Open channel axial hydroelectric generator is composed of micro axial hydraulic
turbine and generator mounted in one shaft. Hydraulic turbine is mainly composed of
inlet guide vane, rotating impeller, draft tube, main shaft, base, bearing et al. As high
pressure fluid is guided into draft tube, vacuum is formed. Upstream water guided by
inlet channel and volute would enter guide vane and force the rotor to rotate.
Therefore, the high pressure energy and high velocity dynamic energy is transformed
