Heat pump water heater. Testing and rating at part load conditions and calculation of seasonal coefficient of performance for space heating
Heat pump water heater. Testing and rating at part load conditions and calculation of seasonal coefficient of performance for space heating
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What is ISO 21978 about?
ISO 21978 specifies test conditions for determining the seasonal performance characteristics of air source heat pump water heaters for space heating with electrically driven compressors with or without supplementary heater. ISO 21978 specifies the technicalities such as terms, definitions, symbols, installation requirements, setting and part load test conditions, space heating test, calculation methods for seasonal co-efficient of performance (SCOP), test results and test reports for testing and rating of heat pump water heater. ISO 21978 defines:
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