CONDENSATE LIQUID DISTRIBUTION OF CONVECTIVE CONDENSATION HEAT TRANSFER FOR MIXTURE GAS FLOWING OVER A HORIZONTAL FINNED TUB

摘要

The modified film model combining with the Nusselt抯 condensation theory are used for the study of the convective condensation heat transfer on a horizontal tube with moist mixed gas flows horizontally at given speed. A theoretical model considering gas boundary layer separation was set up. The liquid film flows and the heat transfers on the tube were presented. The effects of flowing direction on condensation heat transfer were discussed. Results predict that the condensate film is so thin that the liquid phase heat resistance can be ignored.