IFC 4.3.0.1 (IFC4X3) development

7.5.4.10 Pset_BoilerTypeSteam

7.5.4.10.1 Semantic definition

Steam boiler type common attributes.

7.5.4.10.2 Applicable entities

7.5.4.10.3 Properties

Name Property Type Data Type Description
MaximumOutletPressure IfcPropertySingleValue IfcLabel

Maximum steam outlet pressure.

NominalEfficiencyTable IfcPropertyTableValue IfcNormalisedRatioMeasure/IfcThermodynamicTemperatureMeasure

The nominal efficiency of the boiler as defined by the manufacturer. For steam boilers, a function of inlet temperature versus steam pressure. Note: as two variables are used, DefiningValues and DefinedValues are null, and values are stored in IfcTable in the following order: InletTemperature(IfcThermodynamicTemperatureMeasure) and OutletTemperature(IfcThermodynamicTemperatureMeasure) in DefiningValues, and NominalEfficiency(IfcNormalisedRatioMeasure) in DefinedValues. For example, DefininfValues(InletTemp, OutletTemp), DefinedValues(null, NominalEfficiency). The IfcTable is related to IfcPropertyTableValue using IfcMetric and IfcPropertyConstraintRelationship.

HeatOutput IfcPropertyTableValue IfcEnergyMeasure/IfcThermodynamicTemperatureMeasure

Total nominal heat output as listed by the Boiler manufacturer.

For steam boilers, it is a function of inlet temperature versus steam pressure. Note: as two variables are used, DefiningValues and DefinedValues are null, and values are stored in IfcTable in the following order: InletTemperature(IfcThermodynamicTemperatureMeasure) and OutletTemperature(IfcThermodynamicTemperatureMeasure) in DefiningValues, and HeatOutput(IfcEnergyMeasure) in DefinedValues. For example, DefiningValues(InletTemp, OutletTemp), DefinedValues(null, HeatOutput). The IfcTable is related to IfcPropertyTableValue using IfcMetric and IfcPropertyConstraintRelationship.

Table 7.5.4.10.A

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7.5.4.10.4 Changelog

  • applicability, IfcBoilerType/STEAM
  • property, NominalEfficiencyTable
  • property, NominalEfficiency