Heat Transfer in Boiling of Binary Mixtures under Free-Convection Conditions

A study has been made of the heat transfer in boiling of binary mixtures of refrigerant–refrigerant-type homogeneous liquids completely soluble in each other under free-convection conditions with allowance for the effects of diffusion and evaporation of the highly volatile component from a mixture. These effects are responsible for the complex dependence of the heat transfer on the concentration of the mixture at a constant heat flux. A criterial dependence satisfactorily describing the results of experimental investigations has been proposed.