Experimental study of single screw expander with different oil-gas separators in compressed air powered system

Ruiping Zhi, Biao Lei, Cancan Zhang, Weining Ji and Yuting Wu

Energy, 2021, vol. 235, issue C

Abstract: The compressed air-powered system is widely studied as a promising, environment-friendly, and high-efficiency technology. The influences of centrifugal and filter oil-gas separator on the performance of single screw expanders for compressed air-powered systems are experimentally investigated. Results show that the intake volume flow rate using the centrifugal oil-gas separator is lower than that of the filter oil-gas separator. Meanwhile, the temperature difference between the inlet and outlet of a single screw expander, the average output power, and the average shaft efficiency by using the centrifugal oil-gas separator is 1.88, 1.67, and 1.42 times higher than that of the filter oil-gas separator under the same working condition in this study. The maximum expansion ratio in this work is 8.5 by using the centrifugal oil-gas separator. The actual total output power, effective working time, and exergy efficiency by using the centrifugal oil-gas separator are respectively 56.67%, 4.51%, and 92.52% substantially higher than that of the filter oil-gas separator. The performance of single screw expanders in compressed air-powered systems can be improved by using the centrifugal oil-gas separator.

Keywords: Single screw expander; Compressed air-powered system; Oil-gas separator (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:235:y:2021:i:c:s0360544221016194

DOI: 10.1016/j.energy.2021.121371

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