Abstract
This paper deals with an experimental study of free convection condensation of steam-air mixture on a vertical tube. The experiment is made using copper tube of 4mm in outer diameter. The range of concentration of air is 0.1〜0.9. Condensation rate is measured as well as overall heat transfer rate. The convection heat flux is obtained by subtracting the condensation heat flux from the heat flux at the cooling surface. The newly proposed equations in the previous paper for predicting condensation mass flux, convective heat flux at the liquid-vapor interface and heat flux at the cooling surface correlate the respective experimental results within the error of several percents.
