7.5.3.15 IfcCompressor

Compresseur
Kompressor

A compressor is a device that compresses a fluid typically used in a refrigeration circuit.

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 467.
Type
IfcCompressorType
IfcDistributionFlowElementType
IfcDistributionElementType

Table 467 — IfcCompressor Object Typing



Property Sets for Objects

The Property Sets for Objects concept applies to this entity as shown in Table 468.
PredefinedTypeName
 Pset_CompressorPHistory
 Pset_CompressorTypeCommon
 Pset_SoundGeneration
 Pset_ElectricalDeviceCommon
 Pset_Condition
 Pset_EnvironmentalImpactIndicators
 Pset_EnvironmentalImpactValues
 Pset_ManufacturerOccurrence
 Pset_ManufacturerTypeInformation
 Pset_PackingInstructions
 Pset_ServiceLife
 Pset_Warranty

Table 468 — IfcCompressor Property Sets for Objects



Quantity Sets

The Quantity Sets concept applies to this entity as shown in Table 469.
Name
Qto_CompressorBaseQuantities

Table 469 — IfcCompressor Quantity Sets



Material Constituents

The Material Constituents concept applies to this entity as shown in Table 470.
NameDescription
CasingMaterial from which the casing is constructed.
RefrigerantRefrigerant material.

Table 470 — IfcCompressor Material Constituents



Port Nesting

The Port Nesting concept applies to this entity as shown in Table 471.
PredefinedTypeNameFlowTypeDescription
 RefrigerantInSINKREFRIGERATIONUncompressed vapor refrigerant entering the compressor.
 RefrigerantOutSOURCEREFRIGERATIONCompressed vapor refrigerant leaving the compressor.

Table 471 — IfcCompressor Port Nesting




XSD Specification:

 <xs:element name="IfcCompressor" type="ifc:IfcCompressor" substitutionGroup="ifc:IfcFlowMovingDevice" nillable="true"/>
 <xs:complexType name="IfcCompressor">
  <xs:complexContent>
   <xs:extension base="ifc:IfcFlowMovingDevice">
    <xs:attribute name="PredefinedType" type="ifc:IfcCompressorTypeEnum" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>

EXPRESS Specification:

ENTITY IfcCompressor
SUBTYPE OF IfcFlowMovingDevice;
PredefinedType : OPTIONAL IfcCompressorTypeEnum;
WHERE
CorrectPredefinedType : NOT(EXISTS(PredefinedType)) OR (PredefinedType <> IfcCompressorTypeEnum.USERDEFINED) OR ((PredefinedType = IfcCompressorTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));
CorrectTypeAssigned : (SIZEOF(IsTypedBy) = 0) OR ('IFCHVACDOMAIN.IFCCOMPRESSORTYPE' 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 IfcCompressorType is associated), or the inherited attribute ObjectType shall be provided, if the PredefinedType is set to USERDEFINED.
CorrectTypeAssigned : Either there is no compressor type object associated, i.e. the IsTypedBy inverse relationship is not provided, or the associated type object has to be of type IfcCompressorType.

Inheritance Graph:

ENTITY IfcCompressor
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 IfcFlowMovingDevice
ENTITY IfcCompressor
PredefinedType : OPTIONAL IfcCompressorTypeEnum;
END_ENTITY;

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