| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a heat pump using a positive-displacement compressor and its operation method, capable of taking out warm water of comparatively high temperature of 55-70°C while suppressing overheating of a discharge temperature and a driving motor, and further power-up. <P>SOLUTION: In this heat pump 1 and its operation method, wherein the compressor 2, a condenser 3, a main expansion valve 4 and an evaporator 5 are successively disposed in a refrigerant circulating flow channel 6, and the refrigerant is sealed inside, the compressor 2 is the positive-displacement compressor, R134a is used as the refrigerant, and the heat pump 1 has a function for making a refrigerant gas at an outlet of the evaporator 5 be a humid gas of dryness of 0.7-0.98. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
