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

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