Experimental investigation of fin heat transfer characteristics in different condition

Document Type : Research Article

Authors

1 Assistant professor, Department of Mechanical Engineering, Khatam al-Anbia Air Defense University, Tehran, Iran

2 M.Sc., Department of Mechanical Engineering, Khatam al-Anbia Air Defense University, Tehran, Iran

3 B.Sc., Department of Mechanical Engineering, Khatam al-Anbia Air Defense University, Tehran, Iran

Abstract

The application of heat sinks as an extended surface has a significant role in the cooling of many industrial equipment. In this study, the effect of the parameters of heat transfer of the fins such as the effect of practical geometry, wall heat flux, coolant velocity and its impact angle with the fin is experimentally investigated. The geometry includes rectangular and triangular shapes, the applied heat flux range is about 4.6-18.5 (kw/m2), the coolant velocity is between 1-2 (m/s), and the angle between the fin position and cooling flow direction were chosen in 0º, 45° and 90º. Also, the air as a primary cooling flow is considered, while aluminum as a practical and high conductivity metal was chosen for fin structure material. Finally, it is found that the convective heat transfer rate on the triangular fin is higher than the rectangular type, while the dissipation heat rate from the wall by using the rectangular fin is more than the other. In addition, the pressure drop was estimated by comparing the cooling flow velocity related to each fin in different positions. Also, the comparison between the efficiency of rectangular and triangular fins shows that the efficiency of rectangular fins is more than triangular and also it is found that the effect of impact angle on the efficiency of rectangular and triangular fins can be negligible.

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AUT Journal of Mechanical Engineering
Volume 8, Issue 2
June 2024
Pages 5-5

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