The combined effects of wall longitudinal heat conduction and inlet fluid flow maldistribution in crossflow plate-fin heat exchangers |
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| Authors: | Ch Ranganayakulu K N Seetharamu |
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| Institution: | (1) Aeronautical Development Agency, P.B. No. 1718, Vimanapura post, Bangalore – 560 017, India, IN;(2) School of Mechanical Engineering, University of Southern Malaysia (KCP) 31750, Tronoh, Malaysia, MY |
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| Abstract: | An analysis of a crossflow plate-fin compact heat exchanger, accounting for the combined effect of two-dimensional longitudinal
heat conduction through the exchanger wall and nonuniform inlet fluid flow distribution on both hot and cold fluid sides is
carried out using a finite element method. Using the fluid flow maldistribution models, the exchanger effectiveness and its
deterioration due to the combined effects of longitudinal heat conduction and flow nonuniformity are calculated for various
design and operating conditions of the exchanger. It was found that the performance deteriorations are quite significant in
some typical applications due to the combined effects of wall longitudinal heat conduction and inlet fluid flow nonuniformity
on crossflow plate-fin heat exchanger.
Received on 20 May 1999 |
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