地铁站板式蒸发冷却器叉流条件下传热传质特性

蒋斌; 王子云; 付祥钊; 王勇

doi:10.11835/j.issn.1674-4764.2011.02.020

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地铁站板式蒸发冷却器叉流条件下传热传质特性

更新时间：2023-11-28

- 地铁站板式蒸发冷却器叉流条件下传热传质特性
- Subway Station Plate Evaporative Cooler Heat and Mass Transfer of Falling Film under Gasliquid Crossflow Condition
- 土木与环境工程学报（中英文） 2011年33卷第2期页码：101-105
- 作者机构：
  
  1. 西南科技大学土木工程与建筑学院,四川,绵阳,621010
  2. 重庆大学三峡库区生态环境教育部重点实验室,重庆,400045
  3. 四川大学建筑与环境学院,四川,成都,610065
- 作者简介：
- 基金信息：
  
  国家“十一五”科技支撑计划项目(2006BAJ01A063)
- DOI：10.11835/j.issn.1674-4764.2011.02.020
  中图分类号：
- 纸质出版：2011
- 稿件说明：
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蒋斌, 王子云, 付祥钊, 等. 地铁站板式蒸发冷却器叉流条件下传热传质特性[J]. 土木与环境工程学报（中英文）, 2011,33(2):101-105.

JIANG Bin, WANG Zi yun, FU Xiang zhao, et al. Subway Station Plate Evaporative Cooler Heat and Mass Transfer of Falling Film under Gasliquid Crossflow Condition[J]. Journal of Civil and Environmental Engineering, 2011, 33(2): 101-105.
蒋斌, 王子云, 付祥钊, 等. 地铁站板式蒸发冷却器叉流条件下传热传质特性[J]. 土木与环境工程学报（中英文）, 2011,33(2):101-105. DOI： 10.11835/j.issn.1674-4764.2011.02.020.

JIANG Bin, WANG Zi yun, FU Xiang zhao, et al. Subway Station Plate Evaporative Cooler Heat and Mass Transfer of Falling Film under Gasliquid Crossflow Condition[J]. Journal of Civil and Environmental Engineering, 2011, 33(2): 101-105. DOI： 10.11835/j.issn.1674-4764.2011.02.020.

摘要

在气液叉流条件下

采用非接触式红外热成像测温方法

就不同气相雷诺数和液膜雷诺数对地铁站板式蒸发冷却器液膜传热传质特性影响进行了实验研究

结果表明：对于确定的被冷却水温

在液膜雷诺数增加的过程中

液膜厚度逐渐增加

进出口温差逐渐减小

削弱液膜换热

但雷诺数上升使得液膜湍动强度增强

强化了液膜换热

在这2个因素的协同作用下

存在最佳液膜流动雷诺数

使得液膜的换热热阻最小

传质最强

换热系数最大.

Abstract

With the influence of the different gas Reynolds number and liquid Reynolds number on falling film heat and mass transfer of subway station plate evaporative cooler

the experiment was carried out by noncontact infrared thermal imaging technology under gasliquid crossflow condition. The results indicated that during the increasing of liquid Reynolds number the thickness of liquid film increased and the temperature difference between liquid film inlet and outlet decreased in determined heating water temperature which weakened the heat transfer of liquid film. However

the increase of liquid Reynolds number strengthened the liquid film turbulence that enhanced heat transfer. Under the synergistic effect of these two factors

there was an optimal liquid Reynolds number which minimize thermal resistance and maximize heat and mass transfer coefficient of liquid film.

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