Thermal Performance Analysis of Plate Fin Arrays with Different Perforations under Varying Reynolds Number

Md Lutfor Rahman^1, and Irfan Ahmed¹

¹Department of Mechanical Engineering, Bangladesh Army University of Science and Technology, Saidpur Cantonment, Bangladesh

Cite this paper:
Md Lutfor Rahman and Irfan Ahmed. Thermal Performance Analysis of Plate Fin Arrays with Different Perforations under Varying Reynolds Number. American Journal of Mechanical Engineering. 2023; 11(2):60-71. doi: 10.12691/ajme-11-2-1

Abstract

Heat transfer enhancement has been a major concern in modern days in designing heat generating equipment. In the present study experimental investigations has been carried out to analyze the thermal performance of plate fin arrays for solid, circular and hexagonal perforations along the length of the fin in different Reynolds number flow under steady state forced convection. The flow velocity was varied ranging from 4 ms^-1 to 12 ms^-1 and the experimental data were recorded after a certain period of time at a constant heat flux. The performance of plate fin as heat sink was tested and best result was found in case of plate fin with hexagonal perforation heat sink. Convective heat transfer coefficient, fin effectiveness, and fin efficiency were tested to have increased in hexagonal perforation for plate fin arrays. Thermal resistance seems to decrease in hexagonal perforation than circular perforation and solid fins. This study suggests that most important parameter that governs the performance of fin is the fin geometry and varied cross section i.e., perforations.

Keywords:
heat transfer enhancement experimental heat transfer study forced convection heat transfer perforated fin array

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References:

[1]	D.E. Metzger, C.S. Fan, S.W. Haley, Effects of pin shape and array orientation on heat transfer and pressure loss in pin fin arrays, J. Eng. Gas Turbines Power 106 (1984) 252-257.
[2]	Yunus A. Çengel, 2004, “Heat Transfer- A Practical Approach”, SI units 3rd Edition, Tata McGraw Hill Co., Pg. No.: 159.
[3]	Akshendra Soni, Study of Thermal Performance between Plate-fin, Pin-fin and Elliptical Fin Heat Sinks in Closed Enclosure under Natural Convection, International Advanced Research Journal in Science, Engineering and Technology, Vol. 3, Issue 11, November 2016.
[4]	Mehedi Ehteshum, Mohammad Ali, Md. Quamrul Islam, Muhsia Tabassum, Thermal and hydraulic performance analysis of rectangular fin arrays with perforation size and number, 6th BSME International Conference on Thermal Engineering (ICTE 2014).
[5]	Bayram Sahin, Alparslan Demir, Performance analysis of a heat exchanger having perforated square fins, ELSEVIER, Applied Thermal Engineering 28 (2008) 621-632.
[6]	A. A. Bhuiyan, A. K. M. Sadrul Islam, M. R. Amin, “Numerical study of 3D thermal and hydraulic characteristics of wavy fin-and-tube heat exchanger”, Frontiers in heat and mass Transfer (FHMT) 3 - 033006, 2012.
[7]	A. A. Bhuiyan, M. R. Amin, A. K. M. Sadrul Islam, “Three-Dimensional Performance Analysis of Plain Fin Tube Heat Exchangers in Transitional Regime”, Applied Thermal Engineering, Vol 50, Issue 1, pp 445-454, 2013.
[8]	A. A. Bhuiyan, M. R. Amin, R. Karim, A. K. M. Sadrul Islam, “Plate fin and tube heat exchanger modeling: Effects of performance parameters for turbulent flow regime”, International Journal of Automotive and Mechanical Engineering (IJAME), 9(1), pp. 1768-1781, 2014.
[9]	Giovanni Tanda, “Heat transfer and pressure drop in a rectangular channel with diamond-shaped elements”. In International Journal of Heat and Mass Transfer Volume 44, Issue 18, September 2001, Pages 3529-3541.