Problem 3. A pump is to be placed in a 9-in-diameter water pipeline with a static headHs = 27.3 ft. The pipeline length is 6750 ft with a friction factor of 0.014. The minor lossessum to K = 18.0. The pump characteristic curve in the table below is for a single pumpat an operating speed of 1800 rpm.FlowHead(gpm)(ft)Efficiency(%)097.5020096.03540093.26360090.07570087.67980085.18290082.083.61,00079.482.51,10074.2811,20071.2741,40060.455Using pump affinity laws, determine the operating point and the required mechanical power(in horsepower) for the following cases:a. A single pump,b. A single pump running at 2160 rpm. Develop a new characteristic curve for the in-creased pump speed by scaling the Q and hp values above (1800 rpm).

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Answered: Problem 3. A pump is to be placed in a…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Problem 1. Two identical series pumps are placed in a pipeline as shown below. The pipeline has two parallel pipes with data shown. Determine the operating point for the pumps and the efficiency when the power input is 96 hp. Neglect minor losses. Pa 1.50 m 1 EA = 100 ft (m) H (e\m) O 0 8.08 897 diameter 08.0 e.20 Pipe C 2400 ft - 14 in f=0.018 Single pump characteristic curve: 1.21 210 00.0 00.0 30.I Q (gpm) H (ft) 0 225 500 218 1000 208 1500 190 2000 160 Pipe A 3500 ft 18 in f = 0.017 EB = 350 ft
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A municipality wants to determine the flow rate into the plant based on pipe size, elevation difference, and assumed roughness, for the water supply reservoir is shown in the figure below. The pipe is an old 4-inch diameter Cast Iron with a Hazen Roughness coefficient of 100 & 223 feet long. The difference in elevation is 62 feet. The pipe has a strainer at the entrance (k-1.9), a valve (k=8.6), a check valve (k = 2:7) and 3- 90° bends (k-0.83). The flow exits into a receiving pond at the WTP. Provide the flow rate in Gallons Minute. per WTP Az
Qs/Three pipes No. (1), (2) and (3) are connected in series as shown in Figure No. (4). Find flow rate fro Reservoir A to Reservoir B. Physical properties of the pipes are listed in Table below. Pipe Length of Pipe Diameter of Pipe Coefficient of friction No. L d. f (mm) | (mm) 1 300 300 0.019 150 200 0.021 250 250 0.02 Resaros A 180(m) Pipeci) Pipery Resemi PipeC) -~3
Three pipes 1, 2, 3 are connected as shown. If the total discharge forthe system is 610 L/s and the friction factor f is equal for all pipes,then:What is the flow rate (in L/s) in pipe 3?
What is the required pump power (Pa) for the system below? The source reservoir is on the right side of the figure The outflow is released as a water jet to the atmosphere (on the left) Discharge rate is 0.11 m3/s Pipe total length is 180 m Pipe diameter is 0.2 m Friction factor (f) is 0.01 Minor losses are negligibleCHOOSE ONE: 25 KiloWatt 169 KiloWatt 269 KiloWatt 112 KiloWatt
Problem 7: The two pumps in problem 6 are now arranged in parallel. The static head is 40 ft. The pipe diameter is 9-in of 1200 ft length and the minor loss coefficient is 20. Determine the operating condition and power output (Q, head, and efficiency) and the power output for the system of two pumps. Use f= 0.022. What is the flow rate and efficiency of each pump?
A pipeline with a pump leads to a nozzle as shown. Find the flow rate when pump develops an 80 ft (24.4 m) head. Assume head lost in the 6-inch (152 mm) pipe to be five times its velocity head while the head lost in the 4-inch (102 mm) pipe to be twelve time its velocity head. (a) Compute the flow rate (b) sketch the energy grade line and hydraulic grade line, and (c) find the pressure head at the suction side. 8 80 (24.4 m) 3" jet (76.2 mm) 8 70 (21.3 m) Line 2 6" (152 mm) El 30 (15.2 m) Line 1 PUMP (ww zo1)
A centrifugal pump having a head-capacity relationship given by the pump curve equation h₂ = 180 - 6.10 × 104 Q², with ha in feet when Q is in gpm, is to be used with the system shown in the figure. For Z2 - Z₁ = 50 ft, what is the expected flowrate if the total length of constant diameter pipe is 600 ft and the fluid is water? Assume the pipe diameter to be 4 in. and the friction factor to be equal to 0.02. Neglect all minor losses. (2) (1) Pump 22
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Point A in the suction pipe is 1 m below the pump. It is mounted with anopen manometer which reads a vacuum of 20 cm of mercury. The pipe is10 cm in diameter and the flow is 35 liters/s of water. Compute the totalenergy at point A with respect to a datum through the pump.
For the setup shown in the figure :

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