Mechanism Research Of Convective Condensation Heat Transfer For A Gas Mixture Flowing Over A Horizontal Tube

摘要

The modified film model combined with Nussell's condensation theory are used for the study of conveclive condensation heat transfer on a horizontal tube with moist mixed horizontal gas flows at a given speed. A theoretical model considering gas boundary layer separation was set up. The liquid fielm flows and the heat transfer on the tube are presented. The effects of the flow direction on condensation heat transfer are discussed. The results predict that the condensate film is so thin that the liquid phase heat resistance can be ignored.