Experimental Study on Horizontal Cylinders with Triangular Fins under Natural Convection
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: Raylei...
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doaj-d0d9c94ec36043f2a26be23d1898202e2020-11-24T21:06:37ZengMDPI AGEnergies1996-10732018-04-0111483610.3390/en11040836en11040836Experimental Study on Horizontal Cylinders with Triangular Fins under Natural ConvectionGu-Won Lee0Hyun Jung Kim1Dong-Kwon Kim2Department of Mechanical Engineering, Ajou University, Suwon 443-749, KoreaDepartment of Mechanical Engineering, Ajou University, Suwon 443-749, KoreaDepartment of Mechanical Engineering, Ajou University, Suwon 443-749, KoreaIn 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.http://www.mdpi.com/1996-1073/11/4/836finned cylindersnatural convectionNusselt number |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Gu-Won Lee Hyun Jung Kim Dong-Kwon Kim |
spellingShingle |
Gu-Won Lee Hyun Jung Kim Dong-Kwon Kim Experimental Study on Horizontal Cylinders with Triangular Fins under Natural Convection Energies finned cylinders natural convection Nusselt number |
author_facet |
Gu-Won Lee Hyun Jung Kim Dong-Kwon Kim |
author_sort |
Gu-Won Lee |
title |
Experimental Study on Horizontal Cylinders with Triangular Fins under Natural Convection |
title_short |
Experimental Study on Horizontal Cylinders with Triangular Fins under Natural Convection |
title_full |
Experimental Study on Horizontal Cylinders with Triangular Fins under Natural Convection |
title_fullStr |
Experimental Study on Horizontal Cylinders with Triangular Fins under Natural Convection |
title_full_unstemmed |
Experimental Study on Horizontal Cylinders with Triangular Fins under Natural Convection |
title_sort |
experimental study on horizontal cylinders with triangular fins under natural convection |
publisher |
MDPI AG |
series |
Energies |
issn |
1996-1073 |
publishDate |
2018-04-01 |
description |
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. |
topic |
finned cylinders natural convection Nusselt number |
url |
http://www.mdpi.com/1996-1073/11/4/836 |
work_keys_str_mv |
AT guwonlee experimentalstudyonhorizontalcylinderswithtriangularfinsundernaturalconvection AT hyunjungkim experimentalstudyonhorizontalcylinderswithtriangularfinsundernaturalconvection AT dongkwonkim experimentalstudyonhorizontalcylinderswithtriangularfinsundernaturalconvection |
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1716765221282906112 |