- Volume 16 Issue 7
DOI QR Code
An Experimental Study on Air-Side Performance of Fin-and-Tube Heat Exchangers Having Compound Enhanced Fins
복합 전열 촉진 핀이 적용된 핀-관 열교환기의 성능에 대한 실험적 연구
- Kim, Nae-Hyun (Division of Mechanical System Engineering Incheon National University)
- 김내현 (인천대학교 기계시스템공학부)
- Received : 2015.03.03
- Accepted : 2015.07.16
- Published : 2015.07.31
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.
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