Study on Pneumatic Wave Power Conversion System with the Water Valve Rectifier

by Kuniya Watanabe, Tohoku Electric Power Co Inc, Japan,
Hiroyuki Nakagawa, Tohoku Electric Power Co Inc, Japan,
Seigo Kikuchi, Tohoku Electric Power Co Inc, Japan,

Document Type: Proceeding Paper

Part of: Ocean Energy Recovery


We experimentally and theoretically studied the energy conversion characteristics on a new type of wave power conversion system with water valves. The hydraulic model experiment was performed in regular waves using a nozzle as a dummy load with some parameters of submerged depth of the water valve, nozzle ratio, height of incident wave and wave period. It was proved from the experimental results that the efficiency of the water valve is equal to or higher than that of such a mechanical valve as conventional flap valves, that the influences of wave period and load change to the new system is less than to the conventional oscillating water column type wave power converter. In addition, it was confirmed that the water valve was effective as a safety system.

Subject Headings: Pneumatic systems | Hydro power | Energy infrastructure | Valves | Hydraulic models | Hydrologic models | Water conservation | Water resources

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