Engineering, 26.10.2021 22:20 quintinlarrieu

A francis turbine is used in an installation to generate power. The power output is 115000 hp under a head of 480ft. The outer radius of the rotor is 6.75ft; the inner radius is 5.75ft. The rotational speed is 180 RPM, and the blade height is 1.5ft. The turbine efficiency is 0.95 percent. The absolute velocity leaving the rotor is in the radical direction. Required:
Determine the angle that the absolute velocity entering the rotor makes with radial direction.

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A francis turbine is used in an installation to generate power. The power output is 115000 hp under...