Heat pump system

摘要

The heat pump (1) may be used for heating and cooling purposes in a building. The first cold circuit (K1) uses an intermediate heat exchanger (2) as a condenser and has a compressor (3), an expansion valve (5) and an evaporator (4) with a pump (6) and a ventilator fan (7). The second cold circuit (K2) uses the intermediate heat exchanger as an evaporator, with a compressor (8), expansion valve (10) and a high-pressure condenser (9) connected to a second hot circuit (H2). This hot circuit incorporates a user (11) and is integrated with the first hot circuit (H1) which has a circulating pump (13) passing fluid through the intermediate heat exchanger. A control unit (12) is connected to this heat exchanger.