Hydrokinetic energy exploitation under combined river and tidal flow

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dc.check.date2021-05-11
dc.check.infoAccess to this article is restricted until 24 months after publication by request of the publisher.en
dc.contributor.authorFouz, D. M.
dc.contributor.authorCarballo, Rodrigo
dc.contributor.authorRamos, V.
dc.contributor.authorIglesias, Gregorio
dc.contributor.funderXunta de Galiciaen
dc.date.accessioned2019-07-18T11:52:56Z
dc.date.available2019-07-18T11:52:56Z
dc.date.issued2019-05-11
dc.date.updated2019-07-18T11:46:28Z
dc.description.abstractHydrokinetic energy has been mainly studied in areas where the principal driver of the current is the tide. However, in certain areas river discharges play also a principal role. The exploitation of the hydrokinetic resource in such areas has its own peculiarities, dictated by the combined influence of the two driving agents. The objective of this paper is to investigate the exploitation of hydrokinetic energy in the Miño Estuary, the largest estuary in NW Spain and N Portugal, with a focus on the site-specific performance of hydrokinetic energy converters (HECs) and its intra-annual variability. A state-of-the-art hydrodynamics numerical model is implemented and successfully validated based on field data. A third-generation HEC—to be more specific, the new Smart Freestream Turbine (SFT)—is considered, and its performance at the location with the greatest potential is assessed by means of: (i) site-specific efficiency, (ii) availability factor, and (iii) capacity factor. We find that, whereas the site-specific efficiency does not vary significantly, the availability and capacity factors do experience substantial intra-annual (seasonal) variability. In summer and autumn, river discharges are low, and the tide dominates the hydrokinetic resource. In contrast, during winter and spring, the river discharges significantly contribute to the resource, leading to a considerable increase in the availability and capacity factors. More generally, the results imply that in areas subject to combined fluvial and tidal influences the performance of HECs may depart significantly from that in tide-dominated areas, and this departure must be carefully weighed in assessing a project.en
dc.description.sponsorshipXunta de Galicia (Research Project Consolidación e estruturación – 2016 CIGEO (Ref ED431B 2019/30)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationFouz, D. M., Carballo, R., Ramos, V. and Iglesias, G. (2019) 'Hydrokinetic energy exploitation under combined river and tidal flow', Renewable Energy, 143, pp. 558-568. doi: 10.1016/j.renene.2019.05.035en
dc.identifier.doi10.1016/j.renene.2019.05.035en
dc.identifier.endpage568en
dc.identifier.issn0960-1481
dc.identifier.journaltitleRenewable Energyen
dc.identifier.startpage558en
dc.identifier.urihttps://hdl.handle.net/10468/8200
dc.identifier.volume143en
dc.language.isoenen
dc.publisherElsevieren
dc.relation.urihttp://www.sciencedirect.com/science/article/pii/S0960148119306949
dc.rights© 2019 Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 licenseen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectHydrokinetic energyen
dc.subjectTidal stream energyen
dc.subjectRiver dischargeen
dc.subjectSeasonal variabilityen
dc.subjectHydrokinetic energy converteren
dc.titleHydrokinetic energy exploitation under combined river and tidal flowen
dc.typeArticle (peer-reviewed)en
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