| 摘要 |
PROBLEM TO BE SOLVED: To improve heat exchange performance, in a heat exchanger which heat-exchanges a refrigerant in a refrigeration cycle and a heat medium.SOLUTION: In a plurality of refrigerant flow passages 121 and a plurality of cooling water flow passages 122, there arranged offset fins 301, 302 which join adjacent plate-shaped members 11 to each other, and promote heat exchange between a refrigerant and cooling water, a height of the refrigerant flow passage is equal to a refrigerant-side fin height Frh, a height of the cooling water flow passage is equal to a cooling-water side fin height Fwh, and the refrigerant-side fin height Frh and the cooling-water side fin height Fwh are set so as to satisfy a relationship of 0.14<Frh/(Frh+Fwh)<0.49. |
