CE 704 · Chapter 3
Hydropower Engineering past question
3.5 Estimation of Power and energy potential
A hydropower electrical project has a concrete lined tunnel of 5.0 m diameter operating under a gross head of 200 m. Discharge through tunnel is 28 cumec and having surge tank of 300 m² at the end of tunnel. Head loss due to friction under a steady state condition is 2.5% of gross head. Assume friction factor of tunnel to be 0.015. Find Total length of tunnel; Maximum upsurge and downsurge in the tank; Calculate factor of safety of surge tank. [6]