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How much energy can be extracted from moving water with a free surface: A question of importance in the field of tidal current energy?

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  • Bryden, Ian G.
  • Couch, Scott J.

Abstract

This short technical note addresses the extraction of energy from a simplified channel in which flow is driven by a head difference between inlet and outlet. This model is used to indicate that there is a maximum rate at which energy can be artificially extracted from the flowing water and that this rate is related to the kinetic energy flux in the unexploited channel but with a multiplying factor which is related to the channel physical properties. Counter intuitively, this multiplier can exceed unity in some circumstances. The simple channel has some similarities to tidal channels but is here presented as an abstraction to allow appreciation of the relationships between energy extraction, flow speed and channel properties.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:renene:v:32:y:2007:i:11:p:1961-1966
    DOI: 10.1016/j.renene.2006.11.006
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    Cited by:

    1. Lilia Flores Mateos & Michael Hartnett, 2020. "Hydrodynamic Effects of Tidal-Stream Power Extraction for Varying Turbine Operating Conditions," Energies, MDPI, vol. 13(12), pages 1-23, June.
    2. Myers, L.E. & Bahaj, A.S., 2012. "An experimental investigation simulating flow effects in first generation marine current energy converter arrays," Renewable Energy, Elsevier, vol. 37(1), pages 28-36.
    3. 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.
    4. Funke, S.W. & Farrell, P.E. & Piggott, M.D., 2014. "Tidal turbine array optimisation using the adjoint approach," Renewable Energy, Elsevier, vol. 63(C), pages 658-673.
    5. Hachmann, Christoph & Stallard, Tim & Stansby, Peter & Lin, Binliang, 2021. "Experimentally validated study of the impact of operating strategies on power efficiency of a turbine array in a bi-directional tidal channel," Renewable Energy, Elsevier, vol. 163(C), pages 1408-1426.
    6. Rosli, R. & Norman, R. & Atlar, M., 2016. "Experimental investigations of the Hydro-Spinna turbine performance," Renewable Energy, Elsevier, vol. 99(C), pages 1227-1234.
    7. Roc, Thomas & Conley, Daniel C. & Greaves, Deborah, 2013. "Methodology for tidal turbine representation in ocean circulation model," Renewable Energy, Elsevier, vol. 51(C), pages 448-464.
    8. Pérez-Ortiz, Alberto & Borthwick, Alistair G.L. & McNaughton, James & Smith, Helen C.M. & Xiao, Qing, 2017. "Resource characterization of sites in the vicinity of an island near a landmass," Renewable Energy, Elsevier, vol. 103(C), pages 265-276.
    9. Kai-Wern Ng & Wei-Haur Lam & Khai-Ching Ng, 2013. "2002–2012: 10 Years of Research Progress in Horizontal-Axis Marine Current Turbines," Energies, MDPI, vol. 6(3), pages 1-30, March.
    10. Garrett, Chris & Cummins, Patrick, 2008. "Limits to tidal current power," Renewable Energy, Elsevier, vol. 33(11), pages 2485-2490.
    11. González-Gorbeña, Eduardo & Qassim, Raad Y. & Rosman, Paulo C.C., 2016. "Optimisation of hydrokinetic turbine array layouts via surrogate modelling," Renewable Energy, Elsevier, vol. 93(C), pages 45-57.

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    Keywords

    Channel; Energy extraction limit;

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