IFCHVACDOMAIN
The data model consists of the following:
The IfcHvacDomain schema in the domain layer defines basic object
concepts required for interoperability within the heating, ventilating and
air conditioning (HVAC) domain. It extends concepts defined in the IfcSharedBldgServiceElements
schema.
Scope
The scope of the IfcHvacDomain schema is defined as:
- The segments, fittings and connections that constitute duct and piping distribution systems typically
used for building services, such as for air conditioning, ventilation and exhaust-air systems; chilled water,
steam and heating hot water, potable water, waste, natural gas and LPG systems, etc.
- Equipment typically used in building services systems, such as boilers, chillers, fans, pumps, etc., and
the vibration isolation associated with these components.
- Terminal and flow control devices, such as air vents and grilles, variable air volume modulators, valves,
dampers, etc.
Out of Scope
The following are deemed to be out of scope of the IfcHvacDomain schema at this time:
- Industrial and institutional specialty equipment such as that used for power production, manufacturing
and fabrication, etc.
- Provisions for dealing explicitly with hazardous materials such as chemical or biological agents
- Controls systems and sequencing systems for these equipment beyond what is defined in the
IfcBuildingControl domain schema
Occurrence
Classes within this schema define only types of elements that are used in heating, ventilating and air
conditioning building services where subtypes of IfcDistributionElementType have been elaborated in
the IfcSharedBldgServiceElements schema to mirror their corresponding occurrence entities. Refer to
the schema description for the IfcSharedBldgServiceElements for more information about concepts of
type, occurrence and performance history.
The objective is that a specific element type is defined only once in an IFC exchange. Occurrences of
elements that are related to these types are defined by instances of related subtypes of
IfcDistributionElement (also defined in the IfcSharedBldgServiceElements schema). Details of
the relevant occurrence subtype are provided in the documentation for each type.
HISTORY
This schema has been significantly modified in IFC R2x2. Refer to the change log and
issues resolution database for details.
Interfaced schemas (12):
Entities (31):
Enumerations (31):
