US Patent RE39288 Heat pump system and method for air-conditioning

There is provided a heat pump system including two (4,6), at least similar units in fluid communication with each other, each unit having a housing (8,8′), a first air/brine heat exchanger (12,12′), a second brine/refrigerant heat exchanger (24,24′), a brine inlet (10,10′) for applying brine onto at least one of the heat exchangers, a brine reservoir (14,14′) and a pump (28) for circulating the brine from the reservoir to the inlet. The first and second heat exchangers are in closed loop fluid communication with each other and have a compressor (44) for circulating a refrigerant therethrough in selected directions.