The pump in the figure is used for washing the boiler pipes in a thermal power plant. When the pump takes 20 degrees Celsius water at a flow rate of 79 m3/h from the tank, which is open to the atmosphere 5 m below the pump level, and discharges it to the atmosphere through a nozzle with a 4 cm outlet diameter, a total head loss of 440 kPa occurs. The diameter of the pipes used in this system is 15 cm and the density of water at 20 degrees Celsius is 998 kg/m3. The pump's own height is neglected.

The pump in the figure is used for washing the boiler pipes in a thermal power plant. When the pump takes 20 degrees Celsius water at a flow rate of 79 m3/h from the tank, which is open to the atmosphere 5 m below the pump level, and discharges it to the atmosphere through a nozzle with a 4 cm outlet diameter, a total head loss of 440 kPa occurs. The diameter of the pipes used in this system is 15 cm and the density of water at 20 degrees Celsius is 998 kg/m3. The pump's own height is neglected.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Fluid Dynamics

The study of the flow of gases and liquids, usually in and around solid surfaces, is known as fluid dynamics in physics and engineering. Fluid dynamics, for example, can be used to evaluate the movement of air through an airplane wing or the surface of a vehicle. It can also be used in ship design to increase the speed at which ships pass through water.

Question

Dpipe: 15 cm
The pump in the figure is used for washing the
boiler pipes in a thermal power plant. When the
pump takes 20 degrees Celsius water at a flow rate
of 79 m3/h from the tank, which is open to the
atmosphere 5 m below the pump level, and
discharges it to the atmosphere through a nozzle
with a 4 cm outlet diameter, a total head loss of 440
kPa occurs. The diameter of the pipes used in this
system is 15 cm and the density of water at 20
degrees Celsius is 998 kg/m3. The pump's own
height is neglected.
PUMP
Dod=4cm
a) What is the hydraulic power (kW) supplied to the water?
b) If the efficiency of the electric motor is 89% and the power of the electric motor is 568 kW, what is the
pump shaft power (kW) and pump efficiency?
c) What is the pressure difference (kPa) between the inlet and outlet of the pump?

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