2515 ジャイロ形ハイドロタービンの提案 : 性能に及ぼすロータ位置の影響(S47-2 自然の流体エネルギー利用技術(水車),S47 自然の流体エネルギー利用技術)  [in Japanese] 2515 Proposition of Gyro-Type Hydraulic Turbine : Effects of Water Depth on Turbine Performances and Increase of Output  [in Japanese]

To conserve natural ecosystem and coexist with nature, the authors have proposed a new type hydraulic turbine, named "Gyro-Type Hydraulic Turbine" composed of the blades with high aspect ratio. This turbine is suitable for shallow stream with high velocity in mountain torrents and/or rivers, and scarcely disrupts the natural streams and environments because the rotating plane of the submerged rotor is nearly parallel to the stream, without casings and/or pipelines. Moreover, it is not necessary to start the public works on a large scale because the generator connected with the rotor shaft can be easily set on the simple stand. Continuously, in this report, the effects of submerged depth on the output are examined with the experimental result. Waves of the water surface induced from the rotor rotation can be suppressed well with the flat board placed at the surface and the board is effective to make the output increase.