| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a binary refrigeration cycle device capable of improving COP (Coefficient Of Performance) and ensuring high heating capability with reduced electrical power. <P>SOLUTION: A saturation condensation temperature of a refrigerant in a low-temperature side refrigeration cycle in the saturation condensation temperature of the refrigerant when the COP of the device becomes maximum or a saturation evaporation temperature of the refrigerant in a high temperature side refrigeration cycle is kept beforehand as an optimum value. Then, the operation frequency of a low temperature side compressor and a high temperature side compressor is controlled so that an actual saturation condensation temperature or saturation evaporation temperature may become the optimum value. <P>COPYRIGHT: (C)2013,JPO&INPIT |
