Discharge head – suction head = 100.5 – 12.03 = 88.47 m.
The system resistance which the pump has to overcome is 88.47 m.
3.7 Pump efficiency
The pump does not completely convert kinetic energy to pressure energy since some of
the kinetic energy is lost in this process. Primarily, there are three areas where this energy
is dissipated and not converted to useful work. Pump efficiency is a factor that accounts
for these losses. Pump efficiency is a product of the following three efficiencies:
1. Hydraulic efficiency (primarily, disc friction, which is the friction of the liquid
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