7.5.3.11 IfcChiller

Refroidisseur
Kältemaschine

A chiller is a device used to remove heat from a liquid via a vapor-compression or absorption refrigeration cycle to cool a fluid, typically water or a mixture of water and glycol. The chilled fluid is then used to cool and dehumidify air in a building.

HISTORY  New entity in IFC4

Common Use Definitions

The following concepts are inherited at supertypes:

 Instance diagram

Object Typing

The Object Typing concept applies to this entity as shown in Table 456.
Type
IfcChillerType
IfcDistributionFlowElementType
IfcDistributionElementType

Table 456 — IfcChiller Object Typing



Property Sets for Objects

The Property Sets for Objects concept applies to this entity as shown in Table 457.
PredefinedTypeName
 Pset_ChillerPHistory
 Pset_ChillerTypeCommon
 Pset_SoundGeneration
 Pset_ElectricalDeviceCommon
 Pset_Condition
 Pset_EnvironmentalImpactIndicators
 Pset_EnvironmentalImpactValues
 Pset_ManufacturerOccurrence
 Pset_ManufacturerTypeInformation
 Pset_PackingInstructions
 Pset_ServiceLife
 Pset_Warranty

Table 457 — IfcChiller Property Sets for Objects



Quantity Sets

The Quantity Sets concept applies to this entity as shown in Table 458.
Name
Qto_ChillerBaseQuantities

Table 458 — IfcChiller Quantity Sets



Material Constituents

The Material Constituents concept applies to this entity as shown in Table 459.
NameDescription
CasingMaterial from which the casing is constructed.
RefrigerantRefrigerant material.

Table 459 — IfcChiller Material Constituents



Object Aggregation

The Object Aggregation concept applies to this entity as shown in Table 460.
PredefinedTypeRelatedObjectsDescription
 IfcDistributionElementChillers may aggregate distribution flow elements forming a refrigeration cycle (compressor, condenser, valve, evaporator), as well as control elements.

Table 460 — IfcChiller Object Aggregation



Port Nesting

The Port Nesting concept applies to this entity as shown in Table 461.
PredefinedTypeNameFlowTypeDescription
AIRCOOLEDPowerSINKELECTRICALReceives electrical power.
AIRCOOLEDControlSINKCONTROLControl unit accessing internal sensors and actuators.
AIRCOOLEDChilledWaterInSINKCHILLEDWATERChilled water return.
AIRCOOLEDChilledWaterOutSOURCECHILLEDWATERChilled water supply.
AIRCOOLEDVentilationInSINKVENTILATIONIncoming cooler air.
AIRCOOLEDVentilationOutSOURCEVENTILATIONOutgoing hotter air.
WATERCOOLEDPowerSINKELECTRICALReceives electrical power.
WATERCOOLEDControlSINKCONTROLControl unit accessing internal sensors and actuators.
WATERCOOLEDChilledWaterInSINKCHILLEDWATERChilled water return.
WATERCOOLEDChilledWaterOutSOURCECHILLEDWATERChilled water supply.
WATERCOOLEDCondenserWaterInSINKCONDENSERWATERIncoming cooler condenser water.
WATERCOOLEDCondenserWaterOutSOURCECONDENSERWATEROutgoing hotter condenser water.

Table 461 — IfcChiller Port Nesting




XSD Specification:

 <xs:element name="IfcChiller" type="ifc:IfcChiller" substitutionGroup="ifc:IfcEnergyConversionDevice" nillable="true"/>
 <xs:complexType name="IfcChiller">
  <xs:complexContent>
   <xs:extension base="ifc:IfcEnergyConversionDevice">
    <xs:attribute name="PredefinedType" type="ifc:IfcChillerTypeEnum" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>

EXPRESS Specification:

ENTITY IfcChiller
SUBTYPE OF IfcEnergyConversionDevice;
PredefinedType : OPTIONAL IfcChillerTypeEnum;
WHERE
CorrectPredefinedType : NOT(EXISTS(PredefinedType)) OR (PredefinedType <> IfcChillerTypeEnum.USERDEFINED) OR ((PredefinedType = IfcChillerTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));
CorrectTypeAssigned : (SIZEOF(IsTypedBy) = 0) OR ('IFCHVACDOMAIN.IFCCHILLERTYPE' IN TYPEOF(SELF\IfcObject.IsTypedBy[1].RelatingType));
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

Formal Propositions:

CorrectPredefinedType : Either the PredefinedType attribute is unset (e.g. because an IfcChillerType is associated), or the inherited attribute ObjectType shall be provided, if the PredefinedType is set to USERDEFINED.
CorrectTypeAssigned : Either there is no chiller type object associated, i.e. the IsTypedBy inverse relationship is not provided, or the associated type object has to be of type IfcChillerType.

Inheritance Graph:

ENTITY IfcChiller
ENTITY IfcRoot
GlobalId : IfcGloballyUniqueId;
OwnerHistory : OPTIONAL IfcOwnerHistory;
Name : OPTIONAL IfcLabel;
Description : OPTIONAL IfcText;
ENTITY IfcObjectDefinition
INVERSE
HasAssignments : SET OF IfcRelAssigns FOR RelatedObjects;
Nests : SET [0:1] OF IfcRelNests FOR RelatedObjects;
IsNestedBy : SET OF IfcRelNests FOR RelatingObject;
HasContext : SET [0:1] OF IfcRelDeclares FOR RelatedDefinitions;
IsDecomposedBy : SET OF IfcRelAggregates FOR RelatingObject;
Decomposes : SET [0:1] OF IfcRelAggregates FOR RelatedObjects;
HasAssociations : SET OF IfcRelAssociates FOR RelatedObjects;
ENTITY IfcObject
ObjectType : OPTIONAL IfcLabel;
INVERSE
IsDeclaredBy : SET [0:1] OF IfcRelDefinesByObject FOR RelatedObjects;
Declares : SET OF IfcRelDefinesByObject FOR RelatingObject;
IsTypedBy : SET [0:1] OF IfcRelDefinesByType FOR RelatedObjects;
IsDefinedBy : SET OF IfcRelDefinesByProperties FOR RelatedObjects;
ENTITY IfcProduct
ObjectPlacement : OPTIONAL IfcObjectPlacement;
Representation : OPTIONAL IfcProductRepresentation;
INVERSE
ReferencedBy : SET OF IfcRelAssignsToProduct FOR RelatingProduct;
ENTITY IfcElement
Tag : OPTIONAL IfcIdentifier;
INVERSE
FillsVoids : SET [0:1] OF IfcRelFillsElement FOR RelatedBuildingElement;
ConnectedTo : SET OF IfcRelConnectsElements FOR RelatingElement;
IsInterferedByElements : SET OF IfcRelInterferesElements FOR RelatedElement;
InterferesElements : SET OF IfcRelInterferesElements FOR RelatingElement;
HasProjections : SET OF IfcRelProjectsElement FOR RelatingElement;
ReferencedInStructures : SET OF IfcRelReferencedInSpatialStructure FOR RelatedElements;
HasOpenings : SET OF IfcRelVoidsElement FOR RelatingBuildingElement;
IsConnectionRealization : SET OF IfcRelConnectsWithRealizingElements FOR RealizingElements;
ProvidesBoundaries : SET OF IfcRelSpaceBoundary FOR RelatedBuildingElement;
ConnectedFrom : SET OF IfcRelConnectsElements FOR RelatedElement;
ContainedInStructure : SET [0:1] OF IfcRelContainedInSpatialStructure FOR RelatedElements;
ENTITY IfcDistributionElement
INVERSE
HasPorts : SET OF IfcRelConnectsPortToElement FOR RelatedElement;
ENTITY IfcDistributionFlowElement
INVERSE
HasControlElements : SET [0:1] OF IfcRelFlowControlElements FOR RelatingFlowElement;
ENTITY IfcEnergyConversionDevice
ENTITY IfcChiller
PredefinedType : OPTIONAL IfcChillerTypeEnum;
END_ENTITY;

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