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An improved radial impulse turbine for OWC

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  • Pereiras, Bruno
  • Castro, Francisco
  • Marjani, Abdelatif el
  • Rodríguez, Miguel A.

Abstract

Traditionally, wells turbines have been widely used in OWC plants. However, an alternative has been studied over recent years: a self-rectifying turbine known as an impulse turbine. We are interested in the radial version of the impulse turbine, which was initially proposed by M. McCormick. Previous research was carried out using CFD (FLUENT®), which aimed to improve knowledge of the local flow behavior and the prediction of the performance for this kind of turbine. This previous work was developed with a geometry taken from the literature, but now our goal is to develop a new geometry design with a better performance. To achieve this, we have redesigned the blade and vane profiles and improved the interaction between them by means of a new relation between their setting angles. Under sinusoidal flow conditions the new design improves the turbine efficiency by up to 5% more than the geometry proposed by Professor Setoguchi, in 2002. In this paper, the design criteria we have used is described, and the flow behavior and the performance of this new design are compared with the previous one.

Suggested Citation

  • Pereiras, Bruno & Castro, Francisco & Marjani, Abdelatif el & Rodríguez, Miguel A., 2011. "An improved radial impulse turbine for OWC," Renewable Energy, Elsevier, vol. 36(5), pages 1477-1484.
    • Handle: RePEc:eee:renene:v:36:y:2011:i:5:p:1477-1484
    DOI: 10.1016/j.renene.2010.10.013
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    References listed on IDEAS

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    1. Maeda, H & Santhakumar, S & Setoguchi, T & Takao, M & Kinoue, Y & Kaneko, K, 1999. "Performance of an impulse turbine with fixed guide vanesfn2fn2Patent pending. for wave power conversion," Renewable Energy, Elsevier, vol. 17(4), pages 533-547.
    2. Setoguchi, T. & Santhakumar, S. & Takao, M. & Kim, T.H. & Kaneko, K., 2003. "A modified Wells turbine for wave energy conversion," Renewable Energy, Elsevier, vol. 28(1), pages 79-91.
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    1. Rodríguez, Laudino & Pereiras, Bruno & Fernández-Oro, Jesús & Castro, Francisco, 2019. "Optimization and experimental tests of a centrifugal turbine for an OWC device equipped with a twin turbines configuration," Energy, Elsevier, vol. 171(C), pages 710-720.
    2. Falcão, A.F.O. & Gato, L.M.C. & Nunes, E.P.A.S., 2013. "A novel radial self-rectifying air turbine for use in wave energy converters," Renewable Energy, Elsevier, vol. 50(C), pages 289-298.
    3. Falcão, António F.O. & Henriques, João C.C., 2016. "Oscillating-water-column wave energy converters and air turbines: A review," Renewable Energy, Elsevier, vol. 85(C), pages 1391-1424.
    4. Elatife, Khalid & El Marjani, Abdellatif, 2019. "Efficiency improvement of a self-rectifying radial impulse turbine for wave energy conversion," Energy, Elsevier, vol. 189(C).
    5. Thomas Kelly & Thomas Dooley & John Campbell & John V. Ringwood, 2013. "Comparison of the Experimental and Numerical Results of Modelling a 32-Oscillating Water Column (OWC), V-Shaped Floating Wave Energy Converter," Energies, MDPI, vol. 6(8), pages 1-33, August.
    6. Ansarifard, Nazanin & Kianejad, S.S. & Fleming, Alan & Henderson, Alan & Chai, Shuhong, 2020. "Design optimization of a purely radial turbine for operation in the inhalation mode of an oscillating water column," Renewable Energy, Elsevier, vol. 152(C), pages 540-556.
    7. Ansarifard, Nazanin & Kianejad, S.S. & Fleming, Alan & Chai, Shuhong, 2019. "A radial inflow air turbine design for a vented oscillating water column," Energy, Elsevier, vol. 166(C), pages 380-391.
    8. Nazanin Ansarifard & Alan Fleming & Alan Henderson & S.S. Kianejad & Shuhong Chai, 2019. "Design Optimisation of a Unidirectional Centrifugal Radial-Air-Turbine for Application in OWC Wave Energy Converters," Energies, MDPI, vol. 12(14), pages 1-22, July.
    9. Gomes, R.P.F. & Henriques, J.C.C. & Gato, L.M.C. & Falcão, A.F.O., 2012. "Multi-point aerodynamic optimization of the rotor blade sections of an axial-flow impulse air turbine for wave energy conversion," Energy, Elsevier, vol. 45(1), pages 570-580.
    10. Carrelhas, A.A.D. & Gato, L.M.C. & Henriques, J.C.C., 2023. "Peak shaving control in OWC wave energy converters: From concept to implementation in the Mutriku wave power plant," Renewable and Sustainable Energy Reviews, Elsevier, vol. 180(C).
    11. Pereiras, Bruno & López, Iván & Castro, Francisco & Iglesias, Gregorio, 2015. "Non-dimensional analysis for matching an impulse turbine to an OWC (oscillating water column) with an optimum energy transfer," Energy, Elsevier, vol. 87(C), pages 481-489.
    12. Carrelhas, A.A.D. & Gato, L.M.C. & Morais, F.J.F., 2024. "Aerodynamic performance and noise emission of different geometries of Wells turbines under design and off-design conditions," Renewable Energy, Elsevier, vol. 220(C).
    13. Gato, L.M.C. & Maduro, A.R. & Carrelhas, A.A.D. & Henriques, J.C.C. & Ferreira, D.N., 2021. "Performance improvement of the biradial self-rectifying impulse air-turbine for wave energy conversion by multi-row guide vanes: Design and experimental results," Energy, Elsevier, vol. 216(C).
    14. Liu, Hua & Wang, Weijun & Wen, Yadong & Mao, Longbo & Wang, Wenqiang & Mi, Hongju, 2019. "A novel axial flow self-rectifying turbine for use in wave energy converters," Energy, Elsevier, vol. 189(C).
    15. Rodríguez, Laudino & Pereiras, Bruno & García-Diaz, Manuel & Fernández-Oro, Jesús & Castro, Francisco, 2020. "Flow pattern analysis of an outflow radial turbine for twin-turbines-OWC wave energy converters," Energy, Elsevier, vol. 211(C).

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