| Summary: | 碩士 === 國立勤益科技大學 === 機械工程系 === 101 === Ocean wave and wind energy are kinds of huge and never ended energy, in the time of rapid developing and energy deficit, both of them should be exploited to content human beings need. In this research, a mechanism for capturing the ocean wave as well as wind energy is designed, which contains a set of bow shape propellers fixed to a rotatable pole by a fordable arms, when ocean wave or wind hit the bow shape propellers, the line momentum of the concave surface should higher than the convex surface. The angular momentum is the product of line momentum and arm length, if length of arm in convex side is shortened with a fordable device, then the difference of angular momentum with the other side will be increased. In order to enlarge the momentum difference on both concave and convex side, holes with one way stop are setting up, when the wave or wind come from convex side, holes will open to lower the resistance and line momentum. Except that, some strips are fixed onto the concave surface to change the return angle of the wave or wind so as to increase the line or angular momentum.
According to the theoretical calculation, the efficiency of wave energy capture mechanism with improving device can be 100% higher than the one without. Also, by practical testing with the real modal only with one way stop hole, almost 50% higher efficiency obtained no matter it was driven by wave or wind.
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