The influences of structural parameters (shape, dimensions, structure pitch) on the capillary-transport properties of the wick was studied, and the choice of microstructured wick elements for hyperfine evaporative-condensing devices is substantiated. It has been established that steam chambers with conical microstructures are characterized by minimal mass at a high efficiency in removing thermal loads from hard-to-reach heat-stressed elements. Laboratory technologies for producing microprofiled structures by chemical and electrochemical milling have been developed. Experimental samples of microprofiled structures with a porosity of 65% and a permeability of 91 darcy were obtained. Based on the developed wick (70 × 70 × 0.05 mm3), a steam chamber of size 75 × 75 × 0.81 mm3 (working fluid — water, casing — copper) with a thermal resistance of 0.13 K/W and isothermicity of 1.4°C was created.
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 96, No. 7, pp. 1901–1908, November–December, 2023.
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Voitik, O.L., Delendik, K.I., Kolyago, N.V. et al. Microprofiled Surfaces for Hyperfine Evaporative-Condensing Units. J Eng Phys Thermophy 96, 1867–1874 (2023). https://doi.org/10.1007/s10891-023-02857-z
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DOI: https://doi.org/10.1007/s10891-023-02857-z