Question

Ten turbines are installed in a hydroelectric power station, each with a diameter of 4.5 m impeller and each generating a mechanical power of 54 MW at 107 rpm and with an efficiency of 93.8%, for a net head of 65 m. A) Determine the specific speed of each turbine in dimensionless form and in units of the American system. B) What type of turbine should have been selected? Justify your answer. B) Calculate the flow that passes through each turbine. C) If the friction losses in the intake pipe are 11 m, determine the diameter of the pipe if its length is 400 m. The pipe is concrete with a roughness of 3 mm.

Answer 1