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Air concentrating nozzles: a promising option for wind turbines

Author

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  • S. Shikha
  • T.S. Bhatti
  • D.P. Kothari

Abstract

Although the use of wind turbines has become necessary in many parts of the world, the actual developments in wind turbines do not concern countries where the average wind speeds are low. The paper introduces a new vertical axis wind rotor using a convergent nozzle for low wind speed areas. This paper brings a detailed theoretical and practical study of air concentrating nozzle and the optimum nozzle dimensions have been analysed in detail. A research programme involving wind tunnel tests of five different nozzle models has also been conducted. The length and the outlet area of the nozzle were changed periodically to see their effect on the increase of wind speed. The variation of the output speed with different values of input wind speed, different input areas of nozzle and different lengths of nozzle placed at different distances from the wind tunnel have been outlined in the paper. Results of additional study of the new rotor's performance characteristics using concentrating nozzles have also been outlined.

Suggested Citation

  • S. Shikha & T.S. Bhatti & D.P. Kothari, 2005. "Air concentrating nozzles: a promising option for wind turbines," International Journal of Energy Technology and Policy, Inderscience Enterprises Ltd, vol. 3(4), pages 394-412.
    • Handle: RePEc:ids:ijetpo:v:3:y:2005:i:4:p:394-412
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    Citations

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    Cited by:

    1. Refaie, Abdelaziz G. & Abdel Hameed, H.S. & Nawar, Mohamed A.A. & Attai, Youssef A. & Mohamed, Mohamed H., 2021. "Qualitative and quantitative assessments of an Archimedes Spiral Wind Turbine performance augmented by A concentrator," Energy, Elsevier, vol. 231(C).
    2. Ngwarai Shambira & Golden Makaka & Patrick Mukumba, 2024. "Velocity Augmentation Model for an Empty Concentrator-Diffuser-Augmented Wind Turbine and Optimisation of Geometrical Parameters Using Surface Response Methodology," Sustainability, MDPI, vol. 16(4), pages 1-30, February.
    3. Refaie, Abdelaziz G. & Hameed, H.S. Abdel & Nawar, Mohamed A.A. & Attai, Youssef A. & Mohamed, Mohamed H., 2022. "Comparative investigation of the aerodynamic performance for several Shrouded Archimedes Spiral Wind Turbines," Energy, Elsevier, vol. 239(PC).
    4. Shaikh Zishan & Altaf Hossain Molla & Haroon Rashid & Kok Hoe Wong & Ahmad Fazlizan & Molla Shahadat Hossain Lipu & Mohd Tariq & Omar Mutab Alsalami & Mahidur R. Sarker, 2023. "Comprehensive Analysis of Kinetic Energy Recovery Systems for Efficient Energy Harnessing from Unnaturally Generated Wind Sources," Sustainability, MDPI, vol. 15(21), pages 1-18, October.
    5. N. Aravindhan & M. P. Natarajan & S. Ponnuvel & P.K. Devan, 2023. "Recent developments and issues of small-scale wind turbines in urban residential buildings- A review," Energy & Environment, , vol. 34(4), pages 1142-1169, June.
    6. Shonhiwa, Chipo & Makaka, Golden, 2016. "Concentrator Augmented Wind Turbines: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 59(C), pages 1415-1418.

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