IFC 4.3.0.1 (IFC4X3) development

7.5.2.19 IfcFanTypeEnum

7.5.2.19.1 Semantic definition

Enumeration defining the typical types of fans.

7.5.2.19.2 Type values

Type Description
CENTRIFUGALAIRFOIL

Air flows through the impeller radially using blades that are airfoil shaped.

CENTRIFUGALBACKWARDINCLINEDCURVED

Air flows through the impeller radially using blades that are backward curved.

CENTRIFUGALFORWARDCURVED

Air flows through the impeller radially using blades that are forward curved.

CENTRIFUGALRADIAL

Air flows through the impeller radially using blades that are uncurved or slightly forward curved.

PROPELLORAXIAL

Air flows through the impeller axially and small hub-to-tip ratio impeller mounted in an orifice plate or inlet ring.

TUBEAXIAL

Air flows through the impeller axially with reduced tip clearance and operating at higher tip speeds.

VANEAXIAL

Air flows through the impeller axially with guide vanes and reduced running blade tip clearance.

USERDEFINED

User-defined fan type.

NOTDEFINED

Undefined fan type.

Table 7.5.2.19.A

7.5.2.19.3 Formal representation

TYPE IfcFanTypeEnum = ENUMERATION OF
	(CENTRIFUGALAIRFOIL
	,CENTRIFUGALBACKWARDINCLINEDCURVED
	,CENTRIFUGALFORWARDCURVED
	,CENTRIFUGALRADIAL
	,PROPELLORAXIAL
	,TUBEAXIAL
	,VANEAXIAL
	,USERDEFINED
	,NOTDEFINED);
END_TYPE;

7.5.2.19.4 References

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