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Note on a real gas model for OWC performance

Author

Listed:
  • Medina-López, E.
  • Moñino Ferrando, A.
  • Clavero Gilabert, M.
  • del Pino, C.
  • Losada Rodríguez, M.

Abstract

Oscillating water column (OWC) are devices for wave energy extraction equipped with turbines for energy conversion. The purpose of the present work is to study the thermodynamic of a real gas flow through the turbine and its differences with respect to the ideal gas hypothesis, with the final goal to be applied to OWC systems. The effect of moisture in the air chamber of the OWC entails variations on the atmospheric conditions near the turbine, modifying its performance and efficiency. In this work we study the influence of humid air in the performance of the turbine. Experimental work is carried out and a real gas model is asserted, in order to take a first approach to quantify the extent of influence of the air–water vapour mixture in the turbine performance. The application of a real gas model and the experimental study confirmed the deviations of the turbine performance from the expected values depending on flow rate, moisture and temperature.

Suggested Citation

  • Medina-López, E. & Moñino Ferrando, A. & Clavero Gilabert, M. & del Pino, C. & Losada Rodríguez, M., 2016. "Note on a real gas model for OWC performance," Renewable Energy, Elsevier, vol. 85(C), pages 588-597.
    • Handle: RePEc:eee:renene:v:85:y:2016:i:c:p:588-597
    DOI: 10.1016/j.renene.2015.07.017
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    References listed on IDEAS

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    1. López, I. & Castro, A. & Iglesias, G., 2015. "Hydrodynamic performance of an oscillating water column wave energy converter by means of particle imaging velocimetry," Energy, Elsevier, vol. 83(C), pages 89-103.
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    Cited by:

    1. Moñino, A. & Quirós, C. & Mengíbar, F. & Medina-Lopez, E. & Clavero, M., 2020. "Thermodynamics of the OWC chamber: Experimental turbine performance under stationary flow," Renewable Energy, Elsevier, vol. 155(C), pages 317-329.
    2. Falcão, António F.O. & Henriques, João C.C., 2019. "The spring-like air compressibility effect in oscillating-water-column wave energy converters: Review and analyses," Renewable and Sustainable Energy Reviews, Elsevier, vol. 112(C), pages 483-498.
    3. Medina-López, E. & Moñino, A. & Bergillos, R.J. & Clavero, M. & Ortega-Sánchez, M., 2019. "Oscillating water column performance under the influence of storm development," Energy, Elsevier, vol. 166(C), pages 765-774.
    4. Sheng, Wanan, 2019. "Power performance of BBDB OWC wave energy converters," Renewable Energy, Elsevier, vol. 132(C), pages 709-722.
    5. Medina-López, E. & Moñino, A. & Borthwick, A.G.L. & Clavero, M., 2017. "Thermodynamics of an OWC containing real gas," Energy, Elsevier, vol. 135(C), pages 709-717.
    6. Molina, A. & Jiménez-Portaz, M. & Clavero, M. & Moñino, A., 2022. "The effect of turbine characteristics on the thermodynamics and compression process of a simple OWC device," Renewable Energy, Elsevier, vol. 190(C), pages 836-847.
    7. Zhou, Yu & Ning, Dezhi & Liang, Dongfang & Cai, Shuqun, 2021. "Nonlinear hydrodynamic analysis of an offshore oscillating water column wave energy converter," Renewable and Sustainable Energy Reviews, Elsevier, vol. 145(C).

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    Keywords

    OWC; Real gas; Moisture;
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