Page Operations
Browse Space
Set Energy Consumption
Overview
Describes the setting (capture) of values of energy consumption for a spatial structure or space grouping (zone) entity. A spatial structure may be a building, building storey or space and may be of any element composition including complex, element or partial. Typically, energy consumption will be captured for at least the top level spatial structure of the project
Energy consumption values ar determined from analysis of the various building loads and then establishingthe input energy consumed.
Results
Energy consumption values are calculated
| Description | Entity/Pset/Functional Part | MAN | REC | OPT |
|---|---|---|---|---|
| Set the value of the period during which the energy consumption is to be calculated.
This functional part only considers the capture of one time period. Alternative time periods can be captured within separate occurrences of property sets. |
Pset_EnergyConsumption.UnitTimePeriod::IfcPropertySingleValue::IfcReal |  |
||
| Set the measure for the time period over which the energy consumption is to be calculated. | Pset_EnergyConsumption.UnitTimeMeasure::IfcPropertyEnumeration::PEnum_UnitTimeMeasure | |
||
| Determine the energy consumed in achieving the heating requirements | Pset_EnergyConsumption.HeatingConsumption::IfcPropertySingleValue::IfcEnergyMeasure | |
||
| Determine the energy consumed in achieving the cooling requirements | Pset_EnergyConsumption.CoolingConsumption::IfcPropertySingleValue::IfcEnergyMeasure | |
||
| Determine the energy consumed in meeting the lighting requirements | Pset_EnergyConsumption.LightingConsumption::IfcPropertySingleValue::IfcEnergyMeasure | |
||
| Determine the energy consumed in meeting the power requirements.
Note that this provides information on electrical energy consumption for purposes other than lighting. |
Pset_EnergyConsumption.PowerConsumption::IfcPropertySingleValue::IfcEnergyMeasure | |
||
| Determine the total energy consumed. This value should be the addition of all of the previous energy consumption values captured. |
Pset_EnergyConsumption.TotalConsumption::IfcPropertySingleValue::IfcEnergyMeasure | |
Examples of Capturing Energy Consumption
This example deals with the energy consumption for an elemental space over a period of 1 year.
#2=IFCOWNERHISTORY(...);
/* defining the spaces */
#901=IFCSPACE(...);
/* relating the spaces and the property set */
#911=IFCRELDEFINESBYPROPERTIES('abcdefghijklmnopqrst911',#2,$,$,(#901),#931);
/* definition of occurrence property set */
#931=IFCPROPERTYSET('abcdefghijklmnopqrst921',#2,'Pset_SpaceThermalDesign',$,(#941,#942,#943,#944,#945,#946,#947));
/* definition of energy consumption properties */
/* optional property enumeration not asserted */
#941=IFCPROPERTYSINGLEVALUE('UnitTimePeriod',$,1.0,$);
#942=IFCPROPERTYENUMERATEDVALUE('UnitTimeMeasure',$,('Year'),$);
#943=IFCPROPERTYSINGLEVALUE ('HeatingConsumption',$,2000.0,$);
#944=IFCPROPERTYSINGLEVALUE('CoolingConsumption',$,3000.0,$);
#945=IFCPROPERTYSINGLEVALUE('LightingConsumption',$,1500.0,$);
#946=IFCPROPERTYSINGLEVALUE ('PowerConsumption',$,2200.0,$);
#947=IFCPROPERTYSINGLEVALUE('TotalConsumption',$,8700.0,$);