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Multi-Parameter Optimization Design of the Impeller for a Hydrogen Liquefaction Turbine Expander

Author

Listed:
  • Xiaohui Zhang

    (Key Laboratory of Liquefied Natural Gas and Low Carbon Technology, China National Offshore Oil Corporation, Beijing 100028, China)

  • Pei Liu

    (College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, China)

  • Hao Cheng

    (Key Laboratory of Liquefied Natural Gas and Low Carbon Technology, China National Offshore Oil Corporation, Beijing 100028, China)

  • Zehui Zhao

    (College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, China)

  • Fangqiu Li

    (Key Laboratory of Liquefied Natural Gas and Low Carbon Technology, China National Offshore Oil Corporation, Beijing 100028, China)

  • Jiayi Yang

    (Key Laboratory of Liquefied Natural Gas and Low Carbon Technology, China National Offshore Oil Corporation, Beijing 100028, China)

  • Ke Wang

    (College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, China)

Abstract

This study employs a combined approach of theoretical calculation and numerical simulation to systematically optimize the impeller of a turbine expander, the core component of a 10-ton/day hydrogen liquefaction system. First, based on thermodynamic analysis and one-dimensional calculations, a three-factor four-level orthogonal experiment optimizes the parameters of reaction degree, radius ratio, and blade height ratio. Building upon this foundation, the influence of two-dimensional meridional profiles on impeller efficiency is investigated to establish design criteria. Subsequently, the effects of three-dimensional parameters including tip clearance, blade count, and blade thickness on performance are analyzed. Finally, the impact of rotational speed and flow rate on efficiency is explored, identifying high-efficiency operational ranges. Through multi-parameter collaborative optimization, an impeller configuration achieving low outlet temperature (53.67 K) and high efficiency (about 93.6%) is obtained, providing critical references for designing high-efficiency turbine expanders in hydrogen liquefaction systems.

Suggested Citation

  • Xiaohui Zhang & Pei Liu & Hao Cheng & Zehui Zhao & Fangqiu Li & Jiayi Yang & Ke Wang, 2025. "Multi-Parameter Optimization Design of the Impeller for a Hydrogen Liquefaction Turbine Expander," Energies, MDPI, vol. 18(19), pages 1-17, September.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:19:p:5142-:d:1759652
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    References listed on IDEAS

    as
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    2. Fiaschi, Daniele & Manfrida, Giampaolo & Maraschiello, Francesco, 2012. "Thermo-fluid dynamics preliminary design of turbo-expanders for ORC cycles," Applied Energy, Elsevier, vol. 97(C), pages 601-608.
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