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Research on the influence mechanism of internal flow characteristics on energy conversion in radial energy recovery turbines under multiple conditions

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  • Qi, Bing
  • Bai, Xiaobang
  • Li, Yibin
  • Wang, Xiaohui
  • Zhang, Xiaoze
  • Zhang, Desheng

Abstract

The development of Energy Recovery Turbine (ERT) is of great significance for energy saving and emission reduction. The mutual influence mechanism between the flow characteristics and energy conversion of ERT has not yet been mastered. A radial ERT was selected as the research object and a mathematical model based on entropy generation theory was established to evaluate the energy loss of the ERT. The internal flow characteristics and energy loss mechanism of an ERT were studied. The results show that the entropy generation power of the impeller accounts for 17.4 %. The turbulent entropy generation power of the impeller accounts for 76.5 % of the total entropy generation power. The energy loss at the volute tongue is maximized due to the presence of two attached vortexes with opposite rotation directions. The area with significant energy loss in the impeller gradually shifts from hub and pressure surface to the suction surface as the flow increases. The performance degradation under overload conditions is relatively slow, as the flow impact on the pressure surface has a smaller impact on the blade's ability to perform work. Therefore, the hydraulic design should be carried out after appropriately reducing the rated flow rate when designing a radial turbine.

Suggested Citation

  • Qi, Bing & Bai, Xiaobang & Li, Yibin & Wang, Xiaohui & Zhang, Xiaoze & Zhang, Desheng, 2024. "Research on the influence mechanism of internal flow characteristics on energy conversion in radial energy recovery turbines under multiple conditions," Energy, Elsevier, vol. 296(C).
    • Handle: RePEc:eee:energy:v:296:y:2024:i:c:s0360544224009642
    DOI: 10.1016/j.energy.2024.131191
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    References listed on IDEAS

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    1. Francesconi, Marco & Dori, Edoardo & Antonelli, Marco, 2019. "Analysis of Balje diagrams for a Wankel expander prototype," Applied Energy, Elsevier, vol. 238(C), pages 775-785.
    2. Qi, Bing & Zhang, Desheng & Geng, Linlin & Zhao, Ruijie & van Esch, Bart P.M., 2022. "Numerical and experimental investigations on inflow loss in the energy recovery turbines with back-curved and front-curved impeller based on the entropy generation theory," Energy, Elsevier, vol. 239(PE).
    3. Lin, Tong & Li, Xiaojun & Zhu, Zuchao & Xie, Jing & Li, Yi & Yang, Hui, 2021. "Application of enstrophy dissipation to analyze energy loss in a centrifugal pump as turbine," Renewable Energy, Elsevier, vol. 163(C), pages 41-55.
    4. Binama, Maxime & Su, Wen-Tao & Li, Xiao-Bin & Li, Feng-Chen & Wei, Xian-Zhu & An, Shi, 2017. "Investigation on pump as turbine (PAT) technical aspects for micro hydropower schemes: A state-of-the-art review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 79(C), pages 148-179.
    5. Wang, Tao & Wang, Chuan & Kong, Fanyu & Gou, Qiuqin & Yang, Sunsheng, 2017. "Theoretical, experimental, and numerical study of special impeller used in turbine mode of centrifugal pump as turbine," Energy, Elsevier, vol. 130(C), pages 473-485.
    6. Ghorani, Mohammad Mahdi & Sotoude Haghighi, Mohammad Hadi & Maleki, Ali & Riasi, Alireza, 2020. "A numerical study on mechanisms of energy dissipation in a pump as turbine (PAT) using entropy generation theory," Renewable Energy, Elsevier, vol. 162(C), pages 1036-1053.
    7. Yang, Sun-Sheng & Derakhshan, Shahram & Kong, Fan-Yu, 2012. "Theoretical, numerical and experimental prediction of pump as turbine performance," Renewable Energy, Elsevier, vol. 48(C), pages 507-513.
    8. Du, Jiyun & Yang, Hongxing & Shen, Zhicheng & Chen, Jian, 2017. "Micro hydro power generation from water supply system in high rise buildings using pump as turbines," Energy, Elsevier, vol. 137(C), pages 431-440.
    9. Morabito, Alessandro & Vagnoni, Elena & Di Matteo, Mariano & Hendrick, Patrick, 2021. "Numerical investigation on the volute cutwater for pumps running in turbine mode," Renewable Energy, Elsevier, vol. 175(C), pages 807-824.
    10. Barbarelli, S. & Amelio, M. & Florio, G., 2016. "Predictive model estimating the performances of centrifugal pumps used as turbines," Energy, Elsevier, vol. 107(C), pages 103-121.
    11. Wang, Tao & Kong, Fanyu & Xia, Bin & Bai, Yuxing & Wang, Chuan, 2017. "The method for determining blade inlet angle of special impeller using in turbine mode of centrifugal pump as turbine," Renewable Energy, Elsevier, vol. 109(C), pages 518-528.
    12. Lima, Gustavo Meirelles & Luvizotto, Edevar & Brentan, Bruno M., 2017. "Selection and location of Pumps as Turbines substituting pressure reducing valves," Renewable Energy, Elsevier, vol. 109(C), pages 392-405.
    13. Jain, Sanjay V. & Patel, Rajesh N., 2014. "Investigations on pump running in turbine mode: A review of the state-of-the-art," Renewable and Sustainable Energy Reviews, Elsevier, vol. 30(C), pages 841-868.
    14. Binama, Maxime & Su, Wen-Tao & Cai, Wei-Hua & Li, Xiao-Bin & Muhirwa, Alexis & Li, Biao & Bisengimana, Emmanuel, 2019. "Blade trailing edge position influencing pump as turbine (PAT) pressure field under part-load conditions," Renewable Energy, Elsevier, vol. 136(C), pages 33-47.
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