Investigations on theSpray Film Evaporation onthe Outside of a Single Horizontal-tube

Shen Yinqiu and Guo Yihu(Department of Chemical Engineering; Dalian Institute of Technology)

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Investigations on theSpray Film Evaporation onthe Outside of a Single Horizontal-tube

更新时间：2025-12-16

- Investigations on theSpray Film Evaporation onthe Outside of a Single Horizontal-tube
- CIESC Journal Issue 4, (1987)
- 作者机构：
  
  大连工学院化工系,大连工学院化工系
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 December 1987，
  
  Published：25 December 1987
- 稿件说明：
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Shen Yinqiu and Guo Yihu(Department of Chemical Engineering, Dalian Institute of Technology). Investigations on theSpray Film Evaporation onthe Outside of a Single Horizontal-tube[J]. CIESC Journal, 1987, (4).
DOI：

Shen Yinqiu and Guo Yihu(Department of Chemical Engineering, Dalian Institute of Technology). Investigations on theSpray Film Evaporation onthe Outside of a Single Horizontal-tube[J]. CIESC Journal, 1987, (4). DOI：

摘要

本文探讨了水平管喷淋式降膜蒸发的研究.本实验分别采用电加热和蒸汽加热方式

对不锈钢光滑管和电化学腐蚀多孔表面管进行研究

所用工作流体为脱离子水.除了表面几何情况的研究以外

还以液体进料速率(喷淋密度)、热通量的变化、多孔表面管的热处理情况、以及管内蒸汽速度作为研究的参变量.由于多孔表面管对液膜核状沸腾的促进作用

多孔表面管与光滑管相比

其强化作用是显著的.

Abstract

The present paper describes a study on the evaporation in a horizontal tube spray film evaporator. Single tubes

either electrically heated or steam heated

are used for the study. Two types of tube surface properties are considered

namely an electro-chemically etched porous tube surface and a smooth tube surface. The latter also serves as a reference De-ionized water is used as working fluid. Liquid feed rate

changes in the rate of heat flux

annealing treatment of the porous tubes and steam velocity in the tube are explored as operational variables. Compared with smooth tubes and pool boiling

porous tubes proved to give much better performance as such tubes tended to promote nucleate boiling of the film.

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