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Complex pilot studies of heathydrodynamic processes of the boiling coolants in mini-(micro) channels

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This article provides overview of scientific works on heat hydrodynamic characteristics during the boiling of refrigerants in mini-(micro) channels. The article shows also the advantages of the mini cannels heat exchanges from the standpoint of energy efficiency, reliability, weight and size characteristics. The article describes methods for carrying out thermophysical experiments in mini (micro) channels with different hydraulic diameters and refrigerants, such as R134a, R410A, water-air mixtures and water. In the article the schemas of the experimental installations with mini channels, also with micro channels to study the boiling regimes and the heat transfer coefficients are presented. The expediency of continuing the study of heat transfer and hydrodynamic in the mini channels is shown, basing on complex approach, including studies of boiling regimes, true vapor content, local heat transfer, and pressure drops. The schema of the experimental stand is presented.

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