| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat pump hot water system having high heat exchange efficiency. <P>SOLUTION: The heat pump hot water system is provided with an outdoor unit 1, a heating/cooling panel 4, an indoor unit 2 having a refrigerant water heat exchanger 21, a hot water storage tank 32, a tank water refrigerant heat exchanger 31 and a water pump 22. The tank water refrigerant heat exchanger 31 is arranged in parallel with the water refrigerant heat exchanger 21. The heat pump hot water system is further provided with an indoor side refrigerant temperature detection means 24 for detecting the temperature of a refrigerant flowing out from the water refrigerant heat exchanger 21, a tank side refrigerant temperature detection means 26 for detecting the temperature of a refrigerant flowing out from the tank water refrigerant heat exchanger 31, a discharge water temperature detection means 23 for detecting the temperature of water flowing out from the water refrigerant heat exchanger 21, and a tank water temperature detection means 33 for detecting the temperature within the hot water storage tank 32. When a compression ratio is lower than a predetermined value, a throttle mechanism is operated to the closing direction. <P>COPYRIGHT: (C)2010,JPO&INPIT |
