| 摘要 |
PROBLEM TO BE SOLVED: To prevent the degradation of heating performance when the heat quantity of cooling heat exchangers 45, 51 exceeds the required heat quantity of an indoor heat exchanger 41. SOLUTION: This refrigerating plant 1 comprises a refrigerant circuit 1E via which a compressor 2, an outdoor heat exchanger 4, an expansion mechanism, the indoor heat exchanger 41 for air-conditioning a room, the cooling heat exchangers 45, 51 for cooling boxes are connected to one another. The refrigerant circuit 1E has a discharge side three-way selector valve 101 for varying the flow amount of refrigerant out of refrigerant discharged from the compressor 2, to be distributed into the indoor heat exchanger 41 and the outdoor heat exchanger 4 during heat recovery operation when the indoor heat exchanger 41 and the outdoor heat exchanger 4 are served as condensers. As a result, when heat quantity obtained by the cooling heat exchanger 45, 51 exceeds heat quantity required for the indoor heat exchanger 41, extra heat is exhausted without lowering too much the discharge pressure of the compressor 2. COPYRIGHT: (C)2006,JPO&NCIPI
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