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Assessment of Primary Energy Conversion of a Closed-Circuit OWC Wave Energy Converter

Author

Listed:
  • Pierre Benreguig

    (MaREI Centre, Beaufort building, University College Cork, Haubowline Road, P43C573 Ringaskiddy, Co. Cork, Dublin 4, Ireland)

  • Vikram Pakrashi

    (MaREI Centre, Beaufort building, University College Cork, Haubowline Road, P43C573 Ringaskiddy, Co. Cork, Dublin 4, Ireland
    Dynamical Systems and Risk Laboratory, School of Mechanical and Materials Engineering, University College Dublin, Dublin 4, Ireland)

  • Jimmy Murphy

    (MaREI Centre, Beaufort building, University College Cork, Haubowline Road, P43C573 Ringaskiddy, Co. Cork, Dublin 4, Ireland)

Abstract

Tupperwave is a wave energy device based on the Oscillating-Water-Column (OWC) concept. Unlike a conventional OWC, which creates a bidirectional air flow across the self-rectifying turbine, the Tupperwave device uses rectifying valves to create a smooth unidirectional air flow, which is harnessed by a unidirectional turbine. This paper deals with the development and validation of time-domain numerical models from wave to pneumatic power for the Tupperwave device and the conventional OWC device using the same floating spar buoy structure. The numerical models are built using coupled hydrodynamic and thermodynamic equations. The isentropic assumption is used to describe the thermodynamic processes. A tank testing campaign of the two devices at 1/24th scale is described, and the results are used to validate the numerical models. The capacity of the innovative Tupperwave OWC concept to convert wave energy into useful pneumatic energy to the turbine is assessed and compared to the corresponding conventional OWC.

Suggested Citation

  • Pierre Benreguig & Vikram Pakrashi & Jimmy Murphy, 2019. "Assessment of Primary Energy Conversion of a Closed-Circuit OWC Wave Energy Converter," Energies, MDPI, vol. 12(10), pages 1-24, May.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:10:p:1962-:d:233426
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    References listed on IDEAS

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    1. López, I. & Pereiras, B. & Castro, F. & Iglesias, G., 2014. "Optimisation of turbine-induced damping for an OWC wave energy converter using a RANS–VOF numerical model," Applied Energy, Elsevier, vol. 127(C), pages 105-114.
    2. Falcão, António F.O. & Henriques, João C.C., 2016. "Oscillating-water-column wave energy converters and air turbines: A review," Renewable Energy, Elsevier, vol. 85(C), pages 1391-1424.
    3. Markel Penalba & John V. Ringwood, 2016. "A Review of Wave-to-Wire Models for Wave Energy Converters," Energies, MDPI, vol. 9(7), pages 1-45, June.
    4. Falcão, António F.O. & Henriques, João C.C. & Cândido, José J., 2012. "Dynamics and optimization of the OWC spar buoy wave energy converter," Renewable Energy, Elsevier, vol. 48(C), pages 369-381.
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    Cited by:

    1. Portillo, J.C.C. & Collins, K.M. & Gomes, R.P.F. & Henriques, J.C.C. & Gato, L.M.C. & Howey, B.D. & Hann, M.R. & Greaves, D.M. & Falcão, A.F.O., 2020. "Wave energy converter physical model design and testing: The case of floating oscillating-water-columns," Applied Energy, Elsevier, vol. 278(C).
    2. Tomás Cabral & Daniel Clemente & Paulo Rosa-Santos & Francisco Taveira-Pinto & Tiago Morais & Filipe Belga & Henrique Cestaro, 2020. "Performance Assessment of a Hybrid Wave Energy Converter Integrated into a Harbor Breakwater," Energies, MDPI, vol. 13(1), pages 1-22, January.
    3. Pierre Benreguig & James Kelly & Vikram Pakrashi & Jimmy Murphy, 2019. "Wave-to-Wire Model Development and Validation for Two OWC Type Wave Energy Converters," Energies, MDPI, vol. 12(20), pages 1-28, October.
    4. O’Kelly-Lynch, Patrick & Long, Cian & McAuliffe, Fiona Devoy & Murphy, Jimmy & Pakrashi, Vikram, 2020. "Structural design implications of combining a point absorber with a wind turbine monopile for the east and west coast of Ireland," Renewable and Sustainable Energy Reviews, Elsevier, vol. 119(C).

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