188.8.131.52.1 Semantic definition
Chiller performance history attributes.
184.108.40.206.2 Applicable entities
|Name||Property Type||Data Type||Description|
The capacity of the element.
The product of the ideal capacity and the overall volumetric efficiency of the compressor.
Energy efficiency ratio (EER).
Ratio of net cooling capacity to the total input rate of electric power applied. By definition, the units are BTU/hour per Watt. The input electric power may be obtained from Pset_DistributionPortPHistoryElectrical.RealPower on the 'Power' port of the IfcChiller.
The Coefficient of performance (COP) is the ratio of heat removed to energy input. The energy input may be obtained by multiplying Pset_DistributionPortPHistoryGas.FlowRate on the 'Fuel' port of the IfcChiller by Pset_MaterialFuel.LowerHeatingValue. The IfcDistributionPort for fuel has an associated IfcMaterial with fuel properties and is assigned to an IfcPerformanceHistory object nested within this IfcPerformanceHistory object.