Exergy assessment and sustainability of a simple off-shore oscillating water column device

A. Molina-Salas, C. Quirós, P. Gigant, F. Huertas-Fernández, M. Clavero and A. Moñino

Energy, 2023, vol. 264, issue C

Abstract: This paper present a research on the performance efficiency and sustainability of an Oscillating Water Column (OWC) simple off-shore device, accounting for the influence of governing thermodynamic variables (moisture, temperature, pressure) in the compression/expansion polytropic process. The work proposes a simple off-shore OWC experimental set up as the basis of the study. The analysis takes into consideration both gas subsystems inside and outside the OWC, to achieve a better understanding of the conservative nature of entropy system variable, the net exchange balance, the effects on efficiency and exergy destruction, and the interpretation of the OWC as a thermodynamic engine. Results show that, within the context of the set up, moderate wave climate conditions contribute to a better efficiency of the device in terms of output power, providing with a low impact on exergy destruction and high sustainability in terms of renewability index.

Keywords: Wave energy; Oscillating water column; Thermodynamics; Renewability; Exergy; Renewability index (search for similar items in EconPapers)
Date: 2023
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:264:y:2023:i:c:s0360544222030286

DOI: 10.1016/j.energy.2022.126142

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