IfcFan

IfcFan

Definition from IAI: An IfcFan is a device which imparts mechanical work on a gas.

HISTORY: New entity in IFC R2x.
ISSUES: See issues and change log for changes made in IFC R2x.

Geometry Use Definitions

The geometric representation of IfcFan is given by the IfcProductDefinitionShape, allowing multiple geometric representations. Included are:

Local Placement

The use of local placement is defined at the supertype IfcDistributionFlowElement.

Standard Geometric Representation

The use of Standard Geometric Representations is defined at the supertype IfcDistributionFlowElement.

EXPRESS specification:

ENTITY IfcFan

SUBTYPE OF (

IfcFluidMovingDevice);

AirFlowType

IfcAirFlowTypeEnum;

StaticPressure

OPTIONAL IfcPressureMeasure;

FanPressureClass

OPTIONAL IfcFanPressureClassEnum;

FanWheelType

OPTIONAL IfcFanWheelTypeEnum;

WheelMaterial

OPTIONAL IfcMaterialSelect;

WheelTipSpeed

OPTIONAL IfcLinearVelocityMeasure;

DischargeVelocity

OPTIONAL IfcLinearVelocityMeasure;

HousingMaterial

OPTIONAL IfcMaterialSelect;

DischargePressureLoss

OPTIONAL IfcPressureMeasure;

FanDischargeType

OPTIONAL IfcFanDischargeTypeEnum;

FanArrangement

OPTIONAL IfcFanArrangementEnum;

FanRotation

OPTIONAL IfcFanRotationEnum;

FanDriveArrangement

OPTIONAL IfcFanDriveArrangementEnum;

DrivePowerLoss

OPTIONAL IfcPowerMeasure;

MotorDriveType

OPTIONAL IfcMoterConnectionTypeEnum;

MotorInAirstream

OPTIONAL IfcBoolean;

FanMountingType

OPTIONAL IfcFanMountingTypeEnum;

END_ENTITY;

Attribute definitions:

AirFlowType	:	Enumeration of possible Fan AirFlow types (e.g., Supply, Return, Exhaust, etc.).
StaticPressure	:	The static pressure within the air stream that the fan must overcome to insure designed circulation of air.
FanPressureClass	:	Defines the Pressure Class of the fan used for identifying the thickness and types of materials required for the construction of the fan assembly.
FanWheelType	:	Defines the type of wheel typically utilized in fans.
WheelMaterial	:	The material used to construct the fan wheel.
WheelTipSpeed	:	The linear speed of the tip of the fan blade furthest from the shaft.
DischargeVelocity	:	The speed at which air discharges from the fan through the fan housing discharge opening.
HousingMaterial	:	The material used to construct the fan housing.
DischargePressureLoss	:	Fan discharge pressure losses associated with the discharge arrangement.
FanDischargeType	:	Defines the type of discharge arrangement from the fan housing discharge opening, which is used to determine the DischargePressureLoss
FanArrangement	:	Defines the type of fan arrangement for centrifugal fans.
FanRotation	:	Defines the types of fan rotation for centrifugal fans.
FanDriveArrangement	:	Defines the fan and motor drive arrangement as defined by AMCA.
DrivePowerLoss	:	Fan drive power losses associated with the type of connection between the motor and the fan wheel.
MotorDriveType	:	Defines the type of connection between the motor and the fan wheel.
MotorInAirstream	:	Boolean value to identify if the fan motor is in the conditioned airstream. TRUE = Yes, FALSE = No.
FanMountingType	:	Defines the method of mounting the fan in the building.

References (1):

Name

Type

Referred through

Express-G

IfcFluidMovingDevice

Entity

Subtype

Diagram 3

Inheritance graph

ENTITY IfcFan;

ENTITY IfcRoot;

GlobalId

IfcGloballyUniqueId;

OwnerHistory

IfcOwnerHistory;

Name

OPTIONAL IfcLabel;

Description

OPTIONAL IfcText;

ENTITY IfcObject;

ObjectType

OPTIONAL IfcLabel;

INVERSE

IsDefinedBy

SET OF IfcRelDefines FOR RelatedObjects;

HasAssociations

SET OF IfcRelAssociates FOR RelatedObjects;

HasAssignments

SET OF IfcRelAssigns FOR RelatedObjects;

Decomposes

SET OF IfcRelDecomposes FOR RelatedObjects;

IsDecomposedBy

SET [0:1] OF IfcRelDecomposes FOR RelatingObject;

ENTITY IfcProduct;

ObjectPlacement

OPTIONAL IfcObjectPlacement;

Representation

OPTIONAL IfcProductRepresentation;

INVERSE

ReferencedBy

SET OF IfcRelAssignsToProduct FOR RelatingProduct;

ENTITY IfcElement;

Tag

OPTIONAL IfcIdentifier;

INVERSE

ConnectedTo

SET OF IfcRelConnectsElements FOR RelatingElement;

ConnectedFrom

SET OF IfcRelConnectsElements FOR RelatedElement;

ContainedInStructure

SET [0:1] OF IfcRelContainedInSpatialStructure FOR RelatedElements;

ENTITY IfcDistributionElement;

ENTITY IfcDistributionFlowElement;

FlowElementType

IfcDistributionFlowElementTypeEnum;

INVERSE

HasControlElements

SET [0:1] OF IfcRelFlowControlElements FOR RelatingFlowElement;

ENTITY IfcFluidMovingDevice;

PrimaryEnergySource

OPTIONAL IfcEnergySourceEnum;

ImpellerDiameter

OPTIONAL IfcLengthMeasure;

ENTITY IfcFan;

AirFlowType

IfcAirFlowTypeEnum;

StaticPressure

OPTIONAL IfcPressureMeasure;

FanPressureClass

OPTIONAL IfcFanPressureClassEnum;

FanWheelType

OPTIONAL IfcFanWheelTypeEnum;

WheelMaterial

OPTIONAL IfcMaterialSelect;

WheelTipSpeed

OPTIONAL IfcLinearVelocityMeasure;

DischargeVelocity

OPTIONAL IfcLinearVelocityMeasure;

HousingMaterial

OPTIONAL IfcMaterialSelect;

DischargePressureLoss

OPTIONAL IfcPressureMeasure;

FanDischargeType

OPTIONAL IfcFanDischargeTypeEnum;

FanArrangement

OPTIONAL IfcFanArrangementEnum;

FanRotation

OPTIONAL IfcFanRotationEnum;

FanDriveArrangement

OPTIONAL IfcFanDriveArrangementEnum;

DrivePowerLoss

OPTIONAL IfcPowerMeasure;

MotorDriveType

OPTIONAL IfcMoterConnectionTypeEnum;

MotorInAirstream

OPTIONAL IfcBoolean;

FanMountingType

OPTIONAL IfcFanMountingTypeEnum;

END_ENTITY;