Correlation for Marangoni Condensation Heat Transfer of Water–Ethanol Mixture Vapors

The existing investigations of heat transfer characteristic of Marangoni condensation were mainly on experimental methods. Due to the limitations of experimental studies and the diversity of experimental results, the correlation with dimensionless numbers for Marangoni condensation was attempted. The heat transfer characteristic of Marangoni condensation for water–ethanol mixture vapors was reviewed, as well as the condensation modes. Considering the characteristics and the direct influencing factors of Marangoni condensation, several dimensionless numbers were introduced to represent the heat transfer results and essential influencing factors. Based on the experimental data, a correlation was proposed to predict the heat transfer characteristic of Marangoni condensation of water–ethanol mixture vapors. The deviation between the prediction values and present experimental results was between –25% and 30%.