Generalized heat-transfer and fluid-flow correlations for corrugated louvered fins

作者：Ryu Kijung; Lee Kwan Soo^*

来源：International Journal of Heat and Mass Transfer, 2015, 83: 604-612.

DOI：10.1016/j.ijheatmasstransfer.2014.12.044

• Corrugated louvered fin
• Colburn factor
• Friction factor
• Flow efficiency
• Correlation
• CFD

We report heat-transfer and fluid-flow correlations to describe the performance of heat exchangers that use corrugated louvered fins. Friction factor f and Colbum factor j were investigated with respect to the ratio of the fin pitch to the louver pitch (F-p/L-p). Whereas previous correlations cannot be applied for F-p/L-p > 1, our fand j correlations can be utilized in a wide range of F-p/L-p which is not only to F-p/L-p < 1, but also to F-p/L-p > 1, for 100 < Re < 3000. We also derived flow efficiency eta correlation which is applicable for 0.3 < L-p sinL(alpha)/F-p < 0.7, where L-alpha, is the louver angle, in 100 < Re < 3000 within an error of +/- 15%.

• 出版日期2015-4