OS2-08 極浅水流を有効利用するジャイロ形マイクロ水車の特性(OS2 自然エネルギー)

概要

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We are under obligation to conserve natural ecosystem and to coexist with nature, for the next leap in the hydroelectric technologies. In such circumstances, it is required to prepare still more several types of the hydraulic turbines applicable to die individual water environment (head/capacity). To meet such demands, the authors have proposed the new type hydraulic turbine, named "Gyro-Type Hydraulic Turbine", composed of some blades with high aspect ratio and the rotor is submerged nearly parallel to the stream. The turbine is suitable for shallow streams with high velocity in mountain torrents and/or rivers. The rotor has the self-motive power and is driven by the drag force of the blade facing to the downstream at the low rotational speed. With the increase of the rotational speed, however, the rotational torque comes to be caused by the lift force of the blade not only facing to the upstream but also facing to the downstream. The maximum torque/output is at higher rotational speed, which is desirable as the turbine performance for the micro hydroelectric power generation, and the output can be improved with the twisted blades.
2005-06-28