A constant heat transfer coefficient is often assumed in the computation of the temperature distribution along an extended surface. This assumption permits the use of a well-established closed form analytical solution thus simplifying the mathematical complexity of the conservation energy equation. For certain fin geometries, this assumption will lead to poor prediction of the thermal performance of the extended surface especially for tapered and triangular fins. In this study, a generalized analytical solution was developed that permits the computation of heat loss from an extended surface based on variable heat transfer coefficient, fin geometry, and surface curvature. The influence of these parameters on fin efficiency for typical fins is reported.
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September 2003
Technical Papers
Effect of Variable Heat Transfer Coefficient, Fin Geometry, and Curvature on the Thermal Performance of Extended Surfaces
A. G. Agwu Nnanna,
A. G. Agwu Nnanna
Department of Engineering, Purdue University Calumet, Hammond, IN 46323-2094
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A. Haji-Sheikh ,, ASME Fellow,
A. Haji-Sheikh ,, ASME Fellow
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D. Agonafer,, ASME Fellow
D. Agonafer,, ASME Fellow
Department of Mechanical and Aerospace Engineering, The University of Texas at Arlington, Arlington, TX 76019–0023, USA
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A. G. Agwu Nnanna
Department of Engineering, Purdue University Calumet, Hammond, IN 46323-2094
D. Agonafer,, ASME Fellow
Department of Mechanical and Aerospace Engineering, The University of Texas at Arlington, Arlington, TX 76019–0023, USA
Contributed by the Electronic and Photonic Packaging Division for publication in the JOURNAL OF ELECTRONIC PACKAGING. Manuscript received September 2002. Associate Editor: B. Courtois.
J. Electron. Packag. Sep 2003, 125(3): 456-460 (5 pages)
Published Online: September 17, 2003
Article history
Received:
September 1, 2002
Online:
September 17, 2003
Citation
Agwu Nnanna, A. G., Haji-Sheikh , , A., ASME Fellow, and Agonafer, , D., ASME Fellow (September 17, 2003). "Effect of Variable Heat Transfer Coefficient, Fin Geometry, and Curvature on the Thermal Performance of Extended Surfaces ." ASME. J. Electron. Packag. September 2003; 125(3): 456–460. https://doi.org/10.1115/1.1602711
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