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On the definition of the power coefficient of tidal current turbines and efficiency of tidal current turbine farms

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  • Li, Ye

Abstract

During the last decade, the development of tidal current industries has experienced a rapid growth. Many devices are being prototyped. For various purposes, investors, industries, government and academics are looking to identify the best device in terms of of cost of energy and performance. However, it is difficult to compare the cost of energy of new devices directly because of uncertainties in the operational and capital costs. It may however be possible to compare the power output of different devices by standardizing the definition of power coefficients. In this paper, we derive a formula to quantify the power coefficient of different devices. Specifically, this formula covers ducted devices, and it suggests that the duct shape should be considered. We also propose a procedure to quantify the efficiency of a tidal current turbine farm by using the power output of the farm where no hydrodynamic interaction exists between turbines, which normalizes a given farm's power output. We also show that the maximum efficiency of a farm can be obtained when the hydrodynamic interaction exists.

Suggested Citation

  • Li, Ye, 2014. "On the definition of the power coefficient of tidal current turbines and efficiency of tidal current turbine farms," Renewable Energy, Elsevier, vol. 68(C), pages 868-875.
    • Handle: RePEc:eee:renene:v:68:y:2014:i:c:p:868-875
    DOI: 10.1016/j.renene.2013.09.020
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    References listed on IDEAS

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    1. Myers, L. & Bahaj, A.S., 2006. "Power output performance characteristics of a horizontal axis marine current turbine," Renewable Energy, Elsevier, vol. 31(2), pages 197-208.
    2. Li, Ye & Çalişal, Sander M., 2010. "Numerical analysis of the characteristics of vertical axis tidal current turbines," Renewable Energy, Elsevier, vol. 35(2), pages 435-442.
    3. Ponta, Fernando & Shankar Dutt, Gautam, 2000. "An improved vertical-axis water-current turbine incorporating a channelling device," Renewable Energy, Elsevier, vol. 20(2), pages 223-241.
    4. Li, Ye & Calisal, Sander M., 2010. "Three-dimensional effects and arm effects on modeling a vertical axis tidal current turbine," Renewable Energy, Elsevier, vol. 35(10), pages 2325-2334.
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    Citations

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    Cited by:

    1. Jeffcoate, Penny & Whittaker, Trevor & Boake, Cuan & Elsaesser, Bjoern, 2016. "Field tests of multiple 1/10 scale tidal turbines in steady flows," Renewable Energy, Elsevier, vol. 87(P1), pages 240-252.
    2. Vazquez, A. & Iglesias, G., 2015. "LCOE (levelised cost of energy) mapping: A new geospatial tool for tidal stream energy," Energy, Elsevier, vol. 91(C), pages 192-201.
    3. Arun Raj Shanmugam & Ki Sun Park & Chang Hyun Sohn, 2023. "Comparison of the Power Extraction Performance of an Oscillating Hydrofoil Turbine with Different Deflector Designs," Energies, MDPI, vol. 16(8), pages 1-29, April.
    4. Mestres, Marc & Griñó, Maria & Sierra, Joan Pau & Mösso, César, 2016. "Analysis of the optimal deployment location for tidal energy converters in the mesotidal Ria de Vigo (NW Spain)," Energy, Elsevier, vol. 115(P1), pages 1179-1187.
    5. Vazquez, A. & Iglesias, G., 2016. "Grid parity in tidal stream energy projects: An assessment of financial, technological and economic LCOE input parameters," Technological Forecasting and Social Change, Elsevier, vol. 104(C), pages 89-101.

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