| 摘要 |
PROBLEM TO BE SOLVED: To provide a storage air conditioner having a cold storage function, capable of reliably reducing the temperature of heat storage medium flowing into a heat storage tank while suppressing closure of a regenerative heat exchanger.SOLUTION: A heat storage medium flowing out of a heat storage tank (62) during a heat storage operation is heated in a preheating heat exchanger (36) to melt clathrate hydrates and is then supplied to a regenerative heat exchanger (37). The regenerative heat exchanger (37) cools the heat storage medium. A refrigerant circuit (11) supplies refrigerant condensed in an outdoor heat exchanger (22) to the preheating heat exchanger (36). An operation control unit (100) controls constituent equipment including a first overcooling expansion valve (24c) in such a manner that the temperature of the refrigerant flowing into the preheating heat exchanger (36) is equal to or lower than a reference temperature.SELECTED DRAWING: Figure 4 |
