Exergy assessment and sustainability of a simple off-shore oscillating water column device
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Molina Salas, Ángel; Quirós, C.; Gigant, P.; Huertas-Fernández, Francisco; Clavero Gilabert, María; Moñino Ferrando, AntonioEditorial
Elsevier
Materia
Wave energy Oscillating Water Column (OWC) Thermodynamics Renewability Exergy Renewability index
Date
2022-11-22Referencia bibliográfica
A. Molina-Salas et al. Exergy assessment and sustainability of a simple off-shore oscillating water column device. Energy 264 (2023) 126142 [https://doi.org/10.1016/j.energy.2022.126142]
Sponsorship
Andalusian Regional Government, Spain, projects P18-RT-3595 and B-RNM-346-UGR18; Grant TED2021-131717B-I00 funded by MCIN/AEI/ 10.13039/501100011033; ERDF A way of making Europe, by he European Union and by the European Union NextGenerationEU/PRTRAbstract
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.