An Assessment of the Feasibility and Energy Potential of Subterranean Oscillating Water Column (OWC) Wave Energy Converters in Ireland
This scientific poster was presented at the 4th INORE symposium, which was held in Dartmouth, England, on 9-14 May 2010.
Abstract: The Oscillating Water Column (OWC) wave energy device is considered to be one of the most common concepts in use for wave energy capture. However it has yet to be demonstrated that energy can be extracted from ocean waves at an economic rate using OWC technology. This is predominantly due to the initial capital cost of the structure. Previous research has established that the approach of using a subterranean chamber for an OWC held considerable promise for the shoreline capture of ocean wave energy. This involves the implementation of underground space technology to construct the chamber within an ocean facing cliff. This form of construction could potentially prove more economically viable than conventional methods of OWC manufacture. Previous research has also validated the design concepts of constructing an OWC within naturally occurring rock and proved that such a technique could produce acceptable hydrodynamic and pneumatic conversion efficiencies. This study aims to develop a wave to wire' model that can predict yearly-averaged power conversion efficiencies for a selection of sites on the west coast of Ireland. This is facilitated through numerical modelling with the Boundary Element Method (BEM) code WAMIT.
Keywords: oscillating water column, Panel Method, Performance Predictions
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