| 摘要 |
PROBLEM TO BE SOLVED: To provide a cooling storage free from concern about freezing caused by maldistribution of components, though mixture liquid of two or more kinds of refrigerants having boiling points different from each other is used as a secondary refrigerant in the cooling storage wherein the heat generated by a Stirling refrigerating machine is radiated from a secondary refrigerant circulating circuit. SOLUTION: This cooling storage 1 cools its inside by using the Stirling refrigerating machine 50 as a cold heat source. The heat of a heat radiating portion 51 of the Stirling refrigerating machine 50 is radiated by a thermo-siphon circulating circuit and a forced circulating circuit 110. The secondary refrigerant is shared in the thermo-siphon circulating circuit 60 and the forced circulating circuit 110, and is composed of the mixture liquid of two or more refrigerants having boiling points different from each other. A control portion 15 continues the operation of a circulating pump 111 of the forced circulating circuit 110 for a prescribed time even after the termination of the operation of a Stirling engine 50, when the outside air temperature is low. COPYRIGHT: (C)2006,JPO&NCIPI
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