Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
FULLY SUBMERGED POINT ABSORBER IN SANTA CATARINA, BRAZIL - A FEASIBILITY STUDY
Submission Author:
Leandro Souza Pinheiro da Silva , SP
Co-Authors:
Thiago Pontin Tancredi, Nataliia Sergiienko, Helio Mitio Morishita, Leandro Souza Pinheiro da Silva
Presenter: Leandro Souza Pinheiro da Silva
doi://10.26678/ABCM.COBEM2017.COB17-1253
Abstract
The use of renewable energies is playing a major role to attend the rising energy demand and to reduce the environmental issues associated with the fossil fuels. In addition, renewable sources contribute to diversifying the energy mix, increasing the reliability of the system and promoting local potentials. In this regard, ocean wave energy remained insufficiently exploited in Brazil, and Santa Catarina has suitable wave resources for the installation of wave energy converters. Among the sites in Santa Catarina, Imbituba has shown a valid candidate for wave energy due to technical aspects. The purpose of this work is to estimate the power available in Imbituba, Santa Catarina, and the performance of a fully submerged point absorber based on the CETO 5 technology in the site. The hydrodynamics are grounded on the linear wave theory, and the fully submerged point absorber dynamics are described using spectral domain model. The device optimal condition is evaluated using a parametric analysis to define the best-fixed magnitude of tether stiffness and PTO damping for Imbituba, which includes all sea states. Imbituba has shown a feasible site with a power per unit of horizontal area of 24.4 kW/m. The results estimate a power absorption of 15.3 kW per device, which is achieved for a PTO damping equal to 90 kN.s/m and a tether stiffness equal to 90 kN/m.
Keywords
wave energy, point absorber, Santa Catarina, feasibility study, CETO
