关键词:

开缝翅片, 析湿工况, 亲水层, 传热, 传质, 关联式

Abstract:

The airside heat and mass transfer characteristics of seven split fin-and-tube heat exchangers with hydrophilic coating were studied under dehumidifying conditions experimentally. The effects of fin pitch and inlet relative humidity on airside heat and mass transfer performance were investigated. The results indicated that the heat and mass transfer performance decreased with the increase of fin pitch. The heat transfer performance was insensitive to the change of inlet relative humidity, and the mass transfer became weaker with the rise of inlet relative humidity. Correlations were proposed to describe the heat and mass transfer characteristics. The Colburn heat transfer factors Jh correlation could describe 96.6% of experimental data and the Colburn mass transfer factors Jm correlation could describe 81.4% of experimental data with an error of ±15%.Correspondingly, the mean deviations of the proposed heat and mass transfer correlation were 5.3% and 8.5%, respectively.

Key words:

开缝翅片, 析湿工况, 亲水层, 传热, 传质, 关联式