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A comparative calculation of the wind turbines capacities on the basis of the L–σ criterion

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  • Menet, Jean-Luc
  • Valdès, Laurent-Charles
  • Ménart, Bruno

Abstract

Usually, wind sites are equipped with fast-running Horizontal Axis Wind Turbines of the airscrew type, which has a high efficiency. In this article, the argument is put forward that the choice of a wind turbine must not be based only on high efficiency. We propose a comparative criterion adapted to the comparison of a horizontal axis wind turbine with a vertical axis wind turbine: the L–σ criterion. This criterion consists in comparing wind turbines which intercept the same front width of wind, by allocating them a same reference value of the maximal mechanical stress on the blades or the paddles. On the basis of this criterion, a quantitative comparison points to a clear advantage of the Savonius rotors, because of their lower angular velocity, and provides some elements for the improvement of their rotor.

Suggested Citation

  • Menet, Jean-Luc & Valdès, Laurent-Charles & Ménart, Bruno, 2001. "A comparative calculation of the wind turbines capacities on the basis of the L–σ criterion," Renewable Energy, Elsevier, vol. 22(4), pages 491-506.
    • Handle: RePEc:eee:renene:v:22:y:2001:i:4:p:491-506
    DOI: 10.1016/S0960-1481(00)00114-2
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    Citations

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    Cited by:

    1. Valdès, L.-C & Darque, J, 2003. "Design of wind-driven generator made up of dynamos assembling," Renewable Energy, Elsevier, vol. 28(3), pages 345-362.
    2. Afungchui, David & Kamoun, Baddreddinne & Helali, Ali & Ben Djemaa, Abdellatif, 2010. "The unsteady pressure field and the aerodynamic performances of a Savonius rotor based on the discrete vortex method," Renewable Energy, Elsevier, vol. 35(1), pages 307-313.
    3. Mohamed, M.H. & Janiga, G. & Pap, E. & Thévenin, D., 2010. "Optimization of Savonius turbines using an obstacle shielding the returning blade," Renewable Energy, Elsevier, vol. 35(11), pages 2618-2626.
    4. Valdès, L-C. & Raniriharinosy, K., 2001. "Low technical wind pumping of high efficiency," Renewable Energy, Elsevier, vol. 24(2), pages 275-301.
    5. Menet, J.-L., 2004. "A double-step Savonius rotor for local production of electricity: a design study," Renewable Energy, Elsevier, vol. 29(11), pages 1843-1862.

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