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Journal of Enhanced Heat Transfer

Theory and Application in High Performance Heat and Mass Transfer

ISSN for PRINT: 1065-5131

Institutional price:	$577.00
Issues per year:	4

Best Paper Award Selection - Editorial Board Site

2003, Volume10

124 pages

DOI: 10.1615/JEnhHeatTransf.v10.i1

Issue price - $138.00

An Experimental Investigation on the Airside Performance of Fin-and-Tube Heat Exchangers Having Radial Silt Fins

Baek Youn
Air Conditioner and Refrigerator Division, Samsung Electronics Co., Suwon, Korea

Young-Saeng Kim
Air Conditioner and Refrigerator Division, Samsung Electronics Co., Suwon, Korea

Hwan-Young Park
Air Conditioner and Refrigerator Division, Samsung Electronics Co., Suwon, Korea

Nae-Hyun Kim
Department of Mechanical Engineering, University of Incheon, 177 Dohwa-DongNam-Gu, Incheon, Korea

ABSTRACT

This article experimentally investigates the heat transfer and friction characteristics of slit-finned heat exchangers. The present fins have radial slits. Investigation has focused on the effect of fin pitch and slit geometry (slit height, slit width, etc.). Results show that the heat transfer coefficient increases as the fin pitch increases. The friction factor, however, decreases as the fin pitch increases. Possible reasons for this involve the slit pattern between neighboring fins. The slit height does not seem to have a significant effect on either the heat transfer coefficient or the friction factor as long as the slits protrude outside of the approaching boundary layer. The S4 fin, which has the longest and highest slits, yielded the largest heat transfer coefficient. Possible reasons for this involve the slit arrangements. A new correlation predicts 92.9% of the heat transfer coefficients and 100% of the friction factors within ±10%.