IfcFanTypeEnum

BACnet MVD

#### IfcFanTypeEnum

Natural language names

| Fan Type Enum
| Enumération des types de ventilateur

##### 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.

##### 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:restriction>
</xs:simpleType>
`
EXPRESS Specification
`TYPE IfcFanTypeEnum = ENUMERATION OF (
CENTRIFUGALFORWARDCURVED,
CENTRIFUGALRADIAL,
CENTRIFUGALBACKWARDINCLINEDCURVED,
CENTRIFUGALAIRFOIL,
TUBEAXIAL,
VANEAXIAL,
PROPELLORAXIAL,
USERDEFINED,
NOTDEFINED);
END_TYPE;

EXPRESS-G diagram

`

References: IfcFan IfcFanType

Link to this page