| 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: An operation control unit (100) controls a refrigerant circuit (11) so as to perform a cooling/cold storage cycle in which an outdoor heat exchanger (22) serves as a condenser and an indoor heat exchanger (27) and a regenerative heat exchanger (43) serve as an evaporator. Furthermore, when an evaporation temperature of refrigerant in the regenerative heat exchanger (43) is lower than a preset reference evaporation temperature while a cooling load of the indoor heat exchanger (27) increases in a cooling/cold storage operation for performing the cooling/cold storage cycle in the refrigerant circuit (11), the operation control unit (100) increases an opening degree of an indoor expansion valve (26) in response to an increase in the cooling load of the indoor heat exchanger (27).SELECTED DRAWING: Figure 1 |
