Pump problem-2
Thursday, July 21, 2022
9:26 PM
Problem. The water system in a suburban area consist of an old 20 cm pipeline 750 m long which conveys water from a pump to a reservoir whose water
surface is 105 m higher than the pump. Water is pumped at the rate of 70 liters/sec. Neglecting minor losses.
a. Determine the head added by the pump using the 20 cm pipeline. Assume f = 0.033.
b. If the old pipe is replaced with a new 25 cm ∅ pipe, compute the energy supplied by the pump.
From <https://www.facebook.com/groups/fluidmechanics2>
Solution:
B
L=750 m
Q= 70L/s= 70x10-3m3/s
Friction factor, f= 0.033
ZB=105m
PUMP
A
a. Determine the head added by the pump using the 20 cm pipeline.
Bernouli and Energy Eqn Page 1
Bernouli and Energy Eqn Page 2
b. If the old pipe is replaced with a new 25 cm ∅ pipe, compute the energy supplied by the pump:
Bernouli and Energy Eqn Page 3
Watch video lecture of this video to understand step by step from below link:
https://youtu.be/ts3vWdYbx4A
Bernouli and Energy Eqn Page 4