Quantification of the tidal stream exergy in the ría de Vigo (NW Spain)
by Marc Mestres; Maria Griñó; Joan Pau Sierra; César Mösso
International Journal of Exergy (IJEX), Vol. 23, No. 1, 2017

Abstract: The exergy of the tidal currents in the ría de Vigo area (NW Spain) is quantified using the results of a 28-day long simulation of the tidal flows. The results show that the northernmost strait connecting the ría with the Atlantic Ocean is a promising site for tidal energy tapping, in contrast with the energetically weaker estuary. On the basis of the average power density (APD), a 7.5 km² region is identified in this strait as the most advantageous area to install tidal energy converters (TECs), with a total annual exergy of around 3865 MWh/m². Similar analyses using only 14-day simulations change this value in ±16%, depending on whether the tidal cycle considered is apogean or perigean. The study contributes to enlarge the inventory of sites along the NW Spanish coast at which tidal stream energy can be potentially extracted.

Online publication date: Mon, 12-Jun-2017

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