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US 2014/0196451 A1Published application
Wave energy extraction device and method
AssigneeZyba Renewables Limited
InventorWiiliam John Douglas Bateman
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AssigneeZyba Renewables Limited
InventorWiiliam John Douglas Bateman
Estimating the term…
A wave energy extraction device (or paddle) for converting wave energy into mechanical motion is curved in the horizontal plane, with a concave side (11) facing the incoming waves to increase energy capture and a convex side (12) on the lee side to reduce energy dissipation. The concave surface is substantially parabolic or semi-elliptical and the convex side is optionally provided with a substantially Gaussian profile (4) to improve the hydrodynamics and provide additional strength. To simplify connection to a base platform the paddle curvature optionally tapers to a straight edge (1) at the mounting points and the base device can be located either above or below the water surface. One embodiment is also curved about a vertical as well as the horizontal plane to create a spoon- or cup-shaped paddle (9).
A wave energy extraction device to extract energy from water waves through forwards and backwards motion of the device, for use with a wave energy conversion apparatus to convert that energy to a useful form, the device having a height and a width and being arrangeable on the wave energy conversion apparatus so as to be at least partially submerged in the water and comprising:
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A method of extracting useful energy from water waves comprising:
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A device for absorbing water wave energy, comprising a paddle having a backward-facing surface on a first side of the paddle and a forward-facing surface on a second side of the paddle opposite the first side, the backward-facing surface having a high resistance to water motion and the forward-facing surface having a low resistance to water motion, the paddle adapted to be submerged in water such that the backward-facing surface is angled predominantly towards incoming waves and is moved forwards and backwards by incoming waves to absorb their energy with the majority of the paddle remaining underwater over the range of motion of the paddle.
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Dependencies are inferred from the claim text.