A unified performance conversion method for similar compressors working with different gases based on polytropic analysis and deep-learning improvement

Xu, Pengcheng; Zou, Zhengping; Yao, Lichao

doi:10.1016/j.enconman.2021.114747

Cited by 9 publications

(3 citation statements)

References 37 publications

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“…kη, Z 0 , n s l is the similitude parameter for the isentropic efficiency. The author's previous work (Xu et al, 2021) has theoretically derivated the similitude parameter for efficiency. It it proved that the polytropic efficiency η p is much more suitable for performance conversion between similar compressors working with different gases.…”

Section: Similitude Parametersmentioning

confidence: 99%

“…Since it is much more popular to use isentropic efficiency η s rather than polytropic efficiency η p in engineering, conversion between these two kinds of efficiency is necessary. Detailed conversion method has been presented in the author's previous work (Xu et al, 2021). kΔH =(R g T 01 ), Z 0 , n s l is the similitude parameter for the enthalpy rise, it can be deduced that…”

Section: Similitude Parametersmentioning

confidence: 99%

“…However, this correction was obtained by trials. Xu (Xu et al, 2021) theoretically deduced a unified performance conversion method for turbomachines working with all kind of fluids, which could be the basis of this work.…”

Section: Introductionmentioning

confidence: 98%

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A study of real-gas effect on SCO2 compressor performance using similitude method

Zou

2022

J. Glob. Power Propuls. Soc.

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The drastic property changes of supercritical CO2 (SCO2) make the performance of SCO2 compressors different from that of conventional compressors. This study deals with the real-gas effect on the SCO2 compressor performance by theoretical analysis and numerical validation. A set of similitude parameters are firstly deduced by dimensional analysis. Then keeping these parameters unchanged, the performance variation of a SCO2 compressor is analyzed when the inlet flow condition changes in a certain temperature and pressure range. Results show that the proposed similitude method could accurately reflect the variation trend of SCO2 compressor performance under different inflow conditions. The real-gas effect enables the compressor to obtain higher pressure ratio with lower temperature rise. It is recommended that the inlet temperature of SCO2 compressor should be as close as possible to the critical temperature and the pressure should be about 150 kPa higher than the corresponding pseudo-critical pressure at the same temperature.

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Section: Similitude Parametersmentioning

confidence: 99%

Section: Similitude Parametersmentioning

confidence: 99%