A fan is a device which imparts mechanical work on a gas. A typical usage of a fan is to induce airflow in a building services air distribution system.
HISTORY New entity in IFC4
{ .note}
Either the PredefinedType attribute is unset (e.g. because an IfcFanType is associated), or the inherited attribute ObjectType shall be provided, if the PredefinedType is set to USERDEFINED.
Either there is no fan type object associated, i.e. the IsTypedBy inverse relationship is not provided, or the associated type object has to be of type IfcFanType.
Material from which the casing is constructed.
Material from which the fan wheel is constructed.
Incoming air.
Outgoing air.