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Experimental and Numerical Analysis of the Impeller Backside Cavity in a Centrifugal Compressor for CAES

Author

Listed:
  • Zhihua Lin

    (Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Zhitao Zuo

    (Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
    University of Chinese Academy of Sciences, Beijing 100049, China
    National Energy Large Scale Physical Energy Storage Technologies R&D Center of Bijie High-Tech Industrial Development Zone, Bijie 551712, China)

  • Wei Li

    (Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Jianting Sun

    (Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China)

  • Xin Zhou

    (Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China)

  • Haisheng Chen

    (Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
    University of Chinese Academy of Sciences, Beijing 100049, China
    National Energy Large Scale Physical Energy Storage Technologies R&D Center of Bijie High-Tech Industrial Development Zone, Bijie 551712, China
    Nanjing Institute of Future Energy System, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Nanjing 211135, China)

  • Xuezhi Zhou

    (National Energy Large Scale Physical Energy Storage Technologies R&D Center of Bijie High-Tech Industrial Development Zone, Bijie 551712, China)

Abstract

Relying on a closed test rig of a high-power intercooling centrifugal compressor for compressed air energy storage (CAES), this study measured the static pressure and static temperature at different radii on the static wall of the impeller backside cavity (IBC) under variable rotating speeds. Simultaneously, the coupled computations of all mainstream domains with IBC or not were used for comparative analysis of the aerodynamic performances of the compressor and the internal flow field in IBC. The results show that IBC has a significant impact on coupling characteristics including pressure ratio, efficiency, torque, shaft power, and axial thrust of the centrifugal compressor. The gradients of radial static pressure and static temperature in IBC both increase with the decrease of mainstream flow or the increase of rotating speed, whose distributions are different under variable rotating speeds due to the change of the aerodynamic parameters of mainstream.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:2:p:420-:d:719411
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    Citations

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    Cited by:

    1. 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.
    2. Enas Taha Sayed & Abdul Ghani Olabi & Abdul Hai Alami & Ali Radwan & Ayman Mdallal & Ahmed Rezk & Mohammad Ali Abdelkareem, 2023. "Renewable Energy and Energy Storage Systems," Energies, MDPI, vol. 16(3), pages 1-26, February.
    3. Hailong Yang & Yonghong Xu & Hongguang Zhang & Jian Zhang & Fubin Yang & Yan Wang & Yuting Wu, 2023. "Experimental Investigation on the Performance of Compressors for Small-Scale Compressed Air Energy Storage in Parallel Mode," Sustainability, MDPI, vol. 15(17), pages 1-29, September.

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