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http://dx.doi.org/10.5762/KAIS.2015.16.7.4364

An Experimental Study on Air-Side Performance of Fin-and-Tube Heat Exchangers Having Compound Enhanced Fins  

Kim, Nae-Hyun (Division of Mechanical System Engineering Incheon National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.16, no.7, 2015 , pp. 4364-4374 More about this Journal
Abstract
In this study, heat transfer and friction characteristics of compound enhanced fin-and-tube heat exchangers were experimentally investigated. Louver-finned heat exchangers were also tested for comparison purpose. The effect of fin pitch on j and f factor was negligible. The j factor decreased as number of tube row increased. However, f factor was independent of number of tube row. Louver fin samples yielded higher j and f factors than compound enhanced fin samples. For one row, j and f factors of louver fin were 23% and 27% higher than those of compound enhanced fin. For two row, those were 11% and 8%, and for three row, those were 10% and 9%. However, heat transfer capacities at the same pressure drop of the compound enhanced fins were 6.4% for one row, 11.1% for two row and 13.6% for three row larger than those of louver fins, Existing louver fin correlation overpredicted the present j factors and underpredicted the present f factors.
Keywords
Compound enhanced fin; Heat transfer coefficient; Louver fin; Pressure drop;
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Times Cited By KSCI : 1  (Citation Analysis)
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