Development of eco water turbine adoptable for extremely low head

目的是研制能利用小于2m的超低水头水力能量高效发电的生态小型涡轮机。重点研究了叶片和流道的形状、复杂叶片表面以及改善涡轮机性能的方法。对瀑布式涡轮机和Savonius涡轮机两种涡轮机进行了试验。因此，对于瀑布型涡轮机，横流式转轮在较宽的转速范围内比冲击式转轮具有更好的性能。结果表明，弯道能有效地控制瀑布的位置，使瀑布的稳定生成成为可能。在Savonius转轮上采用亲水或疏水叶片进行性能测试，未观察到显著差异.

It aimed at developing eco small water turbine that it was possible generate power with high efficiency from hydraulic energy of extremely low head, less than 2 m. It was especially focused on shape of blade and channel, sophisticated blade surface and investigated for improvement of turbine performance. Two kinds of turbines, waterfall type turbine and Savonius turbine, were tested. As a consequence for waterfall type turbine the cross flow shaped runner shows better performance under wider range of rotation speed than that of the impulse runner. The curved shaped channel was shown to be effective in control of waterfall position, and then it was possible for stable generation. Theperformance test adopted hydrophilic or hydrophobic blades on Savonius runner was not observed significant difference.