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Influence of Critical Wall Roughness on the Performance of Double-Channel Sewage Pump

Author

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  • Xiaoke He

    (School of Electric Power, North China University of Water Resources and Electric Power, Zhengzhou 450045, China)

  • Yingchong Zhang

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

  • Chuan Wang

    (College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China)

  • Congcong Zhang

    (College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China)

  • Li Cheng

    (College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China)

  • Kun Chen

    (Ningbo Jushen Pumps Industry Co., Ltd., Ningbo 315100, China)

  • Bo Hu

    (Deputy Energy & Power Engineering, Tsinghua University, Beijing 100084, China)

Abstract

The numerical method on a double-channel sewage pump was studied, while the corresponding experimental result was also provided. On this basis, the influence of wall roughness on the pump performance was deeply studied. The results showed that there was a critical value of wall roughness. When the wall roughness was less than the critical value, it had a great influence on the pump performance, including the head, efficiency, and shaft power. As the wall roughness increased, the head and efficiency were continuously reduced, while the shaft power was continuously increased. Otherwise, the opposite was true. The effect of wall roughness on the head and hydraulic loss power was much smaller than that on the efficiency and disk friction loss power, respectively. With the increase of wall roughness, mechanical efficiency and hydraulic efficiency reduced constantly, leading to the decrement of the total efficiency. With the increase of flow rate, the effect of wall roughness on the head and efficiency gradually increased, while the influence on the leakage continuously reduced. The influence of the flow-through component roughness on the pump performance was interactive.

Suggested Citation

  • Xiaoke He & Yingchong Zhang & Chuan Wang & Congcong Zhang & Li Cheng & Kun Chen & Bo Hu, 2020. "Influence of Critical Wall Roughness on the Performance of Double-Channel Sewage Pump," Energies, MDPI, vol. 13(2), pages 1-20, January.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:2:p:464-:d:310068
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    References listed on IDEAS

    as
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    Cited by:

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    3. Kan Kan & Qingying Zhang & Yuan Zheng & Hui Xu & Zhe Xu & Jianwei Zhai & Alexis Muhirwa, 2022. "Investigation into Influence of Wall Roughness on the Hydraulic Characteristics of an Axial Flow Pump as Turbine," Sustainability, MDPI, vol. 14(14), pages 1-20, July.
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    8. Shuihua Zheng & Chaojie Yang & Chaoshou Yan & Min Chai & Zenan Sun, 2022. "Study on Fiber Clogging Mechanism in Sewage Pump Based on CFD–DEM Simulation," Energies, MDPI, vol. 15(5), pages 1-19, February.
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