| 摘要 |
An air conditioning system including a hot water supply device for producing hot water, said system comprising: a heat pump refrigerant circuit having a compressor, a hot water heat exchanger connected to the compressor for exchanging heat of the compressed refrigerant with water to be heated, a refrigerant switching device connected to the hot water heat exchanger, a space conditioning heat exchanger connected to the switching device and which operates as a condenser during a heating cycle and as an evaporator during a cooling cycle, a heat transfer heat exchanger connected to the switching device and which operates as a condenser during the cooling cycle and as an evaporator during the heating cycle, and a throttle connected between the space conditioning heat exchanger and the heat transfer heat exchanger means. A water preheater heat exchanger is connected for receiving refrigerant from the one of the space conditioning heat exchanger and heat transfer heat exchanger which is acting as a condenser and supplying it to the throttle, whereby the water preheater heat exchanger preheats water before supplying it to the hot water heat exchanger to thereby increase the heat supplied to the hot water produced by the system. |
