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http://dx.doi.org/10.5762/KAIS.2015.16.6.3698

Air-Side Performance of Fin-and-Tube Heat Exchangers Having Non-Symmetric Slit Fins Under Wet Condition  

Kim, Nea-Hyun (Division of Mechanical System Engineering, Incheon National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.16, no.6, 2015 , pp. 3698-3707 More about this Journal
Abstract
In this study, wet surface heat transfer and friction characteristics of non-symmetric slit-finned heat exchangers are experimentally investigated. Louver-finned heat exchangers are also tested for comparison purpose. The effect of fin pitch on j and f factor is negligible. Louver fin samples yield higher j and f factors than slit fin samples. For one row, j and f factors of louver fin are 27% and 31% higher than those of slit fin. For two row, j and f factors of louver fin are 15% and 30% higher. Both j and f factor decrease as the number of tube row increases. For one row, average j/f ratios of slit fin samples are 3.4% larger than those of louver fin samples. For two row, average j/f ratios of slit fin samples are 11.5% larger. A new correlation was developed using the present data.
Keywords
Heat transfer coefficient; Pressure drop; Slit fin; Wet surface;
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Times Cited By KSCI : 1  (Citation Analysis)
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