Analysis of Results of Experimental Study of Working Processes of a Positive-Displacement Piston Hybrid Power Machine Having Two Suction Valves with Change of Compressed Gas Discharge Pressure

Investigations of a prototype positive-displacement piston hybrid power machine having two suction valves showed that the cooling-fluid flow rate is maximum at a compressed gas discharge pressure of 0.5 MPa. Elevation of discharge pressure leads to a decline in machine performance on both suction an...

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Bibliographic Details
Published inChemical and petroleum engineering Vol. 59; no. 5-6; pp. 393 - 402
Main Authors Shcherba, V. E., Tegzhanov, A. S., Dorofeev, E. A., Ekimov, G. I.
Format Journal Article
LanguageEnglish
Published New York Springer US 01.09.2023
Springer
Springer Nature B.V
Subjects
Chemistry
Chemistry and Materials Science
Compressed gas
Compressors
Cylinders
Fluid flow
Gas discharges
Geotechnical Engineering & Applied Earth Sciences
Industrial Chemistry/Chemical Engineering
Industrial Pollution Prevention
Mineral Resources
Nonuniformity
Pipeline Fittings
Pressure effects
Pumps
Suction
Temperature distribution
Valves
delivery coefficient
crankshaft speed
reciprocating compressor
piston hybrid power machine
indicator efficiency
coolant
temperature of cylinder-piston group parts
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Summary:Investigations of a prototype positive-displacement piston hybrid power machine having two suction valves showed that the cooling-fluid flow rate is maximum at a compressed gas discharge pressure of 0.5 MPa. Elevation of discharge pressure leads to a decline in machine performance on both suction and discharge and a decrease in delivery coefficient. The components of the delivery coefficient and the physical mechanisms of their change were disclosed. Analysis of the effect of discharge pressure on the temperature of the cylinder-piston group parts revealed that there is a significant nonuniformity of temperature distribution along the cylinder generatrix, which reaches 26 K. This nonuniformity increases with increase of crankshaft speed. The maximum value of the indicator isothermal efficiency of the studied machine is observed at 0.5 MPa discharge pressure.
ISSN:0009-2355
1573-8329
DOI:10.1007/s10556-024-01255-3