An Experimental Investigation of Heat Transfer of Free Convection on Triangular Fins in Order to Optimize the Arrangement of Fins
International Journal of Science, Technology and Society
Volume 2, Issue 5, September 2014, Pages: 152-160
Received: Sep. 5, 2014;
Accepted: Sep. 16, 2014;
Published: Sep. 30, 2014
Views 3602 Downloads 189
Hamid Reza Goshayeshi, Department of Mechanical Engineering, Mashhad Branch, Islamic Azad University, Mashhad, Iran
Reza Vafa Toroghi, Department of Mechanical Engineering, Mashhad Branch, Islamic Azad University, Mashhad, Iran
In this study, the effect of free convection heat transfer on a vertical surface on which the triangular fins are vertically placed has been investigated numerically and experimentally. In order to numerically solve the system of governing equations, the finite volume method has been used, and the analysis has been conducted by FLUENT software. Free convection heat transfer in four groups of built fins has been tested using the available testing tool. Results show that increasing the fins increases the coefficient of heat transfer of free convection. In addition, increasing the distance decreases the heat transfer at first until the optimum distance is achieved, and then increasing the distance increases the amount of heat transfer.
Hamid Reza Goshayeshi,
Reza Vafa Toroghi,
An Experimental Investigation of Heat Transfer of Free Convection on Triangular Fins in Order to Optimize the Arrangement of Fins, International Journal of Science, Technology and Society.
Vol. 2, No. 5,
2014, pp. 152-160.
Brodowicz, K., "An Analysis of Laminar Free Convection around Isothermal Vertical Plate," International Journal of Heat Mass Transfer, Vol. 11, pp. 201-209, 1968.
J.D. Hellums and S.W. Churchill, "Transient and steady state free and natural convection, Numerical Solutions: Part I. The Isothermal Vertical Plate," American Institute of Chemical Engineers Journal, Vol 8(5), pp. 690-691, 1962.
Pretot, S., Zeghmati, B., and Le Palec, G., "Theoretical and Experimental Study of Natural Convection on a Horizontal Plate," International Journal of Applied Thermal Engineering, Vol. 20, pp. 873-891, 2000.
Comunelo, R., and Güths, S., "Natural Convection at Isothermal Vertical Plate: Neighborhood Influence," 18th International Congress of Mechanical Engineering, Ouro Preto, 2005.
Yüncü H., and Anbar G., "An Experimental Investigation on Performance of Rectangular Fins on a Horizontal Base in Free Convection Heat Transfer," International Journal of Heat and Mass Transfer, Vol. 33, pp. 507-514, 1998.
Saikhedkar N.H, Sukhatme S.P., "Heat transfer from rectangular cross-sectioned vertical fin arrays," in: Proceedings of the sixth national heat and mass transfer conference, HMT,PP. 9-81, 1981.
Guglielmini G., Nannel E., Tanda G., "Natural convection and radiation heat transfer from staggered vertical fin," Heat Mass Transfer 30, 1941-1948, 1987.
Rammohan Rao, Venkateshan S.P., Experimental study of free convection and radiation in horizontal fin arrays, Int. J. Heat Mass Transfer 39 ,779-789,1996.
Rao, V. D., Naidu, S.V., Rao, B.G., and Sharma, K.V., “Heat Transfer from a Horizontal Fin Array by Natural Convection and Radiation a Conjugate Analysis”, Int. J. Heat and Mass Transfer. Vol. 49, pp. 3379–3391, (2006).
Naserian, M., Experimental investigation on V type fins. MSc Theses. Mashad Azad University, 2010.
Fahimineya, M Experimental investigation on V type fins. MSc Theses. Mashad Azad University 2010.
Mokheimer EMA.," Performance of annular fins with different profiles subject to variable heat transfer coefficient". Int J Heat Mass Transf,3631–42, 2002.
Gardner KA. Efficiency of extended surface. ASME J Heat Transf,621–31, 1945.
Ullman A, Kalman H.," Efficiency and optimiz dimensions of annular fins of different cross- section shapes". Int J Heat Mass Transf,1105–10,1989.
Karagiozis A; Raithby GD; Hollands KGT "Natural convection heat transfer from arrays of isothermal triangular fins in air". ASME J Heat Transfer 116: 105±110. (1994).
Bert, C.W., "Application of differential transform method to heat conduction in tapered fins". J.Heat Transfer 124, 208–209, 2002.
Moitsheki.,"Steady one-dimensional heat flow in a longitudinal triangular and parabolic fin".3971-3980.2011 Elsevier.
T.H. Ji, S.Y. Kim, J.M. Hyun, Pressure drop and heat transfer correlations for triangular folded fin heat sinks, IEEE Trans. Compon. Packaging Technol. 30 (1).(2007) 3–8.
C. Sun, Y. Bo, H.F. Oztop, Y. Wang, J. Wei, Int. J.Heat Mass Transf.54, 894–909 (2011).
Worachest., Somchai.," Partially wet fin efficiency for the longitudinal fins of rectangular ,triangular, concave parabolic, and convex parabolic profiles".1424-1442.2013.
Gray DD, Giorgini ., 1976, The validity of the boussinesq approximation for liquids and gases, International Journal of Heat and Mass Transfer 19: 545-551.
Patankar SV,1980, “Numerical Heat Transfer and Fluid Flow,” McGraw-Hill, New York.