Different methods of profiling the working cavity of the second stage of a volumetric hybrid piston power machine are considered. Profiling of the working chamber in order to achieve a constant velocity of the liquid piston and attain the maximal magnitude of the heat-exchange surface, as well as profiling of the surface of a working chamber consisting of a cone and cylinder are performed. Computational formulas in analytic form are obtained in order to create a profiled surface that satisfies the first two conditions. For the third condition criteria for estimating the efficiency relative to the maximal magnitude of the heat-exchange surface and relative to the deviation of the velocity of the liquid piston from some constant velocity of the liquid in the working chamber are developed. As a result of a numerical experiment forms of the working chamber that satisfy the first two conditions are established and it is proved that a conical surface is best for a working chamber consisting of a cone and cylinder.
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Translated from Khimicheskoe i Neftegazovoe Mashinostroenie, Vol. 56, No. 2, pp. 26−31, February, 2020.
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Shcherba, V.E., Shalai, V.V., Pustovoi, N.V. et al. On Profiling of the Working Cavity of the Second Stage in a Hybrid Piston Volumetric Power Machine. Chem Petrol Eng 56, 125–136 (2020). https://doi.org/10.1007/s10556-020-00749-0
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DOI: https://doi.org/10.1007/s10556-020-00749-0