圆形翅片； 传热； 换热器； 翅片效率；

Round fin; Heat transfer; Exchanger; Fin efficiency;

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椭圆管翅式换热器的翅片效率工程上通常是将其转换为圆形翅片管来计算。

The fin efficiency of an oval finned heat exchanger is usually calculated by converting the oval finned tube to an equivalent round one in the engineering field.

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研究发现，换热器结霜引起了翅片效率、空气流通率及翅片性能的显著降低，同时还伴随着空气侧压力降上升。

It is shown that the fin efficiency, air flow-rate, and fin performance are significantly decreased while pressure of the air side is increased when frosting occurs at the exchanger.

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