Energy efficient system and method for reducing water...

B - Operations – Transporting – 63 – B

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B63B 1/38 (2006.01)

Patent

CA 2310430

An energy efficient system for reducing the water friction on the hull of a marine vessel (10). The contact of water with the portion of the outer surface of the hull of a marine vessel (10) which normally engages the water is reduced by the strategic induction of pressurized or compressed air or gas to cover that outer surface. The compressed air is retained on the outer surface by various grooves (30), channels (66) or semi-flat surfaces (124) running the length of the vessel's bottom and in certain applications vertical sides, which prevent the flow of the compressed gas to the surface of the water. The pressurized air or gas is recaptured before exiting the stern or sides and recycled to the bow through the means of an energy efficient circulation system (34, 36, 37, 38), thus recovering the energy in the compressed air or gas which has flowed from bow to stern. The larger and the deeper the hull displacement, the greater is the efficiency realized by the recycling of the compressed air or other gas.

Système à haut rendement énergétique pour réduire le frottement de l'eau sur la coque d'une embarcation (10). Le contact de l'eau avec la partie de la surface extérieure de la coque d'une embarcation (10), qui vient normalement en contact avec l'eau est réduit par l'induction stratégique d'air ou de gaz pressurisé ou comprimé, de sorte que cette surface extérieure soit recouverte. L'air comprimé est retenu sur la surface extérieure par diverses rainures (30), canaux (66) ou surface semi-plates (124) s'étendant sur la longueur de la carène de l'embarcation ou dans certains côtés verticaux, ce qui empêche l'écoulement du gaz comprimé vers la surface de l'eau. L'air ou le gaz pressurisé est recapturé avant qu'il sorte de l'arrière ou des côtés et est renvoyé vers l'avant au moyen d'un système de circulation à haut rendement, ce qui permet la récupération de l'énergie de l'air ou du gaz comprimé s'écoulant de l'arrière vers l'avant. Plus le déplacement de la coque est important et profond, plus la remise en circulation de l'air ou du gaz comprimé est efficace.

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