| Issue |
E3S Web Conf.
Volume 320, 2021
Energy Systems Environmental Impacts (ESEI 2021)
|
|
|---|---|---|
| Article Number | 04001 | |
| Number of page(s) | 12 | |
| Section | Power Engineering | |
| DOI | https://doi.org/10.1051/e3sconf/202132004001 | |
| Published online | 09 November 2021 | |
Analysis of Liquid Piston Compressibility in the Two-Stage Hybrid Positive-Displacement Machine
Omsk State Technical University, 11, Mira ave., 644050, Omsk, Russia
* Corresponding author: scherba_v_e@list.ru
The effect of liquid compressibility in the two-stage piston hybrid positive-displacement machine with a liquid piston was considered. Based on the volume conservation equation, we developed a calculus methodology for the liquid compressibility during gas compression in the second stage of the compressor section. A numerical experiment made it possible to establish that some parameters have the greatest effect on the relative decrease in the height and velocity of the liquid layer. These parameters are the degree of pressure ratio; pipeline length; the polytropic index of the compression; the number of crankshaft revolutions. We found that the relative decrease in the liquid layer height is within 1 %, and the relative decrease in the liquid piston velocity is within 5 %. The paper analyses the liquid piston compressibility influence on the thermodynamic efficiency of the compression process and compressor performance.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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