| 摘要 |
PROBLEM TO BE SOLVED: To suppress the reduction in circulation efficiency for a heat storage medium while ensuring a cooling capability in a cooling/cold storage operation.SOLUTION: In a refrigerant circuit (11), a cooling/cold storage cycle is performed in such a manner that a discharge end of a compressor (21) is connected to a gas end of an outdoor heat exchanger (22), a suction end of the compressor (21) is connected to a gas refrigerant flow passage (13), the outdoor heat exchanger (22) serves as a condenser, and an indoor heat exchanger (27) and a regenerative heat exchanger (43) serve as an evaporator. A pressure regulation mechanism (44) is configured to be able to regulate a pressure of refrigerant circulating between the regenerative heat exchanger (43) and the gas refrigerant flow passage (13).SELECTED DRAWING: Figure 1 |
