Class Ifc4::IfcCompressor

Nested Relationships

This class is a nested type of Struct Ifc4.

Inheritance Relationships

Base Type

Class Documentation

class Ifc4::IfcCompressor : public Ifc4::IfcFlowMovingDevice

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

HISTORY New entity in IFC2x4

Type Use Definition IfcCompressor defines the occurrence of any compressor; common information about compressor types is handled by IfcCompressorType. The IfcCompressorType (if present) may establish the common type name, usage (predefined type), properties, materials, ports, composition, assignments, and representations. The IfcCompressorType is attached using the IfcRelDefinesByType objectified relationship and is accessible by the IsTypedBy inverse attribute. If the IfcCompressorType has ports or aggregated elements, such objects are reflected at the IfcCompressor occurrence using the IfcRelDefinesByObject relationship.

Property Use Definition The property sets relating to this entity are defined by IfcPropertySet and attached by the IfcRelDefinesByProperties relationship. They are accessible by the IsDefinedBy inverse attribute. Property sets may also be specified at the IfcCompressorType, defining the common property data for all occurrences of the same type. They are then accessible by the IsTypedBy inverse attribute pointing to IfcCompressorType.HasPropertySets. If both are given, then the properties directly defined at IfcCompressor override the properties defined at IfcCompressorType. Refer to the documentation at the supertype IfcFlowMovingDevice and ancestors for inherited property set definitions. The following property set definitions are applicable to this entity: Pset_CompressorPHistory (PSET_PERFORMANCEDRIVEN) Pset_CompressorTypeCommon (PSET_TYPEDRIVENOVERRIDE)

Quantity Use Definition The quantities relating to this entity are defined by IfcElementQuantity and attached by the IfcRelDefinesByProperties relationship. They are accessible by the IsDefinedBy inverse attribute. The following base quantities are defined and shall be exchanged with the IfcElementQuantity.Name = ‘BaseQuantities’. Other quantities, being subjected to local standard of measurement, may be defined with another string value assigned to Name. In this case a valid value for MethodOfMeasurement shall be provided.


Material Use Definition The material of the IfcCompressor is defined by IfcMaterialConstituentSet or as a fallback by IfcMaterial, and attached by the RelatingMaterial attribute on the IfcRelAssociatesMaterial relationship. It is accessible by the HasAssociations inverse attribute. Material information can also be given at the IfcCompressorType, defining the common attribute data for all occurrences of the same type. The following keywords for IfcMaterialConstituentSet.MaterialConstituents[n].Name shall be used:

Body: The primary material from which the object is constructed. Refrigerant: Refrigerant material.

Port Use Definition The distribution ports relating to the IfcCompressor are defined by IfcDistributionPort and attached by the IfcRelConnectsPortToElement relationship. If the compressor occurrence is defined by IfcCompressorType, then the port occurrences must reflect those defined at the IfcCompressorType using the IfcRelDefinesByObject relationship. Ports are specific to the IfcCompressor PredefinedType as follows indicated by the IfcDistributionPort Name, PredefinedType, and FlowDirection:

RefrigerantIn (REFRIGERATION, SINK): Uncompressed vapor refrigerant entering the compressor. RefrigerantOut (REFRIGERATION, SOURCE): Compressed vapor refrigerant leaving the compressor.

Figure 217 illustrates compressor port use. Figure 217 — Compressor port use

Public Types

typedef IfcTemplatedEntityList<IfcCompressor> list

Public Functions

bool hasPredefinedType() const

Whether the optional attribute PredefinedType is defined for this IfcCompressor.

::Ifc4::IfcCompressorTypeEnum::Value PredefinedType() const
void setPredefinedType(::Ifc4::IfcCompressorTypeEnum::Value v)
const IfcParse::entity &declaration() const
IfcCompressor(IfcEntityInstanceData *e)
IfcCompressor(std::string v1_GlobalId, ::Ifc4::IfcOwnerHistory *v2_OwnerHistory, boost::optional<std::string> v3_Name, boost::optional<std::string> v4_Description, boost::optional<std::string> v5_ObjectType, ::Ifc4::IfcObjectPlacement *v6_ObjectPlacement, ::Ifc4::IfcProductRepresentation *v7_Representation, boost::optional<std::string> v8_Tag, boost::optional<::Ifc4::IfcCompressorTypeEnum::Value> v9_PredefinedType)

Public Static Functions

const IfcParse::entity &Class()