IfcFanTypeEnum

Semantic definitions at the type

Type definition

Enumeration defining the typical types of fans.

HISTORY New enumeration in IFC2x2.

Enumeration definition

Constant	Description
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.
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	Air flows through the impeller axially with guide vanes and reduced running blade tip clearance.
PROPELLORAXIAL	Air flows through the impeller axially and small hub-to-tip ratio impeller mounted in an orifice plate or inlet ring.
USERDEFINED	User-defined fan type.
NOTDEFINED	Undefined fan type.
JET	A fan used for producing a high-velocity flow of air in a space. The typical function is to add momentum to the air within a tunnel. Inlets and outlets are not ducted.

Formal representations

XML Specification

 <xs:simpleType name="IfcFanTypeEnum">

  <xs:restriction base="xs:string">

   <xs:enumeration value="centrifugalforwardcurved"/>

   <xs:enumeration value="centrifugalradial"/>

   <xs:enumeration value="centrifugalbackwardinclinedcurved"/>

   <xs:enumeration value="centrifugalairfoil"/>

   <xs:enumeration value="tubeaxial"/>

   <xs:enumeration value="vaneaxial"/>

   <xs:enumeration value="propelloraxial"/>

   <xs:enumeration value="userdefined"/>

   <xs:enumeration value="notdefined"/>

   <xs:enumeration value="jet"/>

  </xs:restriction>

 </xs:simpleType>

EXPRESS Specification


TYPE IfcFanTypeEnum = ENUMERATION OF (

 CENTRIFUGALFORWARDCURVED, 
 CENTRIFUGALRADIAL, 
 CENTRIFUGALBACKWARDINCLINEDCURVED, 
 CENTRIFUGALAIRFOIL, 
 TUBEAXIAL, 
 VANEAXIAL, 
 PROPELLORAXIAL, 
 USERDEFINED, 
 NOTDEFINED, 
 JET);
END_TYPE;


 EXPRESS-G diagram

Item	SPF	XML	Change	Description
IFC4X3_ADD2 to IFC4X4_draft
IfcFanTypeEnum
JET			ADDED

	Fan Type Enum
	Enumération des types de ventilateur