BOILING OF A LOW-TEMPERATURE DISPERSED PHASE IN LIQUID EMULSIONS
Rubrics: 2. CHEMICAL TECHNOLOGY
Authors:
1.
Kazan State University of Architecture and Engineering
2.
Naberezhno-Chelninskiy institut Kazanskogo federal'nogo universiteta
3.
KNITU
Type:
Article
Pages:
from 46
to 51
Status:
Published
Received:
24.12.2025
Accepted:
25.12.2025
Published:
25.12.2025
Language:
Russian
Keywords:
HEAT TRANSFER, BOILING CRISIS, LIQUID EMULSION, LOW-BOILING DISPERSED PHASE, BUBBLE BOILING
Abstract (English):
Liquid emulsions and gas-liquid mixtures are actively used in the production sector as part of technological processes that require 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. To analyze the boiling of emulsions of liquids with a low-boiling dispersed phase, the theory of advanced boiling of a homogeneous liquid at a solid wall, developed by Labuntsov, was used. The calculated dependence obtained for the emulsion was compared with experimental data published in scientific sources. 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.
Liquid emulsions and gas-liquid mixtures are actively used in the production sector as part of technological processes that require 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. To analyze the boiling of emulsions of liquids with a low-boiling dispersed phase, the theory of advanced boiling of a homogeneous liquid at a solid wall, developed by Labuntsov, was used. The calculated dependence obtained for the emulsion was compared with experimental data published in scientific sources. 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.
Keywords:
HEAT TRANSFER, BOILING CRISIS, LIQUID EMULSION, LOW-BOILING DISPERSED PHASE, BUBBLE BOILING
HEAT TRANSFER, BOILING CRISIS, LIQUID EMULSION, LOW-BOILING DISPERSED PHASE, BUBBLE BOILING
