AIR CONDITIONING APPARATUS EQUIPPED WITH ICE HEAT STORAGE TANK

摘要

PROBLEM TO BE SOLVED: To dispense with a liquid pump for sending under pressure a liquid refrigerant in a coil of an ice heat storage unit to a use side heat exchanger and to avoid surely the cavitation apt to occur in the liquid pump. SOLUTION: In an air conditioning apparatus 20 which has a heat source side unit 21 equipped with a compressor 28 and a heat source side heat exchanger 30 an ice heat storage unit 22 having a coil 34 disposed in a submerged state in an ice heat storage tank 35 and a use side unit 23 equipped with a use side heat exchanger 32 and is equipped with the ice heat storage tank enabling execution of an ice making operation and a cooling operation, surge tanks 43A and 43B which can reserve a refrigerant are disposed in a parallel state between the coil 34 in the ice heat storage tank 35 and the use side heat exchanger 32. A liquid refrigerant condensed in the coil 34 is reserved in the tanks 43A and 43B and this reserved liquid refrigerant is made sendable under pressure to the use side heat exchanger by a high-pressure gas refrigerant supplied alternately into the tanks.