Pelamis extracts energy from the leverage exerted on hydraulic pistons as the device articulates up and down as waves pass along the device. Image: Courtesy of Ocean Power Delivery An impression of the 400 ton wave energy device deployed on the seabed off the Portuguese coast. The central OWC component is obvious in the centre. Image: Courtesy of AWS. Limpet is the grid connected shore based wave energy converter built into a natural coastal recess on the Scottish Island of Islay. This concrete Oscillating Water Column device uses the ambidextrous Well’s Turbine to generate on both parts of the swell cycle. Wave energy devices based on Limpet are now being considered as components for breakwaters and other sea walls. Image: Courtesy of Wavegen The strength of using turbines which provide continuous spin regardless of airflow direction has spawned a number of stand alone OWC wave energy converter designed. This one shows potential arms to act as a concentrating funnel. Image: Courtesy of Energetec.
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