换热器的翅片间距和翅片厚度是影响换热器换热和压降特性的重要因素。

The fin pitch and fin thickness of the exchanger are the key parameters for heat transfer and pressure drop.

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试验结果表明，新型开窗翅片的翅片间距对表面传热因子和阻力性能影响较为显著。

The results show that the j and f factors increase with the fin space and fin length decreasing, and the fin space has more obvious effect on the area of optimization factor.

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然后通过三种限制条件对不同翅片间距、不同管排数和不同管数下的换热板芯的传热性能进行了比较。

The comparison of heat transfer performance with three different fin spacing, three different Numbers of tube rows and three different Numbers of tubes under three constraints is carried out.

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