Open Access
Análise teórica da influência de perfis sobre a potência de uma Turbina Wells empregada em dispositivos de conversão de energia das ondas
Gustavo da Cunha Dias,Sonia Magalhães dos Santos,Elizaldo Domingues dos Santos,Luiz Alberto Oliveira Rocha,Cláudio Rodrigues Olinto +4 more
- Vol. 23, Iss: 1, pp 44-56
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TLDR
In this paper, a recomendacao teorica a respeito de qual perfil aerodinâmico pode ser empregado for rotores de pequenos dispositivos de conversao de energia das ondas do mar em energia eletrica.Abstract:
O presente trabalho apresenta um estudo teorico a respeito da influencia de diversos perfis aerodinâmicos (NACA0012, NACA0015, NACA0018, NACA0020 e NACA0021) sobre a potencia e torque gerados em uma turbina Wells. Em todos os casos avaliados, o rotor possui um raio da turbina rt = 245 mm e uma razao de aspecto de AR = 0.7. O objetivo principal e obter uma recomendacao teorica a respeito de qual perfil aerodinâmico pode ser empregado para os rotores de pequenos dispositivos de conversao de energia das ondas do mar em energia eletrica, mais especificamente coluna de agua oscilante com potencias inferiores a 1 kW. Para realizar a estimativa da potencia e torque foram utilizadas recomendacoes teorico-experimentais da literatura. Os resultados indicaram que o melhor perfil aerodinâmico (NACA0021) e capaz de conduzir a uma potencia mecânica de aproximadamente 319 W, apresentando um desempenho 36 % superior ao perfil NACA0020, que conduziu aos piores resultados.read more
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Evaluation of the energy extraction of a small-scale wave energy converter
TL;DR: In this paper, a small oscillating-watercolumn (OWC) converter composed by tubes tied to the pillars of the structure is presented. But the performance would be better as long as the device is placed in a position where the waves are less influenced by the bottom friction, but it still has the necessary increment of the wave height.
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Wave energy production by a maritime Natural Cave: performance characterization and the power take-off design
Wilson Madaleno Leger Monteiro,António Sarmento,Clarice Pires Monteiro,Jakson Augusto Leger Monteiro +3 more
TL;DR: In this paper, the authors evaluated the energetic performance of a maritime Natural Cave located in Cidade-Velha (Cabo-Verde) for the electricity production purpose.
Proceedings ArticleDOI
Modeling of wave energy absorption: A case study for a fishing pier in Brazil
Leonardo Casagrande Dalla Vecchia,C.C. Scharlau,Carla de Abreu D'Aquino,Vitor Antunes,L. L. Pfitscher +4 more
TL;DR: In this article, the authors evaluated the wave energy absorption at a fishing pier in the town of Balneario Arroio do Silva, coastal south region of Brazil, considering the use of oscillating-water-column (OWC) converters composed by tubes tied to the pillars of the pier.
References
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Journal ArticleDOI
Wave energy utilization: A review of the technologies
TL;DR: In this article, the development of wave energy utilization since the 1970s is discussed, with a focus on the characterization of the wave energy resource; theoretical background, with especial relevance to hydrodynamics of wave absorption and control; how a large range of devices kept being proposed and studied, and how such devices can be organized into classes; the conception, design, model-testing, construction and deployment into real sea of prototypes.
Book
Renewable Energy Resources
John Twidell,Tony Weir +1 more
TL;DR: In this article, the authors present a review of renewable energy technologies, including photovoltaic power technology, wind power technologies, wave power, and geothermal energy technologies with a focus on using energy efficient technologies.
Journal ArticleDOI
Wave energy in Europe: current status and perspectives
Alain Clément,Pat McCullen,António F.O. Falcão,Antonio Fiorentino,Fred Gardner,Karin Hammarlund,George Lemonis,Tony Lewis,Kim Nielsen,Simona Petroncini,M.-Teresa Pontes,Phillippe Schild,Bengt-Olov Sjöström,Hans Christian Sørensen,Tom Thorpe +14 more
TL;DR: In this paper, the progress in wave energy conversion in Europe during the past ten years is reviewed and current activities and initiatives in the wave energy sector at National and Union level are described.
Journal ArticleDOI
Generating electricity from the oceans
TL;DR: In this article, a step-by-step approach for wave and marine current ocean energy conversion is presented, depicting results based on experimental and field observations on device fundamentals, modelling approaches, project development issues.
Journal ArticleDOI
The wells air turbine for wave energy conversion
TL;DR: In this article, the performance of a single plane biplane Wells turbine with or without guide vanes is compared with a wave energy device based on the principle of the oscillating water-air column.