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首页> 外文期刊>International Journal of Heat Exchangers >New analogy relation of heat and mass transfer in wide range of non-condensing gas concentrations
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New analogy relation of heat and mass transfer in wide range of non-condensing gas concentrations

机译：各种非冷凝气体浓度下传热传质的新类比关系

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摘要

For condensation from a steam-gas mixture, analogy correlations of heat and mass transfer taking account of the mass absorption effect on the wall were proposed in the previous study. These correlations gave good predictions on heat exchanger calculations when the concentration of non-condensing gas was more than 75%. The analogy method is preferable for the design of heat exchangers where the heat transfer correlations have been empirically established. However, at the concentration less than 75%, some modification was necessary on the mass transfer correlation because it was originated and estimated from the heat transfer correlation without condensation. Condensation heat transfer on a row of horizontal stainless steel tubes was investigated experimentally in the non-condensing gas concentration of 0～78% and new analogy relation covering the wide range was proposed.
机译：对于蒸汽-气体混合物的冷凝，在先前的研究中提出了热量和传质的类比关系，其中考虑了壁上的质量吸收效应。当非冷凝气体的浓度超过75％时，这些相关性可为换热器的计算提供良好的预测。对于已经根据经验建立了传热相关性的热交换器的设计，类比方法是优选的。然而，在浓度小于75％时，传质相关性需要进行一些修改，因为它是由传热相关性产生和估算的，没有凝结。在非冷凝气体浓度为0〜78％的情况下，对一排水平不锈钢管上的冷凝传热进行了实验研究，提出了涵盖广泛范围的新的类比关系。

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