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A cooling tower is a device which rejects heat to ambient air by circulating a fluid such as water through it to reduce its temperature by partial evaporation.

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 482.

Table 482 — IfcCoolingTower Object Typing

Property Sets for Objects

The Property Sets for Objects concept applies to this entity as shown in Table 483.

Table 483 — IfcCoolingTower Property Sets for Objects

Quantity Sets

The Quantity Sets concept applies to this entity as shown in Table 484.

Table 484 — IfcCoolingTower Quantity Sets

Material Constituents

The Material Constituents concept applies to this entity as shown in Table 485.
CasingMaterial from which the casing is constructed.
FillFill material.

Table 485 — IfcCoolingTower Material Constituents

Object Aggregation

The Object Aggregation concept applies to this entity as shown in Table 486.
MECHANICALFORCEDDRAFTIfcFanMay contain fan components for forcing air into the cooling tower.
MECHANICALINDUCEDDDRAFTIfcFanMay contain fan components for inducing air into the cooling tower.

Table 486 — IfcCoolingTower Object Aggregation

Port Nesting

The Port Nesting concept applies to this entity as shown in Table 487.
 CondenserWaterInSINKCONDENSERWATERWarmer water entering the cooling tower.
 CondenserWaterOutSOURCECONDENSERWATERCooler water leaving the cooling tower.

Table 487 — IfcCoolingTower Port Nesting

XSD Specification:

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

EXPRESS Specification:

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

Link to EXPRESS-G diagram EXPRESS-G diagram

Formal Propositions:

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

Inheritance Graph:

ENTITY IfcCoolingTower
GlobalId : IfcGloballyUniqueId;
OwnerHistory : OPTIONAL IfcOwnerHistory;
Name : OPTIONAL IfcLabel;
Description : OPTIONAL IfcText;
ENTITY IfcObjectDefinition
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;
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;
ReferencedBy : SET OF IfcRelAssignsToProduct FOR RelatingProduct;
ENTITY IfcElement
Tag : OPTIONAL IfcIdentifier;
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
HasPorts : SET OF IfcRelConnectsPortToElement FOR RelatedElement;
ENTITY IfcDistributionFlowElement
HasControlElements : SET [0:1] OF IfcRelFlowControlElements FOR RelatingFlowElement;
ENTITY IfcEnergyConversionDevice
ENTITY IfcCoolingTower
PredefinedType : OPTIONAL IfcCoolingTowerTypeEnum;

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