Question

A farmer wants to pump water from a river to a very big open
storage tank nearby using a 55-m long, 16-cm diameter plastic pipe
with 5 threaded 90° regular bends, 5 threaded 45° regular bends,
and one fully open gate valve. The water velocity near the river
surface is 2.7 m/s and the pipe's *inlet* is placed in the
river normal to the direction of water flow to take advantage of
this water speed. The elevation difference between the river and
the free surface of the tank is 8.0 m. For the flow conditions
inside the pipe, the friction coefficient may be assumed constant
at 0.015. The farmer will use a pump with a curve represented
by:

h = 23 - 0.84
Q^{2 }
where h is in meters and Q in gal/min.

**Calculate the volumetric flow rate at which the water is
transferred to the tank at these conditions.**

Answer #1

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