To provide a heat storage tank which can be protected against destruction while reducing the size and in which bridging of ice can be prevented.
The heat storage tank comprises air conditioning side piping 32a for passing refrigerant of an air conditioning indoor unit 8 performing indoor cooling/heating through refrigeration cycle, and refrigeration side piping 33a for passing refrigerant of a showcase 26 performing refrigeration or freezing in the compartment through refrigeration cycle. The air conditioning side piping 32a and the refrigeration side piping 33a are arranged contiguously to each other while spaced apart from each other and coupled with the refrigeration cycle such that the refrigerant of the air conditioning side piping 32a and the refrigerant of the refrigeration side piping 33a flow oppositely.
NAKAYAMA SHINICHI
TSUCHIYA TOSHIAKI
ISHIYAMA OSAMU
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