Applied Fluid Mechanics (7th Edition)
Applied Fluid Mechanics (7th Edition)
7th Edition
ISBN: 9780132558921
Author: Robert L. Mott, Joseph A. Untener
Publisher: PEARSON
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Chapter 7, Problem 7.44PP

The test setup in Fig. 7.39 measures the pressure difference between the inlet and the outlet of the fluid motor. The flow rate of hydraulic oil (sg = 0.90 ) is 135 gal/min. Compute the power removed from the fluid by the motor.

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8.) A liquid having a sp.gr. of 20 is flowing in a 50 mm diameter pipe. The total head at a given point was found to be 17.5 Joule per Newton. The elevation of the pipe above the datum is 3 m and the pressure in the pipe is 65.6 kPa. Compute the velocity of flow and the horsepower in the stream at that point. Subject: Fluid Mechanic Lesson: Relative Equilibrium of Liquids Fundamentals of Fluid Flow
Example 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.
Determine the power requirement of the pump shown in Figure 3.0, assuming it has an efficiency of 88%. The system has a loss coefficient of 3.0 up to point A, and K =1.2 from point B to point C. Neglect any losses through the exit nozzle. Additionally, compute the pressures at points A and B. Water 15 m 2 cm 4 cm dia. 5 cm dia. Figure 3.0 400 kPa

Chapter 7 Solutions

Applied Fluid Mechanics (7th Edition)

Ch. 7 - A submersible deep-well pump delivers 745 gal/h of...Ch. 7 - In a pump test the suction pressure at the pump...Ch. 7 - The pump shown in Fig. 7.19 is delivering...Ch. 7 - The pump in Fig. 7.20 delivers water from the...Ch. 7 - Repeat Problem 7.14, but assume that the level of...Ch. 7 - Figure 7.21 shows a pump delivering 840L/min of...Ch. 7 - Figure 7.22 shows a submersible pump being used to...Ch. 7 - Figure 7.23 shows a small pump in an automatic...Ch. 7 - The water being pumped in the system shown in Fig....Ch. 7 - A manufacturer's rating for a gear pump states...Ch. 7 - The specifications for an automobile fuel pump...Ch. 7 - Figure 7.26 shows the arrangement of a circuit for...Ch. 7 - Calculate the power delivered to the hydraulic...Ch. 7 - Water flows through the turbine shown in Fig....Ch. 7 - Calculate the power delivered by the oil to the...Ch. 7 - What hp must the pump shown in Fig. 7.30 deliver...Ch. 7 - If the pump in Problem 7.26 operates with an...Ch. 7 - The system shown in Fig. 7.31 delivers 600 L/min...Ch. 7 - Kerosene (sg = 0.823 ) flows at 0.060m3/s in the...Ch. 7 - Water at 60 F flows from a large reservoir through...Ch. 7 - Figure 7.34 shows a portion of a fire protection...Ch. 7 - For the conditions of Problem 7.31 and if we...Ch. 7 - In Fig. 7.35 kerosene at 25 F is flowing at 500...Ch. 7 - For the system shown in Fig. 7.35 and analyzed in...Ch. 7 - Compute the power removed from the fluid by the...Ch. 7 - Compute the pressure at point 2 at the pump inlet.Ch. 7 - Compute the pressure at point 3 at the pump...Ch. 7 - Compute the pressure at point 4 at the press...Ch. 7 - Compute the pressure at point 5 at the press...Ch. 7 - Evaluate the suitability of the sizes for the...Ch. 7 - The portable, pressurized fuel can shown in Fig....Ch. 7 - Professor Crocker is building a cabin on a...Ch. 7 - If Professor Crocker's pump, described in Problem...Ch. 7 - The test setup in Fig. 7.39 measures the pressure...Ch. 7 - If the fluid motor in Problem 7.44 has an...Ch. 7 - A village with a need for a simple irrigation...Ch. 7 - As a member of a development team for a new jet...Ch. 7 - A fire truck utilizes its engine to drive a pump...Ch. 7 - A home has a sump pump to handle ground water from...Ch. 7 - In Problem 6.107 an initial calculation was made...Ch. 7 - A creek runs through a certain part of a campus...Ch. 7 - A hot tub is to have 40 outlets that are each 8 mm...Ch. 7 - A large chipper/shredder is to be designed for use...
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