| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat pump improving COP by improving the heat exchanging efficiency of a refrigerant and the heated fluid. SOLUTION: This heat pump 20 is configurated by successively circularly connecting a decompression valve 21, an evaporator 22, a compressor 23 and a heat exchanger 24. The evaporator 22 stores the liquid refrigerant prepared by mixing a large amount of lubricant in liquid phase chlorofluorocarbon in an approximately full state. The compressor 23 sucks not only the evaporated chlorofluorocarbon (gas refrigerant) but also a large amount of liquid refrigerant. Whereby the dryness of the entire refrigerant is reduced in accompany with the compression. The countercurrent exchanger 24 transfers the sensible heat of the liquid refrigerant discharged from the compressor 23 to the heated fluid such as the water for hot-water supply. COPYRIGHT: (C)2004,JPO
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