Correlations for Laminar Mixed Convection on Vertical, Inclined and Horizontal Flat Plates with Uniform Surface Heat Flux
It is shown that in any heat transfer application with the constant wall temperature boundary condition, the initial temperature difference between the fluid and the wall is an important design criterion and should be set at the optimum value. There is an optimum ratio of the heat transfer to pumping power which should be used. Simply maximizing this ratio is not often a good solution, since in that case the entropy generated may be far from the minimum possible and a large amount of the available energy may thus be irretrievably lost. An optimum fluid velocity corresponding to the minimum irreversibility is recommended for the design of such a heat exchanger.
B. F. Armaly et al., "Correlations for Laminar Mixed Convection on Vertical, Inclined and Horizontal Flat Plates with Uniform Surface Heat Flux," International Journal of Heat and Mass Transfer, vol. 30, no. 2, pp. 405-408, Elsevier, Jan 1987.
The definitive version is available at http://dx.doi.org/10.1016/0017-9310(87)90129-3
Mechanical and Aerospace Engineering
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