7.3.3.1 IfcBoiler

Chaudière
Heizkessel

A boiler is a closed, pressure-rated vessel in which water or other fluid is heated using an energy source such as natural gas, heating oil, or electricity. The fluid in the vessel is then circulated out of the boiler for use in various processes or heating applications.

IfcBoiler is a vessel solely used for heating of water or other fluids. Storage vessels, such as for drinking water storage are considered as tanks and use the IfcTank entity.

HISTORY  New entity in IFC4

Plumbing System Design

 Instance diagram

Identity

The Identity concept applies to this entity.

Exchange
Import R -
Export R R R R R - R R R


Object Typing

The Object Typing concept applies to this entity as shown in Table 73.
Type
IfcBoilerType

Table 73 — IfcBoiler Object Typing

Exchange
Import - -
Export O - O O - R O R


Properties for Occurrences

The Properties for Occurrences concept applies to this entity as shown in Table 74.
PredefinedTypeName
 Pset_BoilerPHistory
 Pset_BoilerTypeCommon
STEAMPset_BoilerTypeSteam
WATERPset_BoilerTypeWater

Table 74 — IfcBoiler Properties for Occurrences

Exchange
Import R R -
Export R R R R - R R R


Quantity Sets

The Quantity Sets concept applies to this entity as shown in Table 75.
Exchange
Import
Export O


Ports

The Ports concept applies to this entity as shown in Table 76.
PredefinedTypeNameFlowTypeDescription
WATERGasSINKGASGas inlet for burner.
WATERExhaustSOURCEEXHAUSTExhaust sent to outside.
WATERColdWaterSINKDOMESTICCOLDWATERCold water to be heated.
WATERHotWaterSOURCEDOMESTICHOTWATERHot water heated.

Table 76 — IfcBoiler Ports

Exchange
Import R -
Export R R R R R - R R R


Body Geometry

The Body Geometry concept applies to this entity as shown in Table 77.
RepresentationTypeGeometry
MappedRepresentationIfcMappedItem

Table 77 — IfcBoiler Body Geometry

Exchange
Import
Export R R R R


Clearance Geometry

The Clearance Geometry concept applies to this entity.

Exchange
Import
Export O O O O


XSD Specification:

 <xs:element name="IfcBoiler" type="ifc:IfcBoiler" substitutionGroup="ifc:IfcEnergyConversionDevice" nillable="true"/>
 <xs:complexType name="IfcBoiler">
  <xs:complexContent>
   <xs:extension base="ifc:IfcEnergyConversionDevice"/>
  </xs:complexContent>
 </xs:complexType>

EXPRESS Specification:

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

Formal Propositions:

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

Inheritance Graph:

ENTITY IfcBoiler
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 IfcStrippedOptional;
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 IfcStrippedOptional;
INVERSE
ConnectedTo : SET OF IfcRelConnectsElements FOR RelatingElement;
IsInterferedByElements : SET OF IfcRelInterferesElements FOR RelatedElement;
InterferesElements : SET OF IfcRelInterferesElements FOR RelatingElement;
HasOpenings : SET OF IfcRelVoidsElement FOR RelatingBuildingElement;
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
ENTITY IfcEnergyConversionDevice
ENTITY IfcBoiler
PredefinedType : OPTIONAL IfcStrippedOptional;
END_ENTITY;

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