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access icon openaccess Wave power absorption by a submerged balloon fixed to the sea bed

This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received 17/01/2016, Accepted 21/05/2016, Revised 15/04/2016, Published 24/05/2016

The possibility of absorbing wave energy using a submerged balloon fixed to the sea bed is investigated. The balloon is in the form of a fabric encased within an array of meridional tendons which terminate at a point at the top of the balloon and at some radius at the bottom. The expansion and contraction of the balloon in waves pump air via a turbine into and out of a chamber of constant volume. A more refined model than that used by Kurniawan and Greaves [Proc. Second Offshore Energy and Storage Symp., 2015] predicts a similarly broad-banded response, but the maximum absorption is less than previously predicted. Both approaches are compared and discussed.

Inspec keywords: absorption; turbines; wave power generation; balloons

Other keywords: submerged balloon; waves pump air; turbine; sea bed; wave energy absorption; wave power absorption; meridional tendon array

Subjects: Wave power; Tidal and flow energy

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http://iet.metastore.ingenta.com/content/journals/10.1049/iet-rpg.2016.0044
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