Abstract <p>Liquid emulsions and gas-liquid mixtures are actively used in industrial applications requiring efficient heat and mass transfer. During metalworking, cutting tools are often cooled using special liquid emulsions. During electrochemical treatment of metals, heat is released, and gas bubbles and sludge are removed from the treatment area using an electrolyte stream. Modeling physical processes helps to better understand their essence, especially if the model and the actual process have similar characteristics. Simple models describe fundamental physical phenomena and are expressed through dimensionless similarity criteria based on theoretical assumptions and empirical data. The Labuntsov theory of advanced boiling of a homoge neous liquid at a solid wall was used to analyze the boiling of emulsions of liquids with a low-boiling dispersed phase. The calculated dependence obtained for the emulsion was compared with experimental data reported. The results of the study showed that heat transfer in the emulsion depends on the concentration of the dispersed phase and occurs in two modes with different mechanisms of bubble boiling. The data obtained are in good agreement with the results of measurements of the heat flux density during boiling of water-oil emulsions. Numerical methods and specialized software for computational fluid dynamics are used to solve such problems, which makes it possible to optimize the operation of various devices and systems.</p>