| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigerating system having excellent refrigerating capacity without causing a lowering of durability of a compressor even if using a CO<SB>2</SB>refrigerant, and to provide a showcase using the refrigerating system. SOLUTION: The refrigerating system 2 has a condensing unit 14, wherein a gas cooler 24, an expander 26, a first heat exchanger 28, a receiver 30 and a second heat exchanger 32 are sequentially interposed in the flow direction of the CO<SB>2</SB>refrigerant in a condensing passage 22 of the condensing unit 14 through which the CO<SB>2</SB>refrigerant flows. The expander 26 expands the CO<SB>2</SB>refrigerant and supplies the CO<SB>2</SB>refrigerant in the wet state to the first heat exchanger 28, and the receiver 30 supplies only the liquid CO<SB>2</SB>refrigerant out of the CO<SB>2</SB>refrigerant to the second heat exchanger 32. The refrigerating system 2 also has a cooling fluid circulating circuit 19 which supplies a cooling fluid lower in temperature than the condensing temperature of the CO<SB>2</SB>refrigerant, to each of the first and second heat exchangers 28, 32. COPYRIGHT: (C)2006,JPO&NCIPI
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