Experimental Study on Horizontal Cylinders with Triangular Fins under Natural Convection

Gu-Won Lee, Hyun Jung Kim and Dong-Kwon Kim
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Gu-Won Lee: Department of Mechanical Engineering, Ajou University, Suwon 443-749, Korea
Hyun Jung Kim: Department of Mechanical Engineering, Ajou University, Suwon 443-749, Korea
Dong-Kwon Kim: Department of Mechanical Engineering, Ajou University, Suwon 443-749, Korea

Energies, 2018, vol. 11, issue 4, 1-15

Abstract: In this study, thermal resistances of horizontal cylinders with triangular fins were measured in regard to fin numbers, fins heights, and temperature differences. Thereafter, an empirical correlation was proposed and validated for predicting the Nusselt numbers under the following conditions: Rayleigh number, 200,000–1,000,000; fin aspect ratio, 1.6–5.0; and fin number, 9–72. Finally, with the proposed correlation, the effects of fin numbers, fins heights, and fin thicknesses on the thermal resistances of the horizontal cylinders with triangular fins were investigated. It was shown that the thermal resistance generally increases as the fin number, fin height, and fin thickness increase. It is expected that horizontal cylinders for various cooling devices with triangular fins can be designed based on the findings of the present study.

Keywords: finned cylinders; natural convection; Nusselt number (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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