IFC 4.3.0.1 (IFC4X3) development

7.5.4.4 Pset_AirTerminalPHistory

7.5.4.4.1 Semantic definition

Air terminal performance history common attributes.

7.5.4.4.2 Applicable entities

7.5.4.4.3 Properties

Name Property Type Data Type Description
AirFlowRateHistory IfcPropertyReferenceValue IfcTimeSeries

Volumetric flow rate.

NeckAirVelocity IfcPropertyReferenceValue IfcTimeSeries

Air velocity at the neck.

SupplyAirTemperatureHeating IfcPropertyReferenceValue IfcTimeSeries

Supply air temperature in heating mode.

SupplyAirTemperatureCooling IfcPropertyReferenceValue IfcTimeSeries

Supply air temperature in cooling mode.

PressureDrop IfcPropertyReferenceValue IfcTimeSeries

Pressure drop.

Drop in total pressure between inlet and outlet at nominal air-flow rate.

InductionRatio IfcPropertyTableValue IfcLengthMeasure/IfcReal

Induction ratio versus distance from the diffuser and its discharge direction; induction ratio (or entrainment ratio) is the ratio of the volumetric flow rate in the jet to the volumetric flow rate at the air terminal.

CenterlineAirVelocity IfcPropertyTableValue IfcLengthMeasure/IfcLinearVelocityMeasure

Centerline air velocity versus distance from the diffuser and temperature differential; a function of distance from diffuser and temperature difference between supply air and room air.

Table 7.5.4.4.A

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7.5.4.4.4 Changelog

  • property, AirFlowRateHistory
  • property, AirFlowRate