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An Analysis of the Characteristics of Internal Flow Losses of Seawater Circulation Pumps in Nuclear Power Plants Based on the Entropy Production Theory

Author

Listed:
  • Yifan Zhi

    (China Nuclear Power Engineering Co., Ltd., Beijing 100840, China)

  • Qian Huang

    (China Nuclear Power Engineering Co., Ltd., Beijing 100840, China)

  • Haonan Su

    (National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, China)

  • Huairui Li

    (National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, China)

  • Huazheng Chen

    (National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, China)

  • Qidi Ke

    (National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, China)

  • Qiang Fu

    (National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, China)

Abstract

The seawater circulation pump represents the pump product with the largest flow rate within nuclear power plants. Its energy consumption accounts for a substantial portion of the energy consumed by nuclear power plants. To investigate the internal flow characteristics of the seawater circulation pump and optimize the performance while reducing energy consumption, taking the seawater circulation pump as the research object, the entropy production of each flow passage component of the pump under different flow conditions are analyzed by employing numerical simulation based on the entropy production theory. Additionally, the entropy production mechanisms of the impeller and volute are specifically analyzed. The results demonstrate that under different flow conditions, the impeller and volute are the main flow components contributing to entropy production losses for the entire pump. The leading and trailing edges of the blade and the shroud are the main locations where entropy production occurs in the impeller. Excessive attack angle and circulation are the main factors leading to entropy production. The throat area of the volute is the main entropy production area of the volute, and the secondary flow and vortex caused by flow separation are the main causes of entropy production.

Suggested Citation

  • Yifan Zhi & Qian Huang & Haonan Su & Huairui Li & Huazheng Chen & Qidi Ke & Qiang Fu, 2025. "An Analysis of the Characteristics of Internal Flow Losses of Seawater Circulation Pumps in Nuclear Power Plants Based on the Entropy Production Theory," Energies, MDPI, vol. 18(8), pages 1-16, April.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:8:p:1909-:d:1631089
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    References listed on IDEAS

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