3. A pump draws water from a 20 cm diam suction pipe and discharges through a15 cm diam pipe in which the velocity is 3.60 m/s. The pressure is-34.465 kPaat A in the suction pipe. The 15 cm diam pipe discharges horizontally into air atC. To what height h above B can the water be raised if B is 1.8 m. above A and20 hp is delivered to the pump? Assume that the pump operates at 80 %efficiency and that the frictional loss in the pipe between A and C is 3 m.Given:Suction pipeDischarge pipe1.80 mpumpDatum lineDA = 20 cm = 0.20 mDe = Dc = 15 cm 0.15 mPA=- 34.465 KPa (suction pressure)Ve = Vc = 3.6 m/sPc 0 (atmospheric pressure)BHP = 20 hpPump efficiency = 80%HLA-C) = 3 mRequired:

Answered: Image /qna-images/answer/f58ff187-336e-41c3-ad80-b10945fff3b7.jpg

Answered: 3. A pump draws water from a 20 cm diam…

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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During a flow of 450 L/s, a pressure of 65 kPa was measured at point C in 320 mm diameter horizontal the supply line of water turbine and a -47 kPa pressure T. was measured at point D, 2 m below point C at the 460 diameter exit pipe. mm Compute the total head extracted by a. the turbine. b. Compute the power supplied to the turbine in horsepower.
Elev A Water Elev C Elev B Water flows from Reservoir A (Elev 138 ft.) to a turbine (Elev 75 ft.) then discharges into tailtrace B (Elev 26 ft.) as shown. The head loss from (A) to (1) is 4 times the velocity head in the pipe, and the head loss from (2) to (b) is 0.96 times the velocity head in the pipe. If the flow rate in the pipe is 34 ft3/s, diameter of all pipes is 26 in, calculate the horsepower generated by the turbine. Use 1 hp = 550 lb-ft/s. Round off to the nearest whole number.
Q6
The flow is opened to the atmosphere at point D which is fed by a very wide reservoir that has a water surface elevation of (5+) meters as shown in the figure given below. Elevation of the horizontal axis BC is 1 meter. At sections AB the diameter of the pipe is (0.2+- meters and CD the diameter of the 100 pipe is (0.3+: meters. The flow is ideal (inviscid) and absolute atmosphere pressure is 9.81 N/cm?. Considering the pipe's diameter is (0.15+; m at section BC, find the discharges and the 100 а. velocities of the flow at other sections (AE, EB, BC, CF, FD). Draw the energy and hydraulic grade lines of the system. b. Assuming the system discharge is constant and has the value you have found in (a), calculate the minimum pipe diameter that the section BC can take and draw the energy and hydraulic grade lines of this situation. Note: Absolute vapor pressure of water is 2.26 kN/m?. 10 A E 2.5 D B m
A pump is discharging 12 lit/sec ofwater through 100mm diameter smooth steel pipe. When the pump is 720 kPa, the discharge pipe is at a point 540m distant from the pump and 45m higher in elevation. a. What is the velocity of flow on the discharge side of the pump? b. Assumingf= 0.025, compute the head loss of the pipe. c. Compute the pressure expected in the discharge pipe. 2 45 m 540m - 100mm dia
3-160 A 5-m-long, 4-m-high tank contains 2.5-m-deep water when not in motion and is open to the atmosphere through a vent in the middle. The tank is now accelerated to the right on a level surface at 2 m/s2. Determine the maxi- mum pressure in the tank relative to the atmospheric pressure. Answer: 29.5 kPa 1.5 m 2.5 m Vent Water tank FIGURE P3-160 5 m 2 m/s2
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3) A centrifugal pump delivers water between two reservoirs with a 300 ft. elevation difference (Az). The 12-in diameter suction pipe (f1= 0.020) is 100 ft. long (L1) and the 10-in diameter discharge pipe (f2= 0.026) is 5000 ft. long (L2). The pump has a performance curve defined by the equation: h, = 375 - Q² where h, is the pump head in feet and Q is the discharge in ft/s. a) Calculate the discharge, Q. b) Calculate the NPSHA. Assume standard atmospheric conditions, 60°F water, and a pump elevation 8 ft. above the lower reservoir Az D, L2 2 D, Ly. ft LOM
Determine (a) the discharge in the tube immediately after it is opened. Determine (b) the time for the water surface in each tank to be at the same level. Determine (c) the time for the difference in the water surface to be 4 meters.....
A 30 cm pipe is connected by a reducer to a 10 cm pipe. points 1 and 2 are along the same elevation. the pressure at 1 is 200 Kpa. the flow is 30 litres/s and the energy lost between 1 and 2 is equivalent to 20 Kpa. Compute the pressure at 2 if the liquid flowing is water.
Homework 14 |A cylindrical vessel closed at the top and bo om is 300mm inn diameter, 1m long and contains water up to a depth of 0.8m. The air above the water surface is at a pressure of 60 KPa. If the vessel is rotated at a speed of 250n rpm about its ver cal axis, nd the pressure head at the bo om of the vessel at the center point and at the edge.
Water flows from Resorvoir A (Elev 133 m.) to a turbine (Elev 76 m.) then discharges into tailtrace B (Elev 30 m.) as shown. the head loss from (A) to (1) is 2 times the velocity head in the pipe, and the head loss from (2) to (b) is 1.49 times the velocity head in the pipe. if the flow rate in the pipe is 35 ft63/S, diameter of all pipes is 25 in., calculate the horsepower generated by the turbine. Use 1 hp = 550 lb-ft/s.

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