6.2.4.1 Pset_AirSideSystemInformation

6.2.4.1.1 Semantic definition

Attributes that apply to an air side HVAC system.

6.2.4.1.2 Applicable entities

6.2.4.1.3 Properties

Name	Property Type	Data Type	Description
Description	IfcPropertySingleValue	IfcText	The Description of the object.
AirSideSystemType	IfcPropertyEnumeratedValue	PEnum_AirSideSystemType	This enumeration specifies the basic types of possible air side systems (e.g., Constant Volume, Variable Volume, etc.).
AirSideSystemDistributionType	IfcPropertyEnumeratedValue	PEnum_AirSideSystemDistributionType	This enumeration defines the basic types of air side systems (e.g., SingleDuct, DualDuct, Multizone, etc.).
TotalAirFlow	IfcPropertySingleValue	IfcVolumetricFlowRateMeasure	No description available.
EnergyGainTotal	IfcPropertySingleValue	IfcPowerMeasure	The total amount of energy gains for the spaces served by the system during the peak cooling conditions, plus any system-level total energy gains.
AirFlowSensible	IfcPropertySingleValue	IfcVolumetricFlowRateMeasure	No description available.
EnergyGainSensible	IfcPropertySingleValue	IfcPowerMeasure	The sum of total energy gains for the spaces served by the system during the peak cooling conditions, plus any system-level sensible energy gains.
EnergyLoss	IfcPropertySingleValue	IfcPowerMeasure	The sum of energy losses for the spaces served by the system during the peak heating conditions.
InfiltrationDiversitySummer	IfcPropertySingleValue	IfcPositiveRatioMeasure	Diversity factor for Summer infiltration.
InfiltrationDiversityWinter	IfcPropertySingleValue	IfcPositiveRatioMeasure	Diversity factor for Winter infiltration.
ApplianceDiversity	IfcPropertySingleValue	IfcPositiveRatioMeasure	Diversity of appliance load.
HeatingTemperatureDelta	IfcPropertySingleValue	IfcThermodynamicTemperatureMeasure	Heating temperature difference for calculating space air flow rates.
CoolingTemperatureDelta	IfcPropertySingleValue	IfcThermodynamicTemperatureMeasure	Cooling temperature difference for calculating space air flow rates.
Ventilation	IfcPropertySingleValue	IfcVolumetricFlowRateMeasure	Required outside air ventilation.
FanPower	IfcPropertySingleValue	IfcPowerMeasure	Fan motor loads contributing to the cooling load.

Table 6.2.4.1.A

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6.2.4.1.4 Changelog

6.2.4.1.4.1 IFC4

applicability, IfcSpace
applicability, IfcSpatialZone
applicability, IfcZone
applicability, IfcSpatialStructureElement
applicability, IfcSystem
property ApplianceDiversity, Changed from "single IfcPositiveRatioMeasure " to "single IfcPositiveRatioMeasure"
property CoolingTemperatureDelta, Changed from "single IfcThermodynamicTemperatureMeasure " to "single IfcThermodynamicTemperatureMeasure"
property HeatingTemperatureDelta, Changed from "single IfcThermodynamicTemperatureMeasure " to "single IfcThermodynamicTemperatureMeasure"
property InfiltrationDiversitySummer, Changed from "single IfcPositiveRatioMeasure " to "single IfcPositiveRatioMeasure"
property InfiltrationDiversityWinter, Changed from "single IfcPositiveRatioMeasure " to "single IfcPositiveRatioMeasure"
property LightingDiversity, Changed from "single IfcPositiveRatioMeasure " to "single IfcPositiveRatioMeasure"
property LoadSafetyFactor, Changed from "single IfcPositiveRatioMeasure " to "single IfcPositiveRatioMeasure"

6.2.4.1.4.2 IFC4.3_ADD2

applicability, IfcSpatialElement
property, AirFlowSensible
property, TotalAirFlow
applicability, IfcSpace
property, AirflowSensible
property, LightingDiversity
property, LoadSafetyFactor
property, Name
property, TotalAirflow
property Description, Changed from "single IfcLabel" to "single IfcText"