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Study on the Influence of Radial Inlet Chamber Splitter Blades on the Oblique Flow Compressor Performance

Author

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  • Jixiang Chen

    (Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100191, China
    School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China)

  • Zhitao Zuo

    (Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100191, China
    School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China
    National Energy Large Scale Physical Energy Storage Technologies R&D Center (Bijie), Bijie 551712, China)

  • Xin Zhou

    (Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100191, China)

  • Jianting Sun

    (Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100191, China)

  • Jingxin Li

    (Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100191, China)

  • Wenbin Guo

    (Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100191, China)

  • Haisheng Chen

    (Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100191, China
    School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China
    National Energy Large Scale Physical Energy Storage Technologies R&D Center (Bijie), Bijie 551712, China)

Abstract

The oblique flow compressor is one of the important components in the compressed air energy storage (CAES) system. The structural shape of the radial inlet chamber (RIC) directly affects the compressor performance, and a reasonable RIC design should achieve the smallest total pressure loss and outlet distortion as much as possible to meet the structural design. To study the influence of splitter blades, 4 RICs equipped with different numbers of splitter blades are designed, and the performance of 4 RICs and the overall performance of the compressor is calculated. The results show that with the increase in the number of splitter blades, the stall margin increases from 6.3% to 13.94%. At the design point, the isentropic efficiency is highest for the RIC with 17 splitter blades, and the pressure ratio is highest for the RIC with 11 splitter blades. Compared with the direct axial intake mode, the uniformity of the relative leakage distribution and the attack angle distribution of the impeller leading edge under 4 radial intake modes are poor. However, with an increase in the number of splitter blades, the uniformity of the relative tip leakage and the attack angle distribution gradually increase. The flow loss of RIC will increase simultaneously, though the uniformity of the outlet aerodynamic parameters distribution improves, and the influence on the downstream component performance gradually weakens. There is an optimal number of splitter blades in RIC, which balances the total pressure loss and distortion coefficient.

Suggested Citation

  • Jixiang Chen & Zhitao Zuo & Xin Zhou & Jianting Sun & Jingxin Li & Wenbin Guo & Haisheng Chen, 2023. "Study on the Influence of Radial Inlet Chamber Splitter Blades on the Oblique Flow Compressor Performance," Energies, MDPI, vol. 16(11), pages 1-21, May.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:11:p:4384-:d:1158458
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    References listed on IDEAS

    as
    1. Zhihua Lin & Zhitao Zuo & Wei Li & Jianting Sun & Xin Zhou & Haisheng Chen & Xuezhi Zhou, 2022. "Experimental and Numerical Analysis of the Impeller Backside Cavity in a Centrifugal Compressor for CAES," Energies, MDPI, vol. 15(2), pages 1-18, January.
    2. Semlitsch, Bernhard & Mihăescu, Mihai, 2016. "Flow phenomena leading to surge in a centrifugal compressor," Energy, Elsevier, vol. 103(C), pages 572-587.
    3. Jianting Sun & Xin Zhou & Qi Liang & Zhitao Zuo & Haisheng Chen, 2019. "The Effect of Wet Compression on a Centrifugal Compressor for a Compressed Air Energy Storage System," Energies, MDPI, vol. 12(5), pages 1-24, March.
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