| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for defrosting and deicing coolers which directly cool loads in a cooling facility. SOLUTION: In the cooling facility, the coolers with different operating temperatures (low, medium and high) which exist within the facility are sequentially cooled by one refrigerant/heat medium cooling means using the same refrigerant and the same heat medium in such a way that first a low temperature range, then a medium temperature range, and finally a high temperature range are attained. The coolers are communicated with one another by a pipeline in the order of operating temperature from the lowest operating temperature to the highest operating temperature in order to circulate the refrigerant and the heat medium. Further, a refrigerant/head medium cooling means, a pump and a first valve are arranged in series in the pipeline. A bypass line having a second valve in parallel with the refrigerant/heat medium cooling means and the first valve is connected to and disposed in the pipeline. COPYRIGHT: (C)2004,JPO
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