DEVELOPMENT OF A TECHNOLOGY FOR CREATING STRUCTURED CAPILLARY-POROUS COATINGS BY MEANS OF 3D PRINTING FOR INTENSIFICATION OF HEAT TRANSFER DURING BOILING
V. P. Bessmeltsev1, A. N. Pavlenko2, V. I. Zhukov3
1Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
3Novosibirsk State Technical University, Novosibirsk, Russia
Keywords: капиллярно-пористое покрытие, микротекстурированная поверхность, аддитивные технологии, SLМ/SLS, интенсификация теплообмена при кипении, capillary-porous coating, microtextured surface, additive technologies, SLМ/SLS, intensification of heat transfer during boiling
Abstract
Application of the method of layer-by-layer selective laser sintering of a metal powder for depositing capillary-porous coatings with a prescribed porosity onto heat-releasing surfaces is considered. Implementation of this method in experimental investigations of the boiling process on modified surfaces allows broad-range variations of the main parameters of microstructured capillary-porous coatings and other three-dimensional structures: material, porosity, amplitude (height), thickness of the residual layer and wavelength of capillary-porous coatings, and size and shape of three-dimensional ordered microtextures. It is demonstrated that the use of this technology can increase the coefficient of heat release in the case of boiling on the surface with a capillary-porous coating by several times as compared to the uncoated surface.
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