THE EFFECT OF FIN’S HEIGHT AND CIRCULAR PERFORATED ON THE NATURAL CONVECTION OF THE VERTICAL RECTANGULAR FINS

Ali A F Al-Hamadani ,Khaleel Saleem Jebur Ogaili ,Ahmed A.y Al-Waaly

doi:10.30772/qjes.v10i4.505

Ali A F Al-Hamadani , Khaleel Saleem Jebur Ogaili + Show 1 more

Open Access

https://doi.org/10.30772/qjes.v10i4.505

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Abstract

The safe operation of any device is necessary, but it requires a suitable condition such as dissipated the heat generated. A heat sink with vertical rectangular fins was improved using a circular perforated with diameter of 6mm for different fins height 6 cm, 8 cm and 10 cm. An experimental study was conducted to investigate the effect of circular perforated on the natural convection heat transfer of a vertical rectangular fin. Different numbers of circular perforated 2, 3 and 5 were studied. The results showed that the heat transfer for the height 6cm is higher as compared with 8cm and 10 cm. Moreover, the coefficient of heat transfer increases with the increased of the number of the circular perforation. For the fin height 6cm with five circular perforated, the heat transfer coefficient of the natural convection is 30 W/m2 oC.

Highlights

The enhancement of heat transfer by natural convection is an essential matter of thermal applications
The results demonstrate that the vertical plate with vertical fins gives the greatest performance for normal cooling
Different fin heights have been investigated with varying the size of the circular perforated

Summary

Introduction

The enhancement of heat transfer by natural convection is an essential matter of thermal applications. The reduction of the extreme heat rate from electronic devices is necessary to ensure steady and continuous safe operation. The heat transfer can be improved by increasing the heat transfer area between the heat transfer surface and the outside environment. The extended surfaces (fins) are used to increase heat transfer in many applications. The rectangular fins are frequently used because of their easy construction, inexpensive cost and active cooling capability. [1] studied different sets of rectangular fins with natural convection. The fin length and fin spacing was varied with constant thickness of 3 mm. The input heat supplied was varied from 25 W to 125 W. Burak Y. concluded that the best fin spacing is between 0.88 cm and 1.47 cm

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