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Energies 2016, 9(6), 391;

Experimental Study of Natural Convection Cooling of Vertical Cylinders with Inclined Plate Fins

Department of Mechanical Engineering, Ajou University, Suwon 443-749, Korea
Author to whom correspondence should be addressed.
Academic Editors: Vincent Lemort and Samuel Gendebien
Received: 12 April 2016 / Revised: 13 May 2016 / Accepted: 17 May 2016 / Published: 24 May 2016
(This article belongs to the Special Issue Advanced Heating and Cooling Techniques)
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In this paper, natural convection from vertical cylinders with inclined plate fins is investigated experimentally for use in cooling electronic equipment. Extensive experimental investigations are performed for various inclination angles, fin numbers, and base temperatures. From the experimental data, a correlation for estimating the Nusselt number is proposed. The correlation is applicable when the Rayleigh number, inclination angle, and fin number are in the ranges 100,000–600,000, 30°–90°, and 9–36, respectively. Using the correlation, a contour map depicting the thermal resistance as a function of the fin number and fin thickness is presented. Finally, the optimal thermal resistances of cylinders with inclined plate fins and conventional radial plate fins are compared. It is found that that the optimal thermal resistance of the cylinder with inclined fins is 30% lower than that of the cylinder with radial plate fins. View Full-Text
Keywords: nusselt number; natural convection; inclined plate fin nusselt number; natural convection; inclined plate fin

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Lee, J.B.; Kim, H.J.; Kim, D.-K. Experimental Study of Natural Convection Cooling of Vertical Cylinders with Inclined Plate Fins. Energies 2016, 9, 391.

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