Wave power generation device

TL;DR: In this paper, a shape of the lowermost part of a float is selected to keep resistance of water when the float is moved up and down due to difference between buoyancy and gravity in deep part of sea where water is almost static without influence of surface wave as big as possible.

Abstract: PROBLEM TO BE SOLVED: To provide a wave power generation device of improved wave energy collection ratio. SOLUTION: A shape 4 of the lowermost part of a float is selected to keep resistance of water when the float is moved up and down due to difference between buoyancy and gravity in deep part of sea where water is almost static without influence of surface wave as big as possible, and reversely a smooth cylinder shape 1 is selected near surface of sea to minimize force to move the float up and down by wave, and natural frequency of up down motion of the float is made coincide in a range of 0.8 to 1.6 times of annual average wave frequency at a place where the device is moored. Consequently, collection ratio of wave energy is improved. A wave power generation device equipped with an electrolysis device is moored on sea and high pressure hydrogen gas is automatically accumulated in a tank floating on sea. COPYRIGHT: (C)2006,JPO&NCIPI