Question

Water at 20 ^{0}C is pumped at a rate of Q4= 0.022
m^{3}/s from lower reservoir to a higher reservoir with a
height difference of H4=43 m as shown in the figure. The flow is
assumed steady and incompressible. If irreversible losses in the
pipe can be neglected, calculate the pump efficiency in percent, if
the electric motor is rated at P4=29.4 kW and the motor efficiency
can be assumed to be n4=82%.

Answer #1

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