A method for increasing the efficiency of a heat pump installation has an energy recovery system prior to the expansion valve to make use of excess pressure

摘要

The heat pump has a compressor (3) generating a pressure of up to 13 bar at up to 70C some of which is lost through the condenser (4) and heating circuit. The expansion valve (7) reduces both pressure and temperature to the evaporator (5). An energy recovery unit (6) uses the pressure to drive other machines.