Heat transfer with the boiling of binary liquid mixtures

An approximate physical model of heat transfer with the boiling of liquid mixtures is presented. According to this model, when liquid mixtures are boiled, the main reason for the deterioration of heat transfer, as compared to the pure components of the mixture, is the local increase in the concentration of the highly-boiling component in the wall layer. On the basis of this model, a correction is introduced for the boiling heat transfer coefficient, with the latter calculated using the thermophysical properties of the mixture in the bulk of the liquid. A comparison of calculated and experimental data showed that this approach is justified.