7.5.3.55 IfcSpaceHeater

Radiateur
Heizkörper

Space heaters utilize a combination of radiation and/or natural convection using a heating source such as electricity, steam or hot water to heat a limited space or area. Examples of space heaters include radiators, convectors, baseboard and finned-tube heaters.

IfcUnitaryEquipment should be used for packaged units supporting a combination of heating, cooling, and/or dehumidification; IfcCoil should be used for coil-based floor heating.

HISTORY  New entity in IFC4
IFC4 CHANGE  Electric heaters formerly defined by IfcElectricHeaterType are now represented by this entity with PredefinedType set to CONVECTOR and Pset_SpaceHeaterCommon.HeatTransferDimension reflecting IfcElectricHeaterTypeEnum as follows: ELECTRICPOINTHEATER = POINT, ELECTRICCABLEHEATER = CURVE, ELECTRICMATHEATER = SURFACE.

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 568.
Type
IfcSpaceHeaterType
IfcDistributionFlowElementType
IfcDistributionElementType

Table 568 — IfcSpaceHeater Object Typing



Property Sets for Objects

The Property Sets for Objects concept applies to this entity as shown in Table 569.
PredefinedTypeName
 Pset_SpaceHeaterPHistory
 Pset_SpaceHeaterTypeCommon
CONVECTORPset_SpaceHeaterTypeConvector
RADIATORPset_SpaceHeaterTypeRadiator
 Pset_SoundGeneration
 Pset_ElectricalDeviceCommon
 Pset_Condition
 Pset_EnvironmentalImpactIndicators
 Pset_EnvironmentalImpactValues
 Pset_ManufacturerOccurrence
 Pset_ManufacturerTypeInformation
 Pset_PackingInstructions
 Pset_ServiceLife
 Pset_Warranty

Table 569 — IfcSpaceHeater Property Sets for Objects



Quantity Sets

The Quantity Sets concept applies to this entity as shown in Table 570.
Name
Qto_SpaceHeaterBaseQuantities

Table 570 — IfcSpaceHeater Quantity Sets



Material Constituents

The Material Constituents concept applies to this entity as shown in Table 571.
NameDescription
CasingMaterial from which the casing is constructed.

Table 571 — IfcSpaceHeater Material Constituents



Port Nesting

The Port Nesting concept applies to this entity as shown in Table 572.
PredefinedTypeNameFlowTypeDescription
CONVECTORPowerSINKELECTRICALReceives electrical power.
RADIATORInletSINKHEATINGWater or steam supply.
RADIATOROutletSOURCEHEATINGWater or steam return.

Table 572 — IfcSpaceHeater Port Nesting




XSD Specification:

 <xs:element name="IfcSpaceHeater" type="ifc:IfcSpaceHeater" substitutionGroup="ifc:IfcFlowTerminal" nillable="true"/>
 <xs:complexType name="IfcSpaceHeater">
  <xs:complexContent>
   <xs:extension base="ifc:IfcFlowTerminal">
    <xs:attribute name="PredefinedType" type="ifc:IfcSpaceHeaterTypeEnum" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>

EXPRESS Specification:

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

Inheritance Graph:

ENTITY IfcSpaceHeater
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 IfcFlowTerminal
ENTITY IfcSpaceHeater
PredefinedType : OPTIONAL IfcSpaceHeaterTypeEnum;
END_ENTITY;

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