The 28-in-diameter pump in Fig. 11.7a at 1170 r/min is used to pump waterat 20°C through a piping system at 14,000 gal/min. (a) Determine the required brake horsepower.The average friction factor is 0.018. (b) If there is 65 ft of 12-in-diameter pipe upstream of thepump, how far below the surface should the pump inlet be placed to avoid cavitation?1170 r/min800700=600Total head. It5KHJidia1003)(500 blp200V1216202428U.S. gallons per minute x 1000Fig. 11.7UNPSH,

Answered: The 28-in-diameter pump in Fig. 11.7a…

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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If a pump requires a minimum of 2.75 m of NPSHA, how high can the centerline of the pump be located above the top of an open tank that supplies 27 C water to the pump? The barometer reads an average of 732 mmHg throughout the year. The tank is 1.82 m high. The pipe friction is 0.7 m and the velocity is 1.22 ?/? .
Performance data for a pump are listed in the following table.Hp (ft) 179 176 165 145 119 84 43Q (gpm) 0 500 1000 1500 2000 2500 3000(a) Plot the system curve for the pump to move water between two open reservoirs,through 2000 ft of 12 in. inner diameter commercial steel pipe containing 5 standard 90°elbows and 2 open gate valves, if the elevation increase is 50 ft. Explain how plot was made.(b) Determine the operating point, i.e., the volumetric flowrate in gpm and pump headin ft.(c) Calculate the power input (horsepower) to the pump at the operating point,assuming its efficiency is 80%. please perform all calculations
An acceptance test was conducted on a centrifugal pump having a suction pipe 25.4 cm in diameter and a discharge pipe 12.7 cm in diameter. Flow was 186 m³/hr of clear cold water. Pressure at suction was 114.3 mmHg vac and discharge pressure was 107 kPag at a point 91 cm above the point where the suction pressure was measured. Input to the pump was 15 hp. a. Determine the pump efficiency b. If the pump runs at 1750 rpm, what net flow, head, and brake hp would be developed and required if the pump speed were increased to 3500 rpm? Assume constant efficiency.
Q.2 A centrifugal pump is required to pump water to an open water tank situated 4 km away from the location of the pump through a pipe f diameter 0.2 m having Darcy's frřiction factor of 0.01. The average speed of waterinthe pipe is 2 m/s. If it is to maintain a constant heac of 5 m in the tank, neglecting other minor losses, the absolute discharge pressure at the pump exit is (a) 0.449 bar (c) 44.911 bar dund (b) 5.503 bar (d) 55.203 bar
18. Repeat Example 6.3 for acetone rather than water, assuming all other conditions are unchanged.
Q1/ liquid is pumped from a ground level reservoir to an overhead tank through a 5 cm ID pipe as shown in Fig. (1): i. What pressure developed by the pump to 45° elbow 8 m Fig. (1) Globe valve Tank 5 m supply water to the tank at the rate of 245 I/min? ii. What is the power required for the pump, if the pump is only 62% efficient? iii. Calculate the available NPSH. If the pump required 12 m NPSH is it suitable to prevent cavitation for this system? why? Given that: u = 0.0016 Pa.s; p 850 kg/m', e/d 0.0035, (Le/d) of Globe valve (open) = 240 (Le/d) of 45° ēlbow = 24 and Pv = 36.6 kPa 25 m 45° Reservoir 45° elbow
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Question -4: Water at 40 °C is pumped from an open tank through 200 m of 50 mm diameter smooth horizontal pipe as shown in the Fig.4 and discharges into the atmosphere with a velocity of 3 m/s. minor loss are negligible. a) If the efficiency of the pump is 70%, how much power is being supplied to the pump b) What is the NSPHA at the pump inlet? (1) 3 m Diameter = 50 mm, PUMP Length = 200 m Fig.4
Q1) Figure Ql shows piping system with pump to drive the oil upward from A (P=PA kPa) to B (P=180 kPa) at a mass flow rate of 3 kg/s. Determine type of flow and calculate required pump power. Given data: oil density and viscosity are 891 kg/m³ and 0.29 N.s/m² respectively. Use Hagen Poiseulli equation for loss: he128µQL/(xpgD“) and Power=Qpghr; Triangle geometry: a²=b²+c² Dripe = 3 mm 15 m Pump 20 m Figure O1
Kindly solve this problem with complete solution so that I can Understand. Correct Final answer: 40.77
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