IFC 4.3.x development

7.5.2.19 IfcFanTypeEnum

7.5.2.19.1 Semantic definitions at the entity

Enumeration defining the typical types of fans.

HISTORY  New enumeration in IFC2x2.

Items

CENTRIFUGALFORWARDCURVED
CENTRIFUGALRADIAL

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

CENTRIFUGALBACKWARDINCLINEDCURVED

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

CENTRIFUGALAIRFOIL

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

TUBEAXIAL

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

VANEAXIAL
PROPELLORAXIAL

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

USERDEFINED
NOTDEFINED

Undefined fan type.

7.5.2.19.1 Formal representations

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