An analytical method based on Frobenius power series expansion has been developed for the performance prediction of fully wet fins. Fins of different geometries, namely, longitudinal, annular and spine having both trapezoidal and triangular profiles have been considered. Unlike dry fins, the efficiency and effectiveness of wet fins depend on the fin base temperature and psychrometric condition of the ambient air. A generalized criterion has been derived for the optimization of wet fins having the above geometries. A method for constructing design curves for the optimum fins has also been discussed.
Issue Section:Technical Notes
Keywords:heat transfer, mass transfer, temperature distribution, optimisation, Analytical, Dehumidification, Finned Surfaces, Heat Exchangers, Optimization
Topics:Fins, Heat transfer, Mass transfer, Optimization, Heat, Temperature
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.
T. H., and
Mass Transfer (Absorption) Coefficients,”
Ind. Eng. Chem.,
Fin Efficiency With Combined Heat and Mass Transfer,”
A. H., and
Efficiency of Extended Surfaces With Simultaneous Heat and Mass Transfer,”
89, Part 1A, pp.
J. E. R.,
C. G. W.,
Dehumidification of Air on a Vertical Rectangular Fin: A Numerical Study,”
Proc. Inst. Mech. Eng., Part C: Mech. Eng. Sci.,
Comparison of Rectangular and Triangular Fins When Condensation Occurs,”
Analytical Study of the Effect of Dehumidification of Air on the Performance and Optimization of Straight Tapered Fins,”
Int. Commun. Heat Mass Transfer,
M. A., and
Effect of Dehumidification of Air on the Performance of Eccentric Circular Fin,”
Proc. Inst. Mech. Eng.,
The Optimum Shape for Convecting Rectangular Fins When Condensation Occurs,”
Performance Analysis and Optimization of Straight Taper Fins With Variable Heat Transfer Coefficient,”
Int. J. Heat Mass Transfer,
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.
On the Optimum Thermal Design of Individual Longitudinal Fins With Rectangular Profile,”
Heat Transfer Engineering,
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