Several types of oscillating water column (OWC) type wave energy converters (WECs) are researched and developed in the world. They are floating types and fixed types. In case of a fixed type, wave-dissipating caissons could be replaced by WECs of an OWC type. In OWC types, installation of the projecting walls (PWs) is useful in order to improve power take-off (PTO) performance. In this study, a double-dissipating caisson was used as an OWC type WEC with PWs. A front caisson of the double caisson seems to be the area surrounded by PWs and a back caisson can be seen as an OWC. The paper studied the basic property of the primary conversion from wave power to pneumatic power from model tests in a wave tank. It was found that the wave height strongly affects the behaviors of OWC motion and air pressure. Finally, the primary conversion was affected by wave height. Besides, the concept of use of a double caisson was useful for the primary conversion over 80% evaluated using test data.
Basic Characteristics of the Primary Conversion of an Oscillating Water Column Type Wave Energy Converter Installed on a Wave-Dissipating Double Caisson
Contributed by the Ocean, Offshore, and Arctic Engineering Division of ASME for publication in the Journal of Offshore Mechanics and Arctic Engineering. Manuscript received June 28, 2018; final manuscript received February 10, 2019; published online March 20, 2019. Assoc. Editor: Francisco J. Huera-Huarte.
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Ikoma, T., Masuda, K., Eto, H., and Shibuya, S. (March 20, 2019). "Basic Characteristics of the Primary Conversion of an Oscillating Water Column Type Wave Energy Converter Installed on a Wave-Dissipating Double Caisson." ASME. J. Offshore Mech. Arct. Eng. December 2019; 141(6): 061902. https://doi.org/10.1115/1.4042943
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