| 摘要 |
PROBLEM TO BE SOLVED: To improve the rate of heat transfer from a high-pressure liquid medium to a low-pressure medium by specifying set-up conditions of a supercooling heat exchanger. SOLUTION: The supercooling heat exchanger is constituted of a double-pipe heat exchanger having a vertical high-pressure side channel 14 and a low- pressure side channel 15, and performs supercooling by exchanging heat between the high-pressure liquid medium X1 at the upstream of a depressurizing mechanism and the low pressure medium X2 obtained by depressurizing the high- pressure liquid medium X1 . Thus the low pressure medium X2 which makes a gas-liquid two-phase flow in the initial stage of inflow is allowed to readily turn into an annular flow, whereby performance of the supercooling heat exchanger can be improved.
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