7.5.4.40 Pset_DuctSegmentPHistory
7.5.4.40.1 Semantic definition
Duct segment performance history common attributes.
7.5.4.40.2 Applicable entities
7.5.4.40.3 Properties
| Name | Property Type | Data Type | Description | |
|---|---|---|---|---|
| LossCoefficient | IfcPropertyReferenceValue | IfcTimeSeries |
Dimensionless loss coefficient used for calculating fluid resistance representing the ratio of total pressure loss to velocity pressure at a referenced cross-section. |
|
| AtmosphericPressure | IfcPropertyReferenceValue | IfcTimeSeries |
Ambient atmospheric pressure. |
|
| LeakageCurveHistory | IfcPropertyReferenceValue | IfcTimeSeries |
Leakage per unit length curve versus working pressure. If a scalar is expressed then it represents LeakageClass which is flowrate per unit area at a specified pressure rating (e.g., ASHRAE Fundamentals 2001 34.16.). |
|
| FluidFlowLeakage | IfcPropertyReferenceValue | IfcTimeSeries |
Volumetric leakage flow rate. |