| 摘要 |
With a fin width FW in the air-flow direction, fin thickness FT, fin pitch FP, fin height FH, and tube element height TW, dimensional relationships are 50 mm</=FW</=65 mm, 0.06 mm</=FT</=0.10 mm, 2.5 mm</=FP</=3.6 mm, 7.0 mm</=FH 9.0 mm, and 2.0 mm</=TW</=2.7 mm. Provided are an optimum fin shape and tube element thickness in which a heat exchange efficiency and an air-flow resistance are well balanced, thereby ensuring an improvement in the heat exchange efficiency and the reduction in size of the heat exchanger.
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