| 摘要 |
PROBLEM TO BE SOLVED: To provide an evaporator for a heat exchanger capable of improving cooling performance of the heat exchanger. SOLUTION: This evaporator for the heat exchanger comprises a refrigerant flow channel 3 for circulating the refrigerant, and a heat transfer face 2a kept into contact with the refrigerant in the refrigerant flow channel 3, and the phase of at least a part of the refrigerant kept into contact with the heat transfer face 2a is changed from liquid to gas. The heat transfer face 2a has an uneven surface 13 having specific surface area of 15cm<SP>2</SP>or more per 1cm<SP>2</SP>, and surface roughness Ry of 30μm or more. The heat transfer face 2a has the uneven surfaces 13 linearly formed along the circulating direction of the refrigerant and an even surface 14 linearly formed between the uneven surfaces 13, 13. The total area of the uneven surface 13 is wider than the total area of the even surface 14. The heat transfer face 2a is made out of an aluminum member, and the uneven surface 13 is formed by etching the aluminum member. COPYRIGHT: (C)2006,JPO&NCIPI
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