IfcCompressorTypeEnum

Semantic definitions at the type

Type definition

Enumeration defining the typical types of compressors.

HISTORY New enumeration in IFC2x.

Enumeration definition

Constant	Description
DYNAMIC	The pressure of refrigerant vapor is increased by a continuous transfer of angular momentum from a rotating member to the vapor followed by conversion of this momentum into static pressure.
RECIPROCATING	Positive-displacement compressor using a piston driven by a connecting rod from a crankshaft.
ROTARY	Positive-displacement compressor using a roller or rotor device.
SCROLL	Positive-displacement compressor using two inter-fitting, spiral-shaped scroll members.
TROCHOIDAL	Positive-displacement compressor using a rolling motion of one circle outside or inside the circumference of a basic circle and produce either epitrochoids or hypotrochoids.
SINGLESTAGE	Positive-displacement reciprocating compressor where vapor is compressed in a single stage.
BOOSTER	Positive-displacement reciprocating compressor where pressure is increased by a booster.
OPENTYPE	Positive-displacement reciprocating compressor where the shaft extends through a seal in the crankcase for an external drive.
HERMETIC	Positive-displacement reciprocating compressor where the motor and compressor are contained within the same housing, with the motor shaft integral with the compressor crankshaft and the motor in contact with refrigerant.
SEMIHERMETIC	Positive-displacement reciprocating compressor where the hermetic compressors use bolted construction amenable to field repair.
WELDEDSHELLHERMETIC	Positive-displacement reciprocating compressor where the motor compressor is mounted inside a steel shell, which, in turn is sealed by welding.
ROLLINGPISTON	Positive-displacement rotary compressor using a roller mounted on the eccentric of a shaft with a single vane in the nonrotating cylindrical housing.
ROTARYVANE	Positive-displacement rotary compressor using a roller mounted on the eccentric of a shaft with multiple vanes in the nontotating cylindrical housing.
SINGLESCREW	Positive-displacement rotary compressor using a single cylindrical main rotor that works with a pair of gate rotors.
TWINSCREW	Positive-displacement rotary compressor using two mating helically grooved rotors, male (lobes) and female (flutes) in a stationary housing with inlet and outlet gas ports.
USERDEFINED	User-defined compressor type.
NOTDEFINED	Undefined compressor type.

Formal representations

XML Specification

 <xs:simpleType name="IfcCompressorTypeEnum">

  <xs:restriction base="xs:string">

   <xs:enumeration value="dynamic"/>

   <xs:enumeration value="reciprocating"/>

   <xs:enumeration value="rotary"/>

   <xs:enumeration value="scroll"/>

   <xs:enumeration value="trochoidal"/>

   <xs:enumeration value="singlestage"/>

   <xs:enumeration value="booster"/>

   <xs:enumeration value="opentype"/>

   <xs:enumeration value="hermetic"/>

   <xs:enumeration value="semihermetic"/>

   <xs:enumeration value="weldedshellhermetic"/>

   <xs:enumeration value="rollingpiston"/>

   <xs:enumeration value="rotaryvane"/>

   <xs:enumeration value="singlescrew"/>

   <xs:enumeration value="twinscrew"/>

   <xs:enumeration value="userdefined"/>

   <xs:enumeration value="notdefined"/>

  </xs:restriction>

 </xs:simpleType>

EXPRESS Specification


TYPE IfcCompressorTypeEnum = ENUMERATION OF (

 DYNAMIC, 
 RECIPROCATING, 
 ROTARY, 
 SCROLL, 
 TROCHOIDAL, 
 SINGLESTAGE, 
 BOOSTER, 
 OPENTYPE, 
 HERMETIC, 
 SEMIHERMETIC, 
 WELDEDSHELLHERMETIC, 
 ROLLINGPISTON, 
 ROTARYVANE, 
 SINGLESCREW, 
 TWINSCREW, 
 USERDEFINED, 
 NOTDEFINED);
END_TYPE;


 EXPRESS-G diagram

	Compressor Type Enum
	Enumération des types de compresseur