析湿工况下翅片管换热器翅片效率计算分析.pdf

文档介绍：No . 3, 2011, Sep .
7
6
REFRIGERATION
Vol. 30 ( Total No . 116 )
文章编号: ISSN1005- 9180 ( 2011) 03- 0076- 04
析湿工况下翅片管换热器翅片效率计算分析
戴绍碧
( 广东石油化工学院机电工程学院, 广东茂名 525000 )
[ 摘要] 分析了析湿工况下五种翅片效率模型与实验现象的吻合性, 结果表明: 全湿工况翅片效率对片基
温度与来流相对湿度不敏感, 部分湿工况翅片效率对片基温度与来流相对湿度十分敏感, 翅片效率计算应
区分干、部分湿、全湿工况, 并根据工况选用相应计算模型。
[ 关键词] 析湿工况; 翅片效率; 换热器
[ 中图分类号] TB657
5; TK172; TQ051
5
[ 文献标识码] A
Analysis on Fin Efficiency Formulas of Fin- and- Tube Heat Exchanger
Under Dehumidifying Conditions
DAI Shaobi
( Guangdong University of Petrochemical T echnology, M aoming 525000, Guangdong, China )
Abstract: This paper annalyses visualization and value based on five fin efficiecy formulas of fin- and- tube heat ex-
changers underdehumidifying condintions
Results showed that for fully wet conditon, the effect of relative himidiy and fin
base temperature on the fully wet fin efficiecy is small
For partially wet surface, a considerable influence of the relative
humidity and fin base temperature on the fin efficiency is encountered
Fin efficiecy formula should be elected based on fin
surface conditions
Keywords: Dehumidifying conditions; Fin efficiency; Heat exchanger
差。目前, 关于湿翅片效率的计算模型较多, 其中
0
前言得到广泛应用的有 Wang et al[ 2] 基于圆肋片, 建立
并求解了全湿工况下翅片表面传热控制微分方程
翅片管换热器广泛应用于制冷、空调及化工等,
得出了全湿工况下的翅片效率计算公式
领域。在制冷、空调工程中, 当翅片管换热器作为; McQuiston
与[ 3] 在一