An analysis of the processes involved in heating of the liquid present above a piston in the working cavity of the compressor section of a positive-displacement hybrid power machine is given. On the basis of the general fundamental laws of conservation of energy and mass a thermodynamic calculation of the parameters of a two-phase, two-component open thermodynamic system with deformation and thermal interaction of phases is carried out. The influence of deformation work, external heat exchange, and direct-contact heat transfer on the variation of the temperature of the liquid is determined.
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Thus, direct-contact heat exchange is the decisive factor in heating of pumped fluid in the compression process in the compressor section of a hybrid piston power machine, while external heat exchange is a less significant factor and deformation work is a quite insignificant factor.
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Translated from Khimicheskoe i Neftegazovoe Mashinostroenie, Vol. 55, No. 7, pp. 25−31, July, 2019.
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Shcherba, V.E., Shalai, V.V., Zanin, A.V. et al. Analysis of Liquid-Heating Process in the Course of Compression in the Working Cavity of the Compressor Section of a Hybrid Piston Power Machine. Chem Petrol Eng 55, 562–577 (2019). https://doi.org/10.1007/s10556-019-00663-0
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DOI: https://doi.org/10.1007/s10556-019-00663-0