| 摘要 |
PROBLEM TO BE SOLVED: To contrive the peak-cut operation of an electric power in the daytime in summer especially by a method wherein a period of time, in which a surplus capacity is generated in a cooling device when an outdoor temperature is lowered at night, is utilized effectively to reduce an electric power consumption as well as a cost for heat. SOLUTION: A cooling device is installed in a showcase, in which the inside of a showcase main body 1, constituted of heat insulating walls 3, is defined by a duct sheet 4 to form a cold air passage 7 and a fan 12 is arranged in the air passage 7. In this case, the cooling device is provided with a cooler 16, installed in the air passage 7 and provided with a heat storage member for cooling air ventilated by the fan 12 to cool the inside of the main body 1, and a cooling circuit, connected to the cooler 16 to store heat in the heat storage member, while the heat storage operation of the heat storage member is controlled in accordance with the fluctuation of a temperature in the main body 1 and a set time of the heat storage member.
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