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Efficiency improvement of a tidal current turbine utilizing a larger area of channel

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  • Kim, Ki-Pyoung
  • Ahmed, M. Rafiuddin
  • Lee, Young-Ho

Abstract

There is a growing interest in utilizing tidal currents for power generation which has led to extensive research on this source of renewable energy. The amount of energy that can be extracted from tidal currents has been a topic of considerable interest to researchers for many years; still, there is no consensus on the extent to which this resource can be exploited. A turbine generates no power if it presents no resistance to the flow or if it presents so much resistance that there is no flow through it. At the same time, the estimation of exploitable resource should take into consideration the environmental, economic and social constraints. In view of these, the design of efficient turbines driven by bi-directional tidal currents has been a challenge to researchers for some time. There appears to be a general agreement among researchers that a number of turbines spread over the width of the channel can extract more energy compared to an isolated turbine. The present work is aimed at quantifying the improvement in the performance of a given type of turbine by utilizing a larger area of the channel. Numerical experiments were performed using the commercial CFD code ANSYS-CFX to study the performance of a bi-directional cross-flow turbine by simulating two cases of i) a single turbine and ii) a number of equally spaced turbines. It was found that the Coefficient of Power can be increased significantly by employing a larger area of the channel.

Suggested Citation

  • Kim, Ki-Pyoung & Ahmed, M. Rafiuddin & Lee, Young-Ho, 2012. "Efficiency improvement of a tidal current turbine utilizing a larger area of channel," Renewable Energy, Elsevier, vol. 48(C), pages 557-564.
    • Handle: RePEc:eee:renene:v:48:y:2012:i:c:p:557-564
    DOI: 10.1016/j.renene.2012.06.018
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    References listed on IDEAS

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    1. Charlier, Roger H., 2003. "A "sleeper" awakes: tidal current power," Renewable and Sustainable Energy Reviews, Elsevier, vol. 7(6), pages 515-529, December.
    2. Bahaj, A.S. & Molland, A.F. & Chaplin, J.R. & Batten, W.M.J., 2007. "Power and thrust measurements of marine current turbines under various hydrodynamic flow conditions in a cavitation tunnel and a towing tank," Renewable Energy, Elsevier, vol. 32(3), pages 407-426.
    3. Sun, X. & Chick, J.P. & Bryden, I.G., 2008. "Laboratory-scale simulation of energy extraction from tidal currents," Renewable Energy, Elsevier, vol. 33(6), pages 1267-1274.
    4. Bryden, Ian G. & Couch, Scott J., 2007. "How much energy can be extracted from moving water with a free surface: A question of importance in the field of tidal current energy?," Renewable Energy, Elsevier, vol. 32(11), pages 1961-1966.
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    Cited by:

    1. Qian, Peng & Feng, Bo & Liu, Hao & Tian, Xiange & Si, Yulin & Zhang, Dahai, 2019. "Review on configuration and control methods of tidal current turbines," Renewable and Sustainable Energy Reviews, Elsevier, vol. 108(C), pages 125-139.
    2. Elbatran, A.H. & Yaakob, O.B. & Ahmed, Yasser M. & Jalal, M. Rajali, 2015. "Novel approach of bidirectional diffuser-augmented channels system for enhancing hydrokinetic power generation in channels," Renewable Energy, Elsevier, vol. 83(C), pages 809-819.
    3. Elbatran, A.H. & Yaakob, O.B. & Ahmed, Yasser M. & Shabara, H.M., 2015. "Operation, performance and economic analysis of low head micro-hydropower turbines for rural and remote areas: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 43(C), pages 40-50.
    4. A. H. Samitha Weerakoon & Young-Ho Lee & Mohsen Assadi, 2023. "Wave Energy Convertor for Bilateral Offshore Wave Flows: A Computational Fluid Dynamics (CFD) Study," Sustainability, MDPI, vol. 15(9), pages 1-40, April.
    5. Zhou, Daqing & Deng, Zhiqun (Daniel), 2017. "Ultra-low-head hydroelectric technology: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 78(C), pages 23-30.
    6. Du, Jiyun & Shen, Zhicheng & Yang, Hongxing, 2018. "Effects of different block designs on the performance of inline cross-flow turbines in urban water mains," Applied Energy, Elsevier, vol. 228(C), pages 97-107.
    7. Weerakoon, A.H. Samitha & Kim, Byung-Ha & Cho, Young-Jin & Prasad, Deepak Divashkar & Ahmed, M. Rafiuddin & Lee, Young-Ho, 2021. "Design optimization of a novel vertical augmentation channel housing a cross-flow turbine and performance evaluation as a wave energy converter," Renewable Energy, Elsevier, vol. 180(C), pages 1300-1314.

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