a) If the pipe connected to the pump inlet has a diameter of 24 mm with length (LCP) of 5 m and Darcy friction factor of 0.03, what would be the actual head rise across the pump for a case where the pump outlet pressure is 200 kPa? The difference in height between pump inlet and outlet is 0.25 m, the tank exit is sharp-edged, and the water level in the tank to the tank exit pipe (HWL) is 2 m. Also, consider that the flow velocity inside the tank is negligible. The value of the actual head rise across the pump is = ? b) What would be the pump motor power if the efficiency is 60%? The value of the pump motor power is = ?

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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According to the question:

a) If the pipe connected to the pump inlet has a diameter of 24 mm with length (LCP) of 5 m and Darcy friction factor of 0.03, what would be the actual head rise across the pump for a case where the pump outlet pressure is 200 kPa? The difference in height between pump inlet and outlet is 0.25 m, the tank exit is sharp-edged, and the water level in the tank to the tank exit pipe (HWL) is 2 m. Also, consider that the flow velocity inside the tank is negligible. The value of the actual head rise across the pump is = ?

b) What would be the pump motor power if the efficiency is 60%? The value of the pump motor power is = ?

Fig 2 shows a water jetting system which consists of a tank, a pump, and an inclined pipe. The
pipe has a diameter of D = 12 mm and is made of cast iron. The diameter of the outlet nozzle of
the pipe is d = 8 mm and the nozzle tip height H = 1 m. The flow rate is 0.0023 m³/s. Take viscosity
as 0.00112 N s/m² and the density 998 kg/m³.
HWL
Pump
Nozzle tip dia. = d
D
LIP
H
LCP
Fig Q2: Water jetting from a pipe.
Work to 4 significant digits. Enter all values using base units or their combinations, i.e. m, m/s, Pa,
N. Do not use multiples as e.g. mm, kPa.
Transcribed Image Text:Fig 2 shows a water jetting system which consists of a tank, a pump, and an inclined pipe. The pipe has a diameter of D = 12 mm and is made of cast iron. The diameter of the outlet nozzle of the pipe is d = 8 mm and the nozzle tip height H = 1 m. The flow rate is 0.0023 m³/s. Take viscosity as 0.00112 N s/m² and the density 998 kg/m³. HWL Pump Nozzle tip dia. = d D LIP H LCP Fig Q2: Water jetting from a pipe. Work to 4 significant digits. Enter all values using base units or their combinations, i.e. m, m/s, Pa, N. Do not use multiples as e.g. mm, kPa.
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