A new design of Banki's water turbine model for pico hydro in Tabanan Bali

Output power, speed, and efficiency of water turbines are affected by the curvature angle of the blade; this is because the energy of water flowing is absorbed by the blade of turbine. In this paper, the curvature angle of the blade of Banki's water turbine model is investigated to obtain the highest output power, speed, and efficiency of the water turbine. The experimental model is used to investigate the curvature angle of the blade. The result shows that 15° provides a higher output of power, speed, and efficiency than 16°. This is even though 16° is commonly used for commercial production. In this research, “Banki's model produces a maximum of 132 RPM (Revolution Per Minute). The result of multiplying the diameter of the turbine with a generator pulley diameter is equal to 14.