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The Efficiency Comparison of Hydro Turbines for Micro Power Plant from Free Vortex

Author

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  • Piyawat Sritram

    (Department of Mechanical Engineering, Faculty of Engineering, KhonKaen University, KhonKaen 40002, Thailand)

  • Ratchaphon Suntivarakorn

    (Department of Mechanical Engineering, Faculty of Engineering, KhonKaen University, KhonKaen 40002, Thailand)

Abstract

In this research paper, the relationship between a crossflow turbine and propeller turbine size changes and the pond size in a free vortex power generation system was investigated. This relationship can be written in the form of a new mathematical equation using the principles of the response surface methodology (RSM) method. This study aimed to compare the efficiency of a crossflow turbine and propeller turbine to enhance a micro power plant from free vortex. The pond size in a micro power plant from free vortex was 1 m in diameter and 0.5 m in height with a 0.2 m outlet drain at the bottom. All turbines were tested at different water flowrates of 0.2, 0.3, 0.4, 0.5, and 0.6 m 3 /s to identify the rpm, water head, voltage, and electric current to access the waterpower, power output, and overall efficiency. At a 0.02 m 3 /s water flowrate, the crossflow turbine had greater overall efficiency than the propeller turbine, reaching 9.09% efficiency. From the comparison of the results of the two turbines used in the 0.5 m high cylinder-shaped generator pond, the turbine type, turbine size (height and diameter), number of blades, and water flowrate are key factors that affect the overall efficiency. The crossflow turbine can achieve greater efficiency than the propeller turbine in this generator system.

Suggested Citation

  • Piyawat Sritram & Ratchaphon Suntivarakorn, 2021. "The Efficiency Comparison of Hydro Turbines for Micro Power Plant from Free Vortex," Energies, MDPI, vol. 14(23), pages 1-13, November.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:23:p:7961-:d:690450
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    References listed on IDEAS

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    1. Ram Adhikari & David Wood, 2018. "The Design of High Efficiency Crossflow Hydro Turbines: A Review and Extension," Energies, MDPI, vol. 11(2), pages 1-18, January.
    2. Yakun Zhang & Wenzhe Tang & Colin F. Duffield & Lihai Zhang & Felix Kin Peng Hui, 2021. "Environment Management of Hydropower Development: A Case Study," Energies, MDPI, vol. 14(7), pages 1-12, April.
    3. Ullah, Rizwan & Cheema, Taqi Ahmad & Saleem, Abdul Samad & Ahmad, Sarvat Mushtaq & Chattha, Javed Ahmad & Park, Cheol Woo, 2020. "Preliminary experimental study on multi-stage gravitational water vortex turbine in a conical basin," Renewable Energy, Elsevier, vol. 145(C), pages 2516-2529.
    4. Dhakal, Sagar & Timilsina, Ashesh B. & Dhakal, Rabin & Fuyal, Dinesh & Bajracharya, Tri R. & Pandit, Hari P. & Amatya, Nagendra & Nakarmi, Amrit M., 2015. "Comparison of cylindrical and conical basins with optimum position of runner: Gravitational water vortex power plant," Renewable and Sustainable Energy Reviews, Elsevier, vol. 48(C), pages 662-669.
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    Cited by:

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