Caisson for absorbing wave energy

E - Fixed Constructions – 02 – B

Patent

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Details

E02B 9/08 (2006.01) E02B 3/06 (2006.01) F03B 13/14 (2006.01)

Patent

CA 2348414

A caisson (1) provided with at least one air pocket (5), and at least one vertical duct or conduit (2) extending transversally along the whole portion of the caisson (1) where the respective air pocket (5) is present. The lower portion of the caisson (1) is filled with water (6), and the vertical duct (2) extends upwards, and communicates with the outside without reaching the sea surface. The height of the air pocket (5), starting from the ceiling of the caisson (1) towards its base, being adjusted so as to obtain the resonance condition, in which the period of the detected pressure fluctuations, at the upper opening (3) of the vertical duct (2), is equal to the period of detected pressure fluctuations of the air pocket (5). Inside the vertical duct (2) turbines may be installed in order to obtain energy conversion.

L'invention concerne un caisson (1) comprenant au moins une poche d'air (5) et au moins un conduit vertical (2), lequel s'étend de manière transversale le long de la partie du caisson (1) renfermant ladite poche d'air (5). La partie inférieure de ce caisson (1) est remplie d'eau (6), ledit conduit vertical (2) s'étendant vers le haut de manière à communiquer avec l'extérieur, sans pour autant atteindre la surface de la mer. La hauteur de la poche d'air (5), entre le toit du caisson (1) et le fond de ce dernier, est par ailleurs réglée de manière à obtenir un état de résonance, dans lequel la période de fluctuation de la pression de l'eau relevée au niveau de l'ouverture supérieure (3) du conduit vertical (2) est égale à la période de fluctuation détectée dans la poche d'air (5). Des turbines peuvent en outre être installées à l'intérieur dudit conduit vertical (2), pour la conversion d'énergie.

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