公开(公告)号：US20190145667A1

公开(公告)日：2019-05-16

申请号：US16089994

申请日：2017-03-23

Applicant: NEC CORPORATION

Inventor： Arihiro MATSUNAGA ,  Minoru YOSHIKAWA ,  Hisato SAKUMA ,  Masato YANO ,  Asuka MATSUBA ,  Takafumi NATSUMEDA

IPC: F25B1/00 ,  F28D1/053 ,  F25B41/04

Abstract: Since improving heat exchange between a gas-phase refrigerant and a liquid-phase refrigerant in a refrigeration system could instead result in a reduction in the efficiency of the whole refrigeration system, a heat exchange device (201) of the present invention includes: a refrigerant supply means (210) for supplying a first-temperature liquid-phase refrigerant (R11) and a second-temperature gas-phase refrigerant (R12) in one circulation system; a plurality of heat exchange means (220A, 220B) which are each configured so as to perform heat exchange between the liquid-phase refrigerant and the gas-phase refrigerant; and refrigerant circulation means (231, 232, 242) for circulating the gas-phase refrigerant (R12) in such a manner that the gas-phase refrigerant (R12) flows in parallel in the plurality of heat exchange means, and circulating the liquid-phase refrigerant (R11) in such a manner that the liquid-phase refrigerant (R11) flows in series in the plurality of heat exchange means.