from idfpy.models import RoomAirTemperaturePatternNondimensionalHeight extensible

Defines a distribution pattern for air temperatures relative to the current mean air temperature as a function of height. The height, referred to as Zeta, is nondimensional by normalizing with the zone ceiling height. Used in combination with RoomAir:TemperaturePattern:UserDefined.

Field	Type	Details
`name` Name required	string
`control_integer_for_pattern_control_schedule_name` Control Integer for Pattern Control Schedule Name required	integer	this value should appear in as a schedule value
`thermostat_offset` Thermostat Offset	number deltaC	= (Temp at thermostat- Mean Air Temp)
`return_air_offset` Return Air Offset	number deltaC	= (Temp leaving - Mean Air Temp ) deg C
`exhaust_air_offset` Exhaust Air Offset	number deltaC	= (Temp exhaust - Mean Air Temp) deg C the remaining fields have pairs that describe the relative temperature pattern in the vertical direction of a zone Zeta is the nondimensional height (in z-direction). on [0..1] DeltaTai = (Tai - MAT) in units of deg. C relative deg C on [-10.0 .. 20.0 ]
`pairs`	list	Each item: `pair_zeta_nondimensional_height`, `pair_delta_adjacent_air_temperature` (deltaC)

RoomAir:TemperaturePattern:SurfaceMapping¶

from idfpy.models import RoomAirTemperaturePatternSurfaceMapping extensible

Defines a distribution pattern for the air temperatures adjacent to individual surfaces. This allows controlling the adjacent air temperature on a surface-by-surface basis rather than by height. This allows modeling different adjacent air temperatures on the opposite sides of the zone. Used in combination with RoomAir:TemperaturePattern:UserDefined.

Field	Type	Details
`name` Name required	string
`control_integer_for_pattern_control_schedule_name` Control Integer for Pattern Control Schedule Name required	integer	reference this entry in schedule
`thermostat_offset` Thermostat Offset	number deltaC	= (Temp at thermostat- Mean Air Temp)
`return_air_offset` Return Air Offset	number deltaC	= (Tleaving - Mean Air Temp ) deg C
`exhaust_air_offset` Exhaust Air Offset	number deltaC	= (Texhaust - Mean Air Temp) deg C
`surface_deltas`	list	Each item: `surface_name_pair`, `delta_adjacent_air_temperature_pair` (deltaC)

RoomAir:TemperaturePattern:TwoGradient¶

from idfpy.models import RoomAirTemperaturePatternTwoGradient

Used to model room air with two temperature gradients in the vertical direction. Used in combination with RoomAir:TemperaturePattern:UserDefined.

Field	Type	Details
`room_air_temperature_pattern_two_gradient_name` Room Air Temperature Pattern Two Gradient Name required	string
`control_integer_for_pattern_control_schedule_name` Control Integer for Pattern Control Schedule Name required	integer	reference this entry in Schedule Name
`thermostat_height` Thermostat Height	number m	= Distance from floor of zone
`return_air_height` Return Air Height	number m	= Distance from floor of zone
`exhaust_air_height` Exhaust Air Height	number m	= Distance from floor of zone
`temperature_gradient_lower_bound` Temperature Gradient Lower Bound	number K/m	Slope of temperature change in vertical direction
`temperature_gradient_upper_bound` Temperature Gradient Upper Bound	number K/m	Slope of temperature change in vertical direction
`gradient_interpolation_mode` Gradient Interpolation Mode	choice	One of `OutdoorDryBulbTemperature`, `SensibleCoolingLoad`, `SensibleHeatingLoad`, `ZoneAndOutdoorTemperatureDifference`, `ZoneDryBulbTemperature`
`upper_temperature_bound` Upper Temperature Bound	number C
`lower_temperature_bound` Lower Temperature Bound	number C
`upper_heat_rate_bound` Upper Heat Rate Bound	number W
`lower_heat_rate_bound` Lower Heat Rate Bound	number W

RoomAir:TemperaturePattern:UserDefined¶

from idfpy.models import RoomAirTemperaturePatternUserDefined

Used to explicitly define temperature patterns that are to be applied to the mean air temperature within a thermal zone. Used with RoomAirModelType = UserDefined.

Field	Type	Details
`name` Name required	string
`zone_name` Zone Name required	reference	Names a Zone
`availability_schedule_name` Availability Schedule Name	reference	Availability schedule name for this model. Schedule value > 0 means the model is active. Schedule value = 0 means the model is inactive and the zone will be modeled as fully mixed (Mixing). If this field is blank, the model is always active. Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`pattern_control_schedule_name` Pattern Control Schedule Name required	reference	The schedule should contain integer values that correspond to unique Control Integer fields in one of the RoomAir:TemperaturePattern:* objects. Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules

RoomAirModelType¶

from idfpy.models import RoomAirModelType

Selects the type of room air model to be used in a given zone. If no RoomAirModelType object is specified then the default Mixing model (all zone air at the same temperature) will be used.

Field	Type	Default	Details
`name` Name required	string
`zone_name` Zone Name required	reference		Names a Zone
`room_air_modeling_type` Room-Air Modeling Type	choice	`Mixing`	Mixing = Complete mixing air model UserDefined = UserDefined Room Air Temperature Patterns needs RoomAir:TemperaturePattern:UserDefined object referencing this Zone OneNodeDisplacementVentilation = Mundt roomair model for displacement ventilation with single floor air node needs RoomAirSettings:OneNodeDisplacementVentilation object referencing this Zone ThreeNodeDisplacementVentilation = RoomAir modeling using UCSD three-node displacement ventilation model needs RoomAirSettings:ThreeNodeDisplacementVentilation object referencing this Zone CrossVentilation = RoomAir modeling using UCSD two-zone cross ventilation model needs RoomAirSettings:CrossVentilation object referencing this Zone UnderFloorAirDistributionInterior = 2-Node UFAD model for interior zones needs RoomAirSettings:UnderFloorAirDistributionInterior object referencing this Zone UnderFloorAirDistributionExterior = RoomAir modeling using 2-Node UFAD model for exterior zones needs RoomAirSettings:UnderFloorAirDistributionExterior object referencing this Zone AirflowNetwork = RoomAir modeling using AirflowNetwork needs RoomAirSettings:AirflowNetwork object referencing this Zone One of `AirflowNetwork`, `CrossVentilation`, `Mixing`, `OneNodeDisplacementVentilation`, `ThreeNodeDisplacementVentilation`, `UnderFloorAirDistributionExterior`, `UnderFloorAirDistributionInterior`, `UserDefined`
`air_temperature_coupling_strategy` Air Temperature Coupling Strategy	choice	`Direct`	One of `Direct`, `Indirect`

RoomAirSettings:AirflowNetwork¶

from idfpy.models import RoomAirSettingsAirflowNetwork extensible

RoomAir modeling using Airflow pressure network solver

Field	Type	Details
`name` Name required	string
`zone_name` Zone Name required	reference	Name of Zone being described. Any existing zone name Names a Zone
`control_point_roomairflownetwork_node_name` Control Point RoomAirflowNetwork:Node Name	reference	Names a RoomAir:Node:AirflowNetwork
`nodes`	list	Each item: `roomairflownetwork_node_name`

RoomAirSettings:CrossVentilation¶

from idfpy.models import RoomAirSettingsCrossVentilation

This UCSD Cross Ventilation Room Air Model provides a simple model for heat transfer and vertical temperature profile prediction in cross ventilated rooms. The model distinguishes two regions in the room, the main jet region and the recirculations, and predicts characteristic airflow velocities and average air temperatures. Used with RoomAirModelType = CrossVentilation.

Field	Type	Details
`zone_name` Zone Name required	reference	Name of Zone being described. Any existing zone name Names a Zone
`gain_distribution_schedule_name` Gain Distribution Schedule Name required	reference	Distribution of the convective heat gains between the jet and recirculation zones. 0<= Accepted Value <= 1. In the CV model 1 means all convective gains in the jet region. Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`airflow_region_used_for_thermal_comfort_evaluation` Airflow Region Used for Thermal Comfort Evaluation	choice	Required field whenever thermal comfort is predicted defines Air temperature and Airflow velocity that will be used in the Fanger model conditions must refer to one of the two regions: jet or recirculation One of `Jet`, `Recirculation`

RoomAirSettings:OneNodeDisplacementVentilation¶

from idfpy.models import RoomAirSettingsOneNodeDisplacementVentilation

The Mundt model for displacement ventilation

Field	Type	Details
`zone_name` Zone Name required	reference	Names a Zone
`fraction_of_convective_internal_loads_added_to_floor_air` Fraction of Convective Internal Loads Added to Floor Air	number	Range: ≥ 0, ≤ 1
`fraction_of_infiltration_internal_loads_added_to_floor_air` Fraction of Infiltration Internal Loads Added to Floor Air	number	Range: ≥ 0, ≤ 1

RoomAirSettings:ThreeNodeDisplacementVentilation¶

from idfpy.models import RoomAirSettingsThreeNodeDisplacementVentilation

The UCSD model for Displacement Ventilation

Field	Type	Default	Details
`zone_name` Zone Name required	reference		Name of Zone being described. Any existing zone name Names a Zone
`gain_distribution_schedule_name` Gain Distribution Schedule Name required	reference		Distribution of the convective heat gains between the occupied and mixed zones. 0<= Accepted Value <= 1. In the DV model 1 means all convective gains in the lower layer. Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`number_of_plumes_per_occupant` Number of Plumes per Occupant	number	`1.0`	Used only in the UCSD displacement ventilation model. Effective number of separate plumes per occupant in the occupied zone. Plumes that merge together in the occupied zone count as one. Range: > 0
`thermostat_height` Thermostat Height	number m	`1.1`	Height of thermostat/temperature control sensor above floor Range: > 0
`comfort_height` Comfort Height	number m	`1.1`	Height at which air temperature is calculated for comfort purposes Range: > 0
`temperature_difference_threshold_for_reporting` Temperature Difference Threshold for Reporting	number deltaC	`0.4`	Minimum temperature difference between predicted upper and lower layer temperatures above which DV auxiliary outputs are calculated. These outputs are 'DV Transition Height', 'DV Fraction Min Recommended Flow Rate' 'DV Average Temp Gradient' and 'DV Maximum Temp Gradient'. They are set to negative values when the temperature difference is less than the threshold and the output 'DV Zone Is Mixed' is set to 1 Range: ≥ 0

RoomAirSettings:UnderFloorAirDistributionExterior¶

from idfpy.models import RoomAirSettingsUnderFloorAirDistributionExterior

Applicable to exterior spaces that are served by an underfloor air distribution system. The dominant sources of heat gain should be from people, equipment, and other localized sources located in the occupied part of the room, as well as convective gain coming from a warm window. Used with RoomAirModelType = CrossVentilation.

Field	Type	Default	Details
`zone_name` Zone Name required	reference		Name of Zone being described. Any existing zone name Names a Zone
`number_of_diffusers_per_zone` Number of Diffusers per Zone	number or `Autocalculate`	`Autocalculate`
`power_per_plume` Power per Plume	number or `Autocalculate` W	`Autocalculate`
`design_effective_area_of_diffuser` Design Effective Area of Diffuser	number or `Autocalculate` m2	`Autocalculate`
`diffuser_slot_angle_from_vertical` Diffuser Slot Angle from Vertical	number or `Autocalculate` deg	`Autocalculate`
`thermostat_height` Thermostat Height	number m	`1.2`	Height of thermostat/temperature control sensor above floor Range: > 0
`comfort_height` Comfort Height	number m	`1.1`	Height at which Air temperature is calculated for comfort purposes Range: > 0
`temperature_difference_threshold_for_reporting` Temperature Difference Threshold for Reporting	number deltaC	`0.4`	Minimum temperature difference between upper and lower layer temperatures above which UFAD auxiliary outputs are calculated. These outputs are 'UF Transition Height' and 'UF Average Temp Gradient'. They are set to zero values when the temperature difference is less than the threshold and the output 'UF Zone Is Mixed' is set to 1 Range: ≥ 0
`floor_diffuser_type` Floor Diffuser Type	choice	`Swirl`	One of `Custom`, `HorizontalSwirl`, `LinearBarGrille`, `Swirl`, `VariableArea`
`transition_height` Transition Height	number or `Autocalculate` m	`1.7`	User-specified height above floor of boundary between occupied and upper subzones
`coefficient_a_in_formula_kc_a_gamma_b_c_d_gamma_e_gamma_2` Coefficient A in formula Kc = AGammaB + C + DGamma + EGamma*2	number or `Autocalculate`	`Autocalculate`	Kc is the fraction of the total zone load attributable to the lower subzone
`coefficient_b_in_formula_kc_a_gamma_b_c_d_gamma_e_gamma_2` Coefficient B in formula Kc = AGammaB + C + DGamma + EGamma*2	number or `Autocalculate`	`Autocalculate`	Kc is the fraction of the total zone load attributable to the lower subzone
`coefficient_c_in_formula_kc_a_gamma_b_c_d_gamma_e_gamma_2` Coefficient C in formula Kc = AGammaB + C + DGamma + EGamma*2	number or `Autocalculate`	`Autocalculate`	Kc is the fraction of the total zone load attributable to the lower subzone
`coefficient_d_in_formula_kc_a_gamma_b_c_d_gamma_e_gamma_2` Coefficient D in formula Kc = AGammaB + C + DGamma + EGamma*2	number or `Autocalculate`	`Autocalculate`	Kc is the fraction of the total zone load attributable to the lower subzone
`coefficient_e_in_formula_kc_a_gamma_b_c_d_gamma_e_gamma_2` Coefficient E in formula Kc = AGammaB + C + DGamma + EGamma*2	number or `Autocalculate`	`Autocalculate`	Kc is the fraction of the total zone load attributable to the lower subzone

RoomAirSettings:UnderFloorAirDistributionInterior¶

from idfpy.models import RoomAirSettingsUnderFloorAirDistributionInterior

This Room Air Model is applicable to interior spaces that are served by an underfloor air distribution system. The dominant sources of heat gain should be from people, equipment, and other localized sources located in the occupied part of the room. The model should be used with caution in zones which have large heat gains or losses through exterior walls or windows or which have considerable direct solar gain. Used with RoomAirModelType = UnderFloorAirDistributionInterior.

Field	Type	Default	Details
`zone_name` Zone Name required	reference		Name of Zone with underfloor air distribution Names a Zone
`number_of_diffusers` Number of Diffusers	number or `Autocalculate`	`Autocalculate`	Total number of diffusers in this zone
`power_per_plume` Power per Plume	number or `Autocalculate` W	`Autocalculate`
`design_effective_area_of_diffuser` Design Effective Area of Diffuser	number or `Autocalculate` m2	`Autocalculate`
`diffuser_slot_angle_from_vertical` Diffuser Slot Angle from Vertical	number or `Autocalculate` deg	`Autocalculate`
`thermostat_height` Thermostat Height	number m	`1.2`	Height of thermostat/temperature control sensor above floor Range: > 0
`comfort_height` Comfort Height	number m	`1.1`	Height at which air temperature is calculated for comfort purposes Range: > 0
`temperature_difference_threshold_for_reporting` Temperature Difference Threshold for Reporting	number deltaC	`0.4`	Minimum temperature difference between predicted upper and lower layer temperatures above which UFAD auxiliary outputs are calculated. These outputs are 'UF Transition Height' and 'UF Average Temp Gradient'. They are set to zero values when the temperature difference is less than the threshold and the output 'UF Zone Is Mixed' is set to 1 Range: ≥ 0
`floor_diffuser_type` Floor Diffuser Type	choice	`Swirl`	One of `Custom`, `HorizontalSwirl`, `LinearBarGrille`, `Swirl`, `VariableArea`
`transition_height` Transition Height	number or `Autocalculate` m	`1.7`	user-specified height above floor of boundary between occupied and upper subzones
`coefficient_a` Coefficient A	number or `Autocalculate`	`Autocalculate`	Coefficient A in Formula Kc = AGammaB + C + DGamma + EGamma*2 Kc is the fraction of the total zone load attributable to the lower subzone
`coefficient_b` Coefficient B	number or `Autocalculate`	`Autocalculate`	Coefficient B in Formula Kc = AGammaB + C + DGamma + EGamma*2 Kc is the fraction of the total zone load attributable to the lower subzone
`coefficient_c` Coefficient C	number or `Autocalculate`	`Autocalculate`	Coefficient C in Formula Kc = AGammaB + C + DGamma + EGamma*2 Kc is the fraction of the total zone load attributable to the lower subzone
`coefficient_d` Coefficient D	number or `Autocalculate`	`Autocalculate`	Coefficient D in Formula Kc = AGammaB + C + DGamma + EGamma*2 Kc is the fraction of the total zone load attributable to the lower subzone
`coefficient_e` Coefficient E	number or `Autocalculate`	`Autocalculate`	Coefficient E in Formula Kc = AGammaB + C + DGamma + EGamma*2 Kc is the fraction of the total zone load attributable to the lower subzone