Importance

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Abstract

In an evaporator for a vehicular air conditioner, the core width W is uniform over the entire region in the left-right direction. Further, the widths of all air-passing spaces in the left-right direction are equal to one another, the tube heights Ht of all refrigerant flow tubes are equal to one another, and the fin heights HF of all corrugated fins are equal to one another. The core width W, the tube pitch Tp (the distance between the thicknesswise centers of the refrigerant flow tubes located on the left and right sides of each air-passing space), the tube height Ht, and the fin height Hf are such that W=27 to 32 mm, Tp=4.3 to 5.5 mm, Ht=1.3 to 1.5 mm, Hf=3.0 to 4.0 mm, and Ht/Hf=0.325 to 0.500.

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First Claim