Wave energy absorber mountable on wave-facing structure

Power plants – Pressure fluid source and motor – Utilizing natural energy or having a geographic feature

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290 53, 405 76, F03B 1312

Patent

active

044034750

ABSTRACT:
A wave energy absorber comprising a caisson mountable on the seaside surface of an existing breakwater or coastal embankment, which caisson has a water chamber with an open side and a rear wall facing the open side. The distance from the open side to the rear wall is longer than one quarter of a wavelength L.sub.c in the water chamber so as to generate a standing wave in the water chamber with a node of the standing wave at a distance L.sub.c /4 from the rear wall toward the open side. A wave-power turbine impeller is pivotally supported in the caisson at the node position, the impeller rotating in only one direction, whereby wave energy is absorbed by the impeller for further conversion into electric or thermal energy. The caisson itself can also be utilized as a breakwater or an embankment.

REFERENCES:
patent: 888721 (1908-05-01), Milbury
patent: 916860 (1909-03-01), Hale
patent: 956796 (1910-05-01), Butler
patent: 970048 (1910-09-01), Harmon
patent: 1887316 (1931-08-01), Lockfaw
patent: 3928771 (1975-12-01), Straumsnes
patent: 4034231 (1977-07-01), Conn et al.
patent: 4115034 (1978-09-01), Smith

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