| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioning system capable of performing an operation in which hot water for a bath or heat used for cooling and heating can be stored by employing inexpensive midnight service of electricity. SOLUTION: An air conditioning system comprises a hot water supplying heat storage device including a compresssor 1, an outdoor heat exchanger 2, an indoor heat exchanger 3, a first four-way valve 6, a second four-way valve 7, a hot water supplying refrigerant coil 9 in which a refrigerant flows and a hot water supplying coil 10 heat-exchanging therefor to make hot water and a heat storage tank unit 15 composed of a water heat exchanger 20 for obtaining heat for heating in such a way that a condensed refrigerant flows in a heat storage coil 17 in a heat storage tank 16 containing water to make ice on the outer periphery of the coil and cooling cold heat obtains heat for heating under a heat exchange between a water coil 23 in which water flows by a circulating pump 21 and a refrigerant coil 22 in which a refrigerant flows to make hot water. Thus, a hot water supplying heat storage operation for making hot water by a midnight service of electricity and an air conditioning heat storage operation for making ice or hot water are carried out to recover cold heat and hot heat through the water heat exchanger. Thus, an energy saving air conditioning system capable of using the cold heat and hot heat for cooling and heating operations can be realized.
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