| 摘要 |
PROBLEM TO BE SOLVED: To provide a utilizing method for cool heat in a heat accumulator with flexibility thereby increasing a stored cool heat utilizing efficiency and reducing the condensing pressure of refrigerant by a method wherein a bypass circuit is arranged to change the inlet port side refrigerant condition of a heat exchanger into two-phase flow of gas and liquid. SOLUTION: A refrigerating cycle system is constituted of an outdoor machine A, a heat accumulator B, an outdoor machine C, a controller D and the like. Upon stored cool heat utilizing cooling operation, the refrigerant of two phases of gas and liquid is supplied into a heat accumulator heat exchanger 10 to use the heat accumulator heat exchanger 10 as an outdoor heat exchanger 3 and a condenser simultaneously whereby cool heat, stored in the heat accumulator, can be utilized more conveniently than a case, in which the heat exchanger is utilized for only the condensation or the supercooling of liquid refrigerant, whereby a cool heat utilizing efficiency can be improved and a condensing pressure in the outdoor heat exchanger 3 can be reduced. Further, the bypass flow rate of gas refrigerant is controlled by a gas bypass flow rate control valve 16, provided in a pipeline connected from a compressor 1 to the heat accumulator heat exchanger 10, whereby the utilizing efficiency of the stored cool heat can be adjusted. |
