Francis turbine using the potential energy of the flow to the turbine spins (pressure difference)-Water from the upstream dam is in the cellars of reinforced concrete or steel pipe down the turbine, due to the pressure difference between the upper trênh and lower = > water flows through the wings of impeller = > do spin the impeller, and filmed by the generator shaft impeller is connected to the transmitter shaft-Adjust the speed by turning the wheel speed wing opening direction (increase/decrease water flow)
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