Practical Investigation to Improve the Heat Transfer Performance in Elliptical Fins for Different Axis Ratios by Forced Convection

Hazim Abed Mohammed Al-Jewaree^1, and Dhia K. Suker²

¹Department of Petroleum Engineering, College of Engineering, AlKitab University, Kirkuk, Iraq

²Mechanical Engineering Department, Umm Al-Qura University, Mekkah, Saudi Arabia

Cite this paper:
Hazim Abed Mohammed Al-Jewaree and Dhia K. Suker. Practical Investigation to Improve the Heat Transfer Performance in Elliptical Fins for Different Axis Ratios by Forced Convection. American Journal of Mechanical Engineering. 2021; 9(1):18-23. doi: 10.12691/ajme-9-1-3

Abstract

All engineering industries have proven that there is a demand to maintain heat transfer and in many engineering production processes, an increase in the rate of thermal transfer is required.. The solution lies in adding solid bodies made externally from heat-conducting materials called fins, which in turn have been the subject of very large engineering research by changing shapes, lengths, axis, thicknesses, etc., in order to raise the efficiency of performance in heat transfer to avoid industrial problems and accidents. The materials type and surface area have direct affect of the heat transfer rate depends on the types of materials used and the surface area of the fin. One of the most popular choice is the radial annular fin due to the cylindrical primary surface where the performance of the fins is a function of many parameters, namely the heat transfer coefficient, the fin efficiency and the fins’ thermal resistance. In this research work, an experimental study to investigate the effect of fin heat transfer performance characteristics elliptical fin shape at differnt at its major and minor axis ratio (a/b) with different cooling air velocities. As a results, the optimum ratio is found to be for an elliptical shape fins for forced convection.

Keywords:
heat transfer performance natural convection elliptical fin and force convection

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References:

[1]	Behnia, M., Copeland, D., and Soodphadakee, D., “A Comparison of Heat Sink Geometries for Laminar Forced Convection,” Proceedings of The Sixth Intersociety Conference on Thermal and Thermo Mechanical Phenomena in Electronic Systems, Seattle, Washington, USA, May 27-30, pp. 310-315, 1998.
[2]	Li, Q., Chen, Z., Flechtner, U., and Warnecke, H. J.,, “Heat Transfer and Pressure Drop Characteristics in Rectangular Channels With Elliptical Pin Fins,” Int. J. Heat Fluid Flow, 19, pp. 245-250, 1998.
[3]	Chapman, C. L., Lee, S., and Schmidt, B. L., “Thermal Performance of an Elliptical Pin Fin Heat Sink,” Proceedings of the Tenth IEEE Semi-Therm Symposium, pp. 24-31, 1994.
[4]	Ota, T., Aiba, S., Tsuruta, T., and Kaga, M., “Forced Convection Heat Transfer From an Elliptical Cylinder,” Bull. JSME, 26(212), pp. 262-267, 1983.
[5]	Ota, T., Nishiyama, H., and Taoka, Y., “Heat Transfer and Flow Around an Elliptical Cylinder,” Int. J. Heat Mass Transfer, 27(10), pp. 1771-1779, 1984.
[6]	Poulikakos, A., and Bejan, A., “Fin Geometry for Minimum Entropy Generation in Forced Convection,” J. Heat Transfer, 104, pp. 616-623, 1982.
[7]	Jonsson, H., and Bjorn, P., “Experimental Comparison of Different Heat Sink Designs for Cooling of Electronics,” ASME J. Heat Transfer, 329(7), pp. 27-34, 1996.
[8]	Wirtz, R. A., Sohal, R., and Wang, H., “Thermal Performance of Pin-Fin Fan-Sink Assemblies,” J. Electron. Packag., 119, pp. 26-31, 1997.
[9]	Laor, K., and Kalman, H., “Performance and Temperature Distributions in Different Fins With Uniform and No uniform Heat Generation,” Inst. Chem. Eng. Symp. Ser., 1(129), pp. 335-342, 1992.
[10]	Mokheimer, E., M. A., “Performance of Annular Fins With Different Profiles Subject to Variable Heat Transfer Coefficient,” Int. J. Heat Mass Transfer, 45(17), pp. 3631-3642, 2002.
[11]	Uzol, O., Camci, C., “Elliptical Pin Fins as an Alternative to Circular Pin Fins for Gas Turbine Blade Cooling Applications Part 1: End wall Heat Transfer and Total Pressure Loss Characteristics,” The 46th ASME International Gas Turbine, Aero engine Congress and Exposition and Users Symposium, New Orleans, LA, 2001.
[12]	Nagarani, N., “Mechanical Engineering Department, Anna University of Technology”, Coimbatore, K.S.R College of the Technology, Tiruchengode- 637215,Tamilnadu,India, 2010.
[13]	Nigerian, N., et. al., International Journal of Engineering Science and Technology. 2(7), pp. 2839-2845, 2012.
[14]	Al-Jewaree, H. M., “Experimentally Investigate the Heat Transfer Performance of Annular Fins,” International Journal of Scientific Engineering and Technology (IJSET), 4(10), pp. 545-548, 2015.
[15]	Al-Jewaree, H. M., “Practically investigatr the influence of elliptical heat transfer performance at different axis ratio by free convection”. AlKitab Scientific Journal, 4, pp. 85-94, 2020.
[16]	Holman, F. P. and DeWitt, D. P., “Fundamentals of Heat and Mass Transfer, 4th Ed Willey, 1996.
[17]	Holman, J. P., “Experimental methods for engineers,” 6th Ed, McGraw-Hill, USA, 1994.
[18]	Incropera F.P., and DeWilh, D. P., “Fundamentals of Heat and Mass Transfer,” 14th Ed, 2011.
[19]	Incropera, F., DeWitt, D., “Introduction to Heat Transfer,” 4th Ed., Wiley, New York, 2002.
[20]	Cengel, Y. A., “Heat Transfer: A Practical Approach,” SI Units, 2nd Ed. 2004.