Abstract

The performance of convection -condensation heat transfer of mixture gas with water vapor in a vertical tube was studied theoretically and experimentally. The convection heat transfer betwee n bulk flow and interface and the condensation heat transfer on the liquid film were considered. The effects of the condensation of a small amount of water vapor (8% -30% fraction) on convection heat transfer in a vertical tube was discussed in this paper. The flows (Re=3000 – 13000) in vertical tube were investigated experimentally. Comparisons of the theoretical solutions with some experimental results are in good agreement.

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