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Experimental investigations on the performance of a fixed-oscillating water column type wave energy converter

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  • Çelik, Anıl
  • Altunkaynak, Abdüsselam

Abstract

Oscillating water column (OWC) type wave energy converters are the most promising candidates to harvest untapped ocean wave energy. OWC front wall opening and power take-off (PTO) damping optimization are very significant for feasible energy extraction. A comprehensive experimental investigation was performed for a bottom-fixed oscillating water column to determine the influence of the underwater opening height of the chamber, power take-off damping and wave steepness on the energy converter efficiency. A broad range of opening heights and power take-off dampings was utilized in physical experiments under various wave steepness values. Water column displacements, velocities and motion behaviors were also examined. Optimal orifice ratios were determined to obtain maximum efficiency under different wave steepness values. Based on the results, the key finding of this study is, for a certain range of wave steepness, optimal damping that should be applied on the system does not only depend on the wave characteristics, but also opening height of the chamber. The motion of water column surface behavior also affects the performance of the converter considerably.

Suggested Citation

  • Çelik, Anıl & Altunkaynak, Abdüsselam, 2019. "Experimental investigations on the performance of a fixed-oscillating water column type wave energy converter," Energy, Elsevier, vol. 188(C).
    • Handle: RePEc:eee:energy:v:188:y:2019:i:c:s0360544219317669
    DOI: 10.1016/j.energy.2019.116071
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    References listed on IDEAS

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    5. Mandev, Murat Barıs & Altunkaynak, Abdüsselam, 2023. "Cylindrical frontwall entrance geometry optimization of an oscillating water column for utmost hydrodynamic performance," Energy, Elsevier, vol. 280(C).
    6. Kharkeshi, Behrad Alizadeh & Shafaghat, Rouzbeh & Jahanian, Omid & Alamian, Rezvan & Rezanejad, Kourosh, 2022. "Experimental study of an oscillating water column converter to optimize nonlinear PTO using genetic algorithm," Energy, Elsevier, vol. 260(C).
    7. Doyle, Simeon & Aggidis, George A., 2021. "Experimental investigation and performance comparison of a 1 single OWC, array and M-OWC," Renewable Energy, Elsevier, vol. 168(C), pages 365-374.
    8. Saheli, Mahdieh Arabzadeh & Lari, Kamran & Salehi, Gholamreza & Azad, Masoud Torabi, 2022. "Techno-economic assessment of a hybrid on grid PV-wave system: A case study in Caspian Sea," Renewable Energy, Elsevier, vol. 186(C), pages 596-608.
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    10. Mahmoodi, Kumars & Razminia, Abolhassan & Ghassemi, Hassan, 2021. "Optimal control of wave energy converters with non-integer order performance indices: A dynamic programming approach," Renewable Energy, Elsevier, vol. 177(C), pages 1212-1233.

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