Abstract
An analysis of forced convection film condensation on a flat plate is performed for the case in which the free stream vapor flow is superheated. The solution method is applicable to free stream flows that are either binary mixtures of a condensable vapor and a noncondensable gas or pure condensable vapors. Specific numerical results are obtained for the condensation of steam with air as noncondensable. The effect of superheating on condensation heat transfer is found to be significant only in the range of relaively small differences between the free stream saturation temperature and the wall temperature. Furthermore, the influence of superheating is markedly augmented by the presence of noncondensable gases. Comparison of the present results for forced convection condensation with those for gravity-flow condensation indicates that the latter is much more sensitive to superheating.
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