Condensation inside and outside smooth and enhanced tubes: a review of recent research
Condensation inside and outside smooth and enhanced tubes: a review of recent research
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DOI：
10.1016/s0140-7007(02)00150-0
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发表时间：
2003-06
期刊：
影响因子：
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通讯作者：
A. Cavallini;Giuseppe Censi;D. Col;L. Doretti;G. Longo;L. Rossetto;C. Zilio
中科院分区：
文献类型：
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作者：
A. Cavallini;Giuseppe Censi;D. Col;L. Doretti;G. Longo;L. Rossetto;C. Zilio
水平管内部和外部的冷凝传热在制冷、空调和热泵应用中发挥着关键作用。近年来，由于采用替代工作流体和热交换器的新型增强表面，冷凝传热科学受到了严重挑战。众所周知且广泛建立的用于预测冷凝过程中传热的半经验相关性在一些新应用中可能表现得相当不准确，因此现在正在致力于流动条件的表征以及冷凝蒸汽传热和压降的相关预测程序，即使是非共沸混合物的形式。本文批判性地回顾了公开文献中出现的与空调和制冷行业冷凝器热设计相关的最新结果；管内和管束冷凝均被考虑，与平面和增强表面的使用相关。
Condensation heat transfer, both inside and outside horizontal tubes, plays a key role in refrigeration, air conditioning and heat pump applications. In the recent years the science of condensation heat transfer has been severely challenged by the adoption of substitute working fluids and new enhanced surfaces for heat exchangers. Well-known and widely established semiempirical correlations to predict heat transfer during condensation may show to be quite inaccurate in some new applications, and consequently a renewed effort is now being dedicated to the characterisation of flow conditions and associated predictive procedures for heat transfer and pressure drop of condensing vapours, even in the form of zeotropic mixtures. This paper critically reviews the most recent results appeared in the open literature and pertinent to thermal design of condensers for the air conditioning and refrigeration industry; both in-tube and bundle condensation are considered, related to the use of plain and enhanced surfaces.