A factory is located near a water fall where the usable head for power generation is 25 m. The factory requires continuous power of 400 kW throughout the year. The river flow in a year is (a) 10 m3/sec for 4 months, (b) 6 m3/sec for 2 months and (c) 1.5 m3 /sec for 6 months.
(i) If the site is developed as a run-of-river type of plant, without storage, determine the standby capacity to be provided. Assume that overall efficiency of the plant is 80%.
(ii) If a reservoir is arranged upstream, will any standby unit be necessary ? What will be the excess power available?