Water is pumped at a rate of 10 litres/s from a pond to an open tank....
Water is pumped at a rate of 10 litres/s from a pond to an open
tank. The pipe is 30 m in length and made of 1-in, Schedule 40 (I.D
= 0.02664 m) commercial steel pipe with the surface roughness of
0.0018 in (0.045 mm). In the pipelines, there are two gate valves,
one globe valve and three 90o long-radius elbows. The surface of
water in the tank is 3 m above the surface of the pond. (The
density of water is 1000 kg/m3 and viscosity of water is
0.001Pa.s)
a. State the static head. [2] b. Characterize the flow of water
discharged to the tank. [6] c. Determine the friction head loss in
the pipeline. [10] d. Calculate the pump head and actual power, in
kW, required if the efficiency is 65%. [6] e. Calculate the cost
for running the pump per hour, if the energy cost is £150 per
kilowatt-
year on a basis of 300 days of operation per year.
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