Applied Fluid Mechanics (7th Edition)
7th Edition
ISBN: 9780132558921
Author: Robert L. Mott, Joseph A. Untener
Publisher: PEARSON
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Chapter 12, Problem 12.6PP
For the system shown in Fig. 12.11 the pressure at A is maintained constant at
40, and branch 2 is 4-in Schedule 40. Calculate the volume flow rate of water for each of the following conditions:
- Both valves open.
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Problem #4
If the pressure difference between points 1 and 2 is 25 psi, what
will be the flow rate? The pipes are galvanized iron with
0.0005 ft. Take v =
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Kis
=
minor losses.
10 in. dia
1.
2000 ft, 8 in. dia
A
B
1600 ft, 6 in. dia
с
2.
800 ft, 10 in. dia-
Compute points on the velocity profile from the pipe wall to the centerline of a 3/4-in Type K copper tube if the volume flow rate of water at 60'F is Q 0.5 gal/min. Use increments of 0.05 in and include the velocity at the centerline.
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Chapter 12 Solutions
Applied Fluid Mechanics (7th Edition)
Ch. 12 - Figure 12.7 shows a branched system in which the...Ch. 12 - Using the system shown in Fig. 12.2 and the data...Ch. 12 - In the branched pipe system shown in Fig. 12.8...Ch. 12 - In the branched-pipe system shown in Fig. 12.9...Ch. 12 - A 160mm pipe branches into a 100mm and a 50mm pipe...Ch. 12 - For the system shown in Fig. 12.11 the pressure at...Ch. 12 - Solve Problem 12.4 using the Cross technique.Ch. 12 - Solve Problem 12.3 using the Cross techniqueCh. 12 - Find the flow rate of water at 60Fin each pipe of...Ch. 12 - Figure 12.13 represents a spray rinse system in...
Ch. 12 - Figure 12.14 represents the water distribution...Ch. 12 - Figure 12.15 represents the network for delivering...Ch. 12 - Work Problem 12.4 using PIPE-FLO software. Display...Ch. 12 - 2. Enhance the program from Assignment 1 so that...Ch. 12 - Write a program or a spreadsheet for analyzing...
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- Problem 2. Water at 150°F is pumped at the rate of 60 gal/min from a reservoir at atmospheric pressure. The gauge pressure at the end of the discharge line is 42 psi. The discharge point is 12 ft above the level is the reservoir and the suction line is 6 ft above the level of the reservoir. The discharge line is a 1 ½ in. nominal dimeter steel pipe with a schedule number of 80. The pressure drop due to friction in the suction line is known to be 0.8 psi, and that in the discharge line is 7.2 psi. The mechanical efficiency of the pump is 70%. Calculate (a) the developed head of the pump and (b) the total power input. (c) If the pump manufacturer specifies a required NPSH of 8 ft, will the pump be suitable for this service?arrow_forward4. A special oil is to be used in an absorption tower. The preliminary design of the unit requires the oil to be pumped from an open tank with a 10 ft liquid level above the floor and forced through 150 ft of 3 inches schedule 40 pipe with a ball check valve and 5 elbows into the top of a tower 30 ft above the floor. The operating pressure in the tower is to be 52 psig and the oil requirement is estimated at 50 gpm. The viscosity of the oil 15 cP and its density is 53.5 Ibm/ft. Assuming the pumping outfit operates with an overall efficiency of 60%, what horsepower input will be required for the pump motor?arrow_forwardBased on the layout of the water supply system, as show in Figure 1, the pressure, in psi, is estimated be 46 at the faucet in the and floor of the residential building. Consider flow through the delivery pipe, Q = 1.50 cfs and diameter of the pipe, D = 2.65 inch with e = 0.015 inch. Ingore the minor pressure losses and use the following formulae to calculate the major pressure losses. The additional power in hp required to provide the recommended pressure of 58 psi at the building is nearly. Assume f = 0.0175. Use g = 62.4 lb/f3 for water. Water temperature is 20°C (68°F).arrow_forward
- 1arrow_forwardA centrifugal pump takes brine from the bottom of a supply tank and delivers it into the bottom of another tank. The brine level in the discharge tank is 150 ft above that in the supply tank. The line between the tanks is 600 ft of 4-in. Schedule 40 commercial steel pipe. The flow rate is 400 gal/min. In the line are two gate valves, four standard tees, and four ells. The specific gravity of brine is 1.18, the viscosity of brine is 1.2 cP, and the energy cost is $400 per horsepower-year on a basis of 300 days per year. The overall efficiency of pump and motor is 60 %. What is the fanning friction factor, using the churchill equation? What is the loss factor for a wide open gate valve? What is he loss factor for a standard tee ?arrow_forwardProblem 3: A submersible deep-well pump delivers 745 gal/ h of water through a 1-in Schedule 40 pipe when operating in the system sketched in the figure below. An energy loss of 10.5 lb-ft/lb occurs in the piping system. (a) Calculate the power delivered by the pump to the water. (b) If the pump draws 1 hp, calculate its efficiency. Air Storage tank 40 psig Vent Well Flow casing 120 ft Well level Pumparrow_forward
- Don't use chatgpt. I need right answer.arrow_forwardExample Problem The fluid being pumped is oil with a specific gravity of 0.86. Calculate the energy delivered by the pump to the oil per unit weight of oil flowing in the system. Energy losses in the system are caused by check valve and friction losses as the fluid flows through the piping. The magnitude of such losses has been determined to be 1.86 N.m/N. Pump system. The volume flow rate through the pump shown in figure below is 0.014 m³/s. SOLUTION: +EO PB = 296 kPa Schedule 40 (From Pipe Supplier's Table) Wall Flow Area ao NO ao Thickness DN 50 Schedule 40 (ww) 0.002163 steel pipe 60.3 3.91 52.48 88.9 5.49 77.92 0.004768 08 GENERAL ENERGY EQUATION BETWEEN POINTS A & B: Flow PA/y + Z, + v/2g +h- hg -h = PB/y+ ZB + Vp²/2g 1.0 m %3D Therefore, Ty + 87/(A -A) + ("z - "z ) + ^/(°d - d) = 'y DN 80 Schedule 40 %3D Check valve From continuity equation, v = Q/A, find VA & VB VA = ? steel pipe PA =-28 kPa %3D Vs = ? Pump CHECK ANSWER h =42.9 m, or 42.9 N.m/N %3D 5.arrow_forwardItem#3 A pipe handles a flow rate of 0.002 m³/s. Find the minimum inside diameter that will provide an average fluid velocity not to exceed 6.1 m/s.arrow_forward
- Topics: Fundamental of fluid flow Oil (SG=0.82) entering a pump through an 8-inch diameter pipe at 4 psi has a flow rate of 3.5 cfs. It leaves the pump through a 4-inch diameter pipe at 15 psi. Assuming that the suction and discharge sides of the pump are at the same elevation, find the horsepower delivered to the water by the pump (550 lb.ft/s = 1 HP). Illustrate the problem and show your complete solution.arrow_forward4. If the pressure difference between points 1 and 2 below is 90 psi, what will be the flow rate? The pipes are galvanized iron with ks = 0.0005 ft. Take kinematic viscosity equal to 1.06 x 10-5 ft²/s and neglect minor losses. 10 in dia 1. 2000 ft, 8 in dia A B 1600 ft, 6 in dia C 800 ft, 10 in dia 2.arrow_forwardPlease give a detailed explanation, Don't use chatgpt.arrow_forward
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