IFC 4.3.1.0 (IFC4X3_ADD1) development

7.5.4.14 Pset_ChillerTypeCommon

7.5.4.14.1 Semantic definition

Chiller type common attributes.

7.5.4.14.2 Applicable entities

7.5.4.14.3 Properties

Name Property Type Data Type Description
Reference IfcPropertySingleValue IfcIdentifier

Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as "construction type". It should be provided as an alternative to the name of the "object type", if the software does not support object types and no classification reference to a recognized classification system used.

Status IfcPropertyEnumeratedValue PEnum_ElementStatus

Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as "New" - element designed as new addition, "Existing" - element exists and remains, "Demolish" - element existed but is to be demolished, "Temporary" - element will exists only temporary (like a temporary support structure).

ChillerCapacity IfcPropertySingleValue IfcPowerMeasure

Nominal cooling capacity of chiller at standardized conditions as defined by the agency having jurisdiction.

NominalEfficiency IfcPropertySingleValue IfcPositiveRatioMeasure

Nominal object efficiency under nominal conditions.

NominalCondensingTemperature IfcPropertySingleValue IfcThermodynamicTemperatureMeasure

Chiller condensing temperature.

NominalEvaporatingTemperature IfcPropertySingleValue IfcThermodynamicTemperatureMeasure

Chiller evaporating temperature.

NominalHeatRejectionRate IfcPropertySingleValue IfcPowerMeasure

Sum of the refrigeration effect and the heat equivalent of the power input to the compressor.

NominalPowerConsumption IfcPropertySingleValue IfcPowerMeasure

Nominal total power consumption.

CapacityCurve IfcPropertyTableValue IfcPowerMeasure/IfcThermodynamicTemperatureMeasure

Chiller cooling capacity is a function of condensing temperature and evaporating temperature, data is in table form, Capacity = f (TempCon, TempEvp), capacity = a1+b1*Tei+c1*Tei\^2+d1*Tci+e1*Tci\^2+f1*Tei*Tci. This table uses multiple input variables; to represent, both DefiningValues and DefinedValues lists are null and IfcTable is attached using IfcPropertyConstraintRelationship and IfcMetric. Columns are specified in the following order: 1.IfcPowerMeasure:Capacity 2.IfcThermodynamicTemperatureMeasure:CondensingTemperature 3.IfcThermodynamicTemperatureMeasure:EvaporatingTemperature

CoefficientOfPerformanceCurve IfcPropertyTableValue IfcReal/IfcThermodynamicTemperatureMeasure

Chiller coefficient of performance (COP) is function of condensing temperature and evaporating temperature, data is in table form, COP= f (TempCon, TempEvp), COP = a2+b2*Tei+c2*Tei\^2+d2*Tci+e2*Tci\^2+f2*Tei*Tci. This table uses multiple input variables; to represent, both DefiningValues and DefinedValues lists are null and IfcTable is attached using IfcPropertyConstraintRelationship and IfcMetric. Columns are specified in the following order: 1.IfcPositiveRatioMeasure:CoefficientOfPerformance 2.IfcThermodynamicTemperatureMeasure:CondensingTemperature 3.IfcThermodynamicTemperatureMeasure:EvaporatingTemperature

FullLoadRatioCurve IfcPropertyTableValue IfcNormalisedRatioMeasure/IfcPositiveRatioMeasure

Ratio of actual power to full load power as a quadratic function of part load, at certain condensing and evaporating temperature, FracFullLoadPower = f ( PartLoadRatio).

Table 7.5.4.14.A

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7.5.4.14.4 Changelog

7.5.4.14.4.1 IFC4

  • applicability, IfcChiller
  • property, CapacityCurve
  • property, CoefficientOfPerformanceCurve
  • property, FullLoadRatioCurve
  • property, Reference
  • property, Status
  • applicability, IfcChillerType
  • property NominalEfficiency, Changed from "single IfcReal" to "single IfcPositiveRatioMeasure"

7.5.4.14.4.2 IFC4.3_DEV_9f90c1f0

  • applicability, IfcChillerType
  • property, ChillerCapacity
  • property, NominalCapacity