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The Effects of Vapor Velocity and Tube Bundle Geometry on Condensation in Shell-Side Refrigeration Condensers 蒸汽速度和管束几何形状对壳程制冷冷凝器冷凝的影响
关于水平管束壳侧冷凝的论文通常假定管束中所有管子上的冷凝系数与蒸汽速度为零的单根管子上的冷凝系数相同。当包含“行效应”修正时,修正系数通常基于蒸汽速度为零的垂直行水平平管的经验数据。众所周知,蒸汽速度会影响单管和管束中的冷凝系数。本文综述了最近定义冷凝水淹没(row效应)和蒸汽切变单独影响的工作。 本研究还探讨了当存在蒸汽切变和淹没效应时,修正值是如何变化的。该调查包括平面翅片管和整体翅片管。关注的关键问题是为壳程制冷剂冷凝器确定适当的修正系数。单位:双重出版者:ASHRAE年份:1984作者:R.L.韦布页数:21页:39-59引文:ASHRAE交易,1984年,第90卷,pt。1B,亚特兰大,佐治亚州,引文:研讨会论文,亚特兰大,佐治亚州,1984年
Papers dealing with shell-side condensation on horizontal tube banks frequently assume that the condensation coefficient on all tubes in the bank is the same as that on a single tube with zero vapor velocity. When “row-effect” corrections are included, the correction factor is normally based on empirical data for a vertical row of horizontal, plain tubes with zero vapor velocity. It is known that vapor velocity can affect the condensation coefficient on a single tube and on tubes in a bundle. This paper surveys recent work to define the separate effects of condensate inundation (the row-effect), and vapor shear. This study also examines how the corrections change when both vapor shear and inundation effects are present. The survey includes both plain and integral-fin tubes. The key issue of interest is to establish appropriate correction factors for shell-side refrigerant condensers. Units: Dual Publisher: ASHRAE Year: 1984 Author: R.L. Webb Number of Pages: 21 Pages: 39-59 Citations: ASHRAE Transactions, 1984, vol. 90, pt. 1B, Atlanta, GA
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