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TECHNICAL NOTES

Performance and Optimization Analysis for Fins of Straight Taper With Simultaneous Heat and Mass Transfer

[+] Author and Article Information
B. Kundu

Department of Mechanical Engineering, Faculty of Engineering and Technology, Jadavpur University, Kolkata—700 032, India

P. K. Das

Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur—721302, India

J. Heat Transfer 126(5), 862-868 (Nov 16, 2004) (7 pages) doi:10.1115/1.1798911 History: Received February 07, 2001; Revised June 03, 2004; Online November 16, 2004
Copyright © 2004 by ASME
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References

Wu,  G., and Bong,  T. Y., 1994, “Overall Efficiency of a Straight Fin With Combined Heat and Mass Transfer,” ASHRAE Trans., Part I, pp. 367–374.
Threlkeld, J. L., 1970, Thermal Environmental Engineering, Prentice-Hall, Englewood Cliffs, NJ.
Chilton,  T. H., and Colburn,  A. P., 1934, “Mass Transfer (Absorption) Coefficients,” Ind. Eng. Chem., 26, pp. 1183–1187.
McQuiston,  F. C., 1975, “Fin Efficiency With Combined Heat and Mass Transfer,” ASHRAE Trans., 81, pp. 350–355.
Elmahdy,  A. H., and Biggs,  R. C., 1983, “Efficiency of Extended Surfaces With Simultaneous Heat and Mass Transfer,” ASHRAE Trans., 89, Part 1A, pp. 135–143.
Coney,  J. E. R., Kazeminejad,  H., and Sheppared,  C. G. W., 1989, “Dehumidification of Air on a Vertical Rectangular Fin: A Numerical Study,” Proc. Inst. Mech. Eng., Part C: Mech. Eng. Sci., 203, pp. 165–175.
Toner,  A., Killic,  A., and Onat,  K., 1983, “Comparison of Rectangular and Triangular Fins When Condensation Occurs,” Warme-und Stoffubertrangung,17, pp. 65–72.
Kundu,  B., 2002, “Analytical Study of the Effect of Dehumidification of Air on the Performance and Optimization of Straight Tapered Fins,” Int. Commun. Heat Mass Transfer, 29, pp. 269–278.
Kazeminejad,  H., Yaghoubi,  M. A., and Sepehri,  M., 1993, “Effect of Dehumidification of Air on the Performance of Eccentric Circular Fin,” Proc. Inst. Mech. Eng., 207, pp. 141–146.
Killic,  A., and Onat,  K., 1981, “The Optimum Shape for Convecting Rectangular Fins When Condensation Occurs,” Warme-und Stoffubertragung,15, pp. 125–133.
Kundu,  B., and Das,  P. K., 2002, “Performance Analysis and Optimization of Straight Taper Fins With Variable Heat Transfer Coefficient,” Int. J. Heat Mass Transfer, 45, pp. 4739–4751.
Whittaker, E. I., and Watson, G. N., 1965, A Course of Modern Analysis, Cambridge University Press, Cambridge.
Stocker, W. F., 1989, Design of Thermal System, McGraw-Hill, New York.
Mathews, J. H., 1998, Numerical Methods for Mathematics, Science and Engineering, Prentice-Hall of India Private Limited, New Delhi.
Casarosa,  C., and Franco,  A., 2001, “On the Optimum Thermal Design of Individual Longitudinal Fins With Rectangular Profile,” Heat Transfer Engineering,22, pp. 51–71.

Figures

Grahic Jump Location
Schematic diagram of fins with trapezoidal profile: (a) longitudinal, (b) annular, and (c) spine.
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Comparisons between present and previous results for the longitudinal fin with a trapezoidal profile
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The effect of dehumidification on the fin performance of a longitudinal fin with trapezoidal profile and comparison with triangular profile: (a) fin efficiency; and (b) fin effectiveness.
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Comparison of fin performance of different types of wet fins with a trapezoidal profile: (a) fin efficiency; and (b) fin effectiveness.
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Design curves for optimum longitudinal wet fins of straight taper profile for Ta=305 K, Tb=285 K: (a) maximum heat transfer rate; and (b) optimum aspect ratio.

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