QUESTION B3 (20 Marks)

Olive oil with a specific gravity of 0.92 and a dynamic viscosity of 0.1 Pa's needs to be pumped

from a storage tank at ground level to an elevated storage tank 10 m above the ground level pump,

at 10 L/s. The discharge of pump consists of steel (E = 0.025 mm) two pipes in series, the first

pipe is 15 m long with two 90° smooth flanged bends and has a diameter of 80 mm. The second

pipe is 20 m long with two 90° smooth threaded bends and has a diameter of 100 mm. There is a

20° expansion between the two pipes and the discharge into the storage tank has an exit lost

coefficient of 1. Calculate the pumping power required if the pump is 80 percent efficient.