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首页> 外文期刊>International Journal of Heat Exchangers >Application of Leveque Analogy to Offset Strip-Fin Surfaces for Prediction of Heat Transfer Characteristics
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Application of Leveque Analogy to Offset Strip-Fin Surfaces for Prediction of Heat Transfer Characteristics

机译：Leveque类比在偏移带状翅片表面预测传热特性中的应用

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摘要

Offset strip fins are used in Compact Heat Exchangers. A new technique for the prediction of heat transfer characteristics of these surfaces has been established. The method utilizes an analogy between heat and momentum transfer proposed for short thermally developing laminar flow. The present work exploits the intuition that the analogy can be utilized for any repeated flow structure with heat transfer from surfaces that are also repetitive in array. In the offset strip fin geometry, the original form of this analogy shows a constant bias, which depends on the fin geometry. This leads to the incorporation of the fin geometrical parameters to a new analogy equation resulting in a generalized form of equation for the entire range of offset strip fins. The results clearly indicate that the heat transfer characteristics of offset strip fin surfaces could be predicted by measuring pressure drop across them alone.
机译：胶条翅片用于紧凑型热交换器。已经建立了预测这些表面的传热特性的新技术。该方法利用了热和动量传递之间的类比，该类比建议用于短时热发展的层流。本发明利用这样的直觉，即该类比可用于任何重复的流动结构，其具有从在阵列中也是重复的表面传热。在偏置带状翅片的几何形状中，这种类比的原始形式显示出恒定的偏差，该偏差取决于翅片的几何形状。这导致将鳍的几何参数合并到一个新的类比方程中，从而在偏移带状鳍的整个范围内形成了方程的广义形式。结果清楚地表明，可以通过仅测量横穿翅片表面的压降来预测偏翅片翅片表面的传热特性。

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