化工学报 ›› 2009, Vol. 60 ›› Issue (10): 2438-2445.

• 传递现象 • 上一篇    下一篇

析湿工况下波纹翅片管换热器空气侧换热与压降特性

刘金平;戴绍碧;叶立平   

  1. 华南理工大学电力学院
  • 出版日期:2009-10-05 发布日期:2009-10-05

Air-side heat transfer and friction characteristics of wavy fin-and-tube heat exchangers under dehumidifying conditions

LIU Jinping; DAI Shaobi;YE Liping   

  • Online:2009-10-05 Published:2009-10-05

摘要:

研究了析湿工况下1、2排波纹翅片管换热器空气侧换热与压降特性,结果表明:管排数对空气侧换热特性的影响明显,2排管的换热因子要比1排管的换热因子大约60%,而管排数对空气侧摩擦因数影响则不明显;翅片效率随冷水入口温度的降低而增加,随入口风速的增加而快速降低;与其他学者的预测模型相比,换热因子偏小30%。

关键词:

波纹翅片, 析湿工况, 换热器, 压降, 翅片效率

Abstract:

The air-side heat transfer and friction characteristics of one-row and two-row wavy fin-and-tube heat exchanger under dehumidifying condition were studied experimentally.The results showed that the heat transfer factor was strongly related to the number of rows, and the heat transfer factor of tworow heat exchanger was 60% greater than that of onerow one.The effect of the number of rows on the friction factors could be negligible.Fin efficiency increased as inlet water temperature decreased, while it decreased as wind velocity increased.The experimental value of heat transfer factor was 30% lower than that predicted by the Pirompugd correlation .

Key words:

波纹翅片, 析湿工况, 换热器, 压降, 翅片效率