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Upgrading conventional wind turbines

Author

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  • Bet, F
  • Grassmann, H

Abstract

When approaching a conventional wind turbine, the air flow is slowed down and widened. This effect causes a loss in the efficiency of the turbine. By creating a field of low pressure behind the turbine, this effect and the corresponding loss in efficiency can be avoided. In order to maintain this low pressure field, the air passing near, but not through the turbine needs to do work.

Suggested Citation

  • Bet, F & Grassmann, H, 2003. "Upgrading conventional wind turbines," Renewable Energy, Elsevier, vol. 28(1), pages 71-78.
    • Handle: RePEc:eee:renene:v:28:y:2003:i:1:p:71-78
    DOI: 10.1016/S0960-1481(01)00187-2
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    Citations

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    Cited by:

    1. Grassmann, H. & Bet, F. & Ceschia, M. & Ganis, M.L., 2004. "On the physics of partially static turbines," Renewable Energy, Elsevier, vol. 29(4), pages 491-499.
    2. Jun-Feng Hu & Wen-Xue Wang, 2015. "Upgrading a Shrouded Wind Turbine with a Self-Adaptive Flanged Diffuser," Energies, MDPI, vol. 8(6), pages 1-19, June.
    3. Kuang, Limin & Su, Jie & Chen, Yaoran & Han, Zhaolong & Zhou, Dai & Zhang, Kai & Zhao, Yongsheng & Bao, Yan, 2022. "Wind-capture-accelerate device for performance improvement of vertical-axis wind turbines: External diffuser system," Energy, Elsevier, vol. 239(PB).
    4. Leloudas, Stavros N. & Lygidakis, Georgios N. & Eskantar, Alexandros I. & Nikolos, Ioannis K., 2020. "A robust methodology for the design optimization of diffuser augmented wind turbine shrouds," Renewable Energy, Elsevier, vol. 150(C), pages 722-742.
    5. Mann, Harjeet S. & Singh, Pradeep K., 2020. "Energy recovery ducted turbine (ERDT) system for chimney flue gases - A CFD based analysis to study the effect of number of blade and diffuser angle," Energy, Elsevier, vol. 213(C).
    6. Niebuhr, C.M. & van Dijk, M. & Neary, V.S. & Bhagwan, J.N., 2019. "A review of hydrokinetic turbines and enhancement techniques for canal installations: Technology, applicability and potential," Renewable and Sustainable Energy Reviews, Elsevier, vol. 113(C), pages 1-1.
    7. Keramat Siavash, Nemat & Najafi, G. & Tavakkoli Hashjin, Teymour & Ghobadian, Barat & Mahmoodi, Esmail, 2020. "Mathematical modeling of a horizontal axis shrouded wind turbine," Renewable Energy, Elsevier, vol. 146(C), pages 856-866.
    8. Xu, Bin & Ma, Qiyu & Huang, Diangui, 2021. "Research on energy harvesting properties of a diffuser-augmented flapping wing," Renewable Energy, Elsevier, vol. 180(C), pages 271-280.
    9. Grassmann, H. & Bet, F. & Cabras, G. & Ceschia, M. & Cobai, D. & DelPapa, C., 2003. "A partially static turbine—first experimental results," Renewable Energy, Elsevier, vol. 28(11), pages 1779-1785.
    10. Nardecchia, Fabio & Groppi, Daniele & Astiaso Garcia, Davide & Bisegna, Fabio & de Santoli, Livio, 2021. "A new concept for a mini ducted wind turbine system," Renewable Energy, Elsevier, vol. 175(C), pages 610-624.
    11. Rahmatian, Mohammad Ali & Hashemi Tari, Pooyan & Mojaddam, Mohammad & Majidi, Sahand, 2022. "Numerical and experimental study of the ducted diffuser effect on improving the aerodynamic performance of a micro horizontal axis wind turbine," Energy, Elsevier, vol. 245(C).
    12. Gaden, David L.F. & Bibeau, Eric L., 2010. "A numerical investigation into the effect of diffusers on the performance of hydro kinetic turbines using a validated momentum source turbine model," Renewable Energy, Elsevier, vol. 35(6), pages 1152-1158.
    13. Yuji Ohya & Takashi Karasudani, 2010. "A Shrouded Wind Turbine Generating High Output Power with Wind-lens Technology," Energies, MDPI, vol. 3(4), pages 1-16, March.
    14. Siahpour, Shahin & Khakiani, Fardad N. & Fazlollahi, Vahid & Golozar, Ali & Shirazi, Farzad A., 2021. "Morphing Omni-directional Panel Mechanism: A novel active roof design for improving the performance of the wind delivery system," Energy, Elsevier, vol. 217(C).
    15. Wang, Wen-Xue & Matsubara, Terutake & Hu, Junfeng & Odahara, Satoru & Nagai, Tomoyuki & Karasutani, Takashi & Ohya, Yuji, 2015. "Experimental investigation into the influence of the flanged diffuser on the dynamic behavior of CFRP blade of a shrouded wind turbine," Renewable Energy, Elsevier, vol. 78(C), pages 386-397.
    16. Anbarsooz, M. & Amiri, M. & Rashidi, I., 2019. "A novel curtain design to enhance the aerodynamic performance of Invelox: A steady-RANS numerical simulation," Energy, Elsevier, vol. 168(C), pages 207-221.
    17. Joselin Herbert, G.M. & Iniyan, S. & Sreevalsan, E. & Rajapandian, S., 2007. "A review of wind energy technologies," Renewable and Sustainable Energy Reviews, Elsevier, vol. 11(6), pages 1117-1145, August.
    18. Saleem, Arslan & Kim, Man-Hoe, 2020. "Aerodynamic performance optimization of an airfoil-based airborne wind turbine using genetic algorithm," Energy, Elsevier, vol. 203(C).
    19. Kumar, Vedant & Saha, Sandeep, 2019. "Theoretical performance estimation of shrouded-twin-rotor wind turbines using the actuator disk theory," Renewable Energy, Elsevier, vol. 134(C), pages 961-969.
    20. Zhu, Hongzhong & Sueyoshi, Makoto & Hu, Changhong & Yoshida, Shigeo, 2019. "A study on a floating type shrouded wind turbine: Design, modeling and analysis," Renewable Energy, Elsevier, vol. 134(C), pages 1099-1113.
    21. Hu, Ssu-Yuan & Cheng, Jung-Ho, 2008. "Innovatory designs for ducted wind turbines," Renewable Energy, Elsevier, vol. 33(7), pages 1491-1498.
    22. Matsushima, Toshio & Takagi, Shinya & Muroyama, Seiichi, 2006. "Characteristics of a highly efficient propeller type small wind turbine with a diffuser," Renewable Energy, Elsevier, vol. 31(9), pages 1343-1354.

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