Analysis of the thermodynamic efficiency of using compressed gas to organize fluid movement in a positive displacement piston hybrid energy machine with two suction valves

This paper studies the energy consumption for gas compression in a positive displacement piston machine with two suction valves. A methodology for calculating energy costs was developed and a numerical experiment was carried out to determine the diameter of the supply channel and its location in the working chamber of the machine. As a result of a numerical experiment, it was established: an increase in the diameter of the connecting channel leads to a decrease in the energy spent on gas compression, which is used to organize the intensification of the movement of the coolant when it is lowered, which leads to an increase in the operating efficiency of the proposed design, in which low-pressure compressed gas is supplied immediately in large quantities quantity during the compression process; the diameter of the gas supply channel must be in the range from (6–10)?10–4 m, and the channel must begin at a distance of (60–70)% of the full piston stroke from top dead center. The conducted research will be used in the design of a new piston high-efficiency hybrid energy machine with two suction valves.
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References

[1] Shcherba V.E., Bolshtyanskii A.P., Kaigorodov S.Yu. et al. Benefits of integrating displacement pumps and compressors. Russ. Engin. Res., 2016, vol. 36, no. 3, pp. 174–178, doi: https://doi.org/10.3103/S1068798X1603014X

[2] Shcherba V.E., Shalai V.V., Tegzhanov A.S. et al. Generalized comparative analysis of crosshead-free and crosshead schemes of piston hybrid power machines. J. Mech. Sci. Technol., 2020, vol. 34, no. 12, pp. 5093–5107, doi: http://doi.org/10.1007/s12206-020-1113-4

[3] Shcherba V.E., Bolshtyanskiy A.P., Kuzeeva D.A. et al. Sposob raboty mashiny obemnogo deystviya i ustroystvo dlya ego osushchestvleniya [Method of operating volumetric action machine and device therefor]. Patent RU 2578776. Appl. 03.04.2015, publ. 27.03.2016. (In Russ.).

[4] Shcherba V.E., Ovsyannikov A.Yu., Bolshtyanskiy A.P. et al. Porshnevoy dvukhtsilindrovyy kompressor s avtonomnym zhidkostnym okhlazhdeniem [Two-cylinder reciprocating compressor with autonomous liquid cooling]. Patent RU 2755967. Appl. 20.11.2020, publ. 23.09.2021. (In Russ.).

[5] Tegzhanov A.S., Shcherba V.E., Bolshtyanskiy A.P. Porshnevoy kompressor s avtonomnym zhidkostnym rubashechnym okhlazhdeniem [Reciprocating compressor with self-contained liquid jacket cooling]. Patent RU 2784267. Appl. 29.07.2022, publ. 23.11.2022. (In Russ.).

[6] Shcherba V.E., Kuzeeva D.A., Nosov E.Yu. Nonuniform delivery rates from multicylinder pumps. Vestnik mashinostroeniya, 2016, no. 4, pp. 3–8. (In Russ.). (Eng. version: Russ. Engin. Res., 2016, vol. 36, no. 4, pp. 266–269, doi: https://doi.org/10.3103/S1068798X1604016X)

[7] Shcherba V.E., Khait A., Pavlyuchenko E.A. et al. Development and research of a promising pumpless liquid cooling system for reciprocating compressors. Energies, 2023, vol. 16, no. 3, art. 1191, doi: https://doi.org/10.3390/en16031191

[8] Shcherba V.E., Tegzhanov A.-Kh.S. Mathematical model of working processes of a positive displacement piston hybrid power machine with a gas cap and two suction valves. Chem. Petrol. Eng., 2022, vol. 58, no. 5–6, pp. 388–397, doi: https://doi.org/10.1007/s10556-022-01104-1

[9] Ekimov G.I., Tegzhanov A.S., Shcherba V.E. [Analysis of the main disadvantages of a piston hybrid power plant with two suction valves and ways to overcome them]. Gidravlicheskie i teplotekhnicheskie sistemy i agregaty. XXVII Mezhd. nauch.-tekh. konf. [Hydraulic and thermal systems and units. XXVII Int. Sci.-Tech. Conf.]. Moscow, Mir nauki Publ., 2023, p. 79–85. (In Russ.).

[10] Plastinin P.I. Porshnevye kompressory. T. 1. Teoriya i raschet [Piston compressors. Vol. 1. Theory and calculation]. Moscow. Kolos, 2006. 456 p. (In Russ.).

[11] Fotin B.S., ed. Porshnevye kompressory [Piston compressors]. Leningrad, Mashinostroenie Publ., 1987. 372 p. (In Russ.).

[12] Shcherba V.E. Rabochie protsessy kompressorov obemnogo deystviya [Operating processes of positive displacement compressors]. Moscow, Nauka Publ., 2008. 318 p. (In Russ.).

[13] Altshul A.D., Kiselev P.G. Gidravlika i aerodinamika [Hydraulics and aerodynamics]. Moscow, Stroyizdat Publ., 1975. 327 p. (In Russ.).