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Análise teórica da influência de perfis sobre a potência de uma Turbina Wells empregada em dispositivos de conversão de energia das ondas

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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.

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Evaluation of the energy extraction of a small-scale wave energy converter

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Wave energy production by a maritime Natural Cave: performance characterization and the power take-off design

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Proceedings ArticleDOI

Modeling of wave energy absorption: A case study for a fishing pier in Brazil

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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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, +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.
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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.