Heat Pump Technology

absorption heat pump achieved additional heating air heat air-conditioning air/air heat pump anergy annual approximately balance point boiler building calculated centrifugal compressor coil cold compressor condensing temperature connected load cooling output de-frost de-humidification demand charge diagram district heating DM/yr domestic hot water economics electric electric resistance energy consumption energy costs enthalpy evaporating temperature exhaust air expansion valve external air external temperature fresh air ground water heat demand heat exchanger heat output heat pump plant heat recovery heat requirement heat source heat transfer heat transfer coefficient heater heating plant heating system heating water input installed kWh/yr m³/h off-peak operating costs pipe pool water pressure Qmax refrigeration machine regenerative heat exchanger shown in Figure soil solar collector solution storage supplementary heating swimming pool switched Table temperature difference tion underfloor heating unit utilisation W/m² warm water waste heat water circuit water heating