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 7.4PP
A long DN
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Problem 2: A long DN 150 Schedule 40 steel pipe discharges 0.085 m³/s of water from a reservoir
into the atmosphere as shown in the figure below. Calculate the energy loss in the pipe.
10 m
Flow
Water is to be pumped through 1500 ft of pipe from the lower to upper reservoir at a rate of
4 ft'/s, as shown in Figure below. The pipe is cast iron of diameter 8 inch. The pump is 80%
efficient.
(a) Find the velocity and Reynolds number of flow through pipe.
(b) Find the head loss due to friction, h in ft.
(c) Compute the pump head, h, in ft and the pump power needed, Ppump in horse power
(hp).
Given: Density of water, pwater = 1.94 slug/ft'; Viscosity of water, u = 2.05 x 10° slug/ft.s;
Friction factor from Moody Chart, f= 0.021.
Draw sketch and show all calculations.
180 ft
L-1500 ft, D-8 in
Pump
1. Water from a reservoir A 10m elevation is drawn by a motor driven pump to an
upper reservoir B. at 72m elevation. Suction and discharge head loss are 0.15m,
respectively. For discharge rate of 15 li/sec, find the total head for the piping.
Chapter 7 Solutions
Applied Fluid Mechanics (7th Edition)
Ch. 7 - A horizontal pipe carries oil with a specific...Ch. 7 - Water at 40 F is flowing downward through the...Ch. 7 - Find the volume flow rate of water exiting from...Ch. 7 - A long DN 150 Schedule 40 steel pipe discharges...Ch. 7 - Figure 7.14 shows a setup to determine the energy...Ch. 7 - A test setup to determine the energy loss as water...Ch. 7 - The setup shown in Fig. 7.16 is being used to...Ch. 7 - A pump is being used to transfer water from an...Ch. 7 - In Problem 7.815 (Fig. 7.17), if the left-hand...Ch. 7 - A commercially available sump pump is capable of...
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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- A large pipe with a cross-sectional area of 1.00 sg m descends 5.00 m and narrows to 0.500 sg m, where it terminates in a valve at point 1. If the pressure at point 2 is atmospheric pressure, and the valve is opened wide, and water allowed to flow freely, find the speed of the water leaving the pipe. Select one: O a. 1.14 m/s O b. 4.11 m/s O c. 7.11 m/s O d. 11.4 m/sarrow_forwardWater is to be pumped through 1500 ft of pipe from the lower to upper reservoir at a rate of 4 ft'/s, as shown in Figure below. The pipe is cast iron of diameter 8 inch. The pump is 80% efficient. (a) Find the velocity and Reynolds number of flow through pipe. (b) Find the head loss due to friction, hf in ft. (c) Compute the pump head, h, in ft and the pump power needed, Ppump in horse power (hp). Given: Density of water, pwater= 1.94 slug/ft'; Viscosity of water, u = 2.05 × 10° slug/ft.s; Friction factor from Moody Chart, f= 0.021. Draw sketch and show all calculations. 180 ft L = 1500 ft, D = 8 in Pumparrow_forward5. 10 lt / s of water is requested to be transported from A depot to city B. The water level of the A depot is 50 m and the B point is 30 m. The length of the EU pipe in the project has been calculated as 1000m and taken as f = 0.02. The pipe diameter has been chosen as φ90 mm. Since the minimum operating pressure (pressure head) required at point B is 20m, can water be delivered to point B with this system? (Velocity height is negligible)arrow_forward
- m². -5 S Figure shows a portion of a fire protection system in which a pump draws water at 60°F (v =1.21 ×10¯ from a reservoir and delivers it to a point B at the flow rate of 1500 gal/min. Calculate the required height h of the water level in the tank in order to maintain 5.0 Psig pressure at point A h 25 ft A Pump 2600-ft-long 8-in Schedule 40 steel pipe Flow Flow 45-ft-long 10-in Schedule 40 steel pipe Barrow_forwardWater (15 C) is transported from an open reservoir to the atmosphere through a new cast iron pipe (d = 4 in). At the end of the pipe there is a fully open gate valve. Evaluate the maximum flow rate (gal / min) through the pipe.arrow_forwardProblem 3: A large pressurized tank filled with air discharges into the atmosphere. The flow path is a short and frictionless smooth pipe connected to a discharge nozzle. Find a) the flow rate of air and b) pressure in the pipe for the given data. Ignore all frictional losses, including head losses at the entrance to the pipe, at the bend, and at the nozzle. PTank (kPa): 110.0 0.040 (m): Dpipe P atm (kPa): 101 0.015 dNozzle (m): (C): Taum 20 Airarrow_forward
- A pumping system is required that will deliver at least 50,000 GPM against a head of 100 ft is needed for a water ride. The system schematic is given below. Note that the loss coefficient for the pumps accounts for the losses in piping connecting multiple pumps. Use Gould pumps to satisfy this requirement. Submit your loss curve superimposed on the pump curves for the selected pumps in your Excel file. Determine the following. a. The pumps (all the same) to satisfy this requirement. b. The operating point of these pumps. C. NPSHR d. NPSHA K, = 0.28 L, = 50 ft L = 300 ft E = 0.005 ft D = 3.5 ft Q=50,000 GPM u= 2.359x105 slug/ft-s p= 1.938 slug/ft = 1.0 Kext 100 ft K, = 0.6 K, = 0.4 7 ft Pump System K, = 0.28 %3D Kant = 0.5arrow_forwardUse figure below Question : Water at 20 C is to be pumped through 2300 ft of pipe from reservoir 1 to 2 at a rate of 2.5 ft3/s, as shown in the figure. If the pipe is galvanized iron of diameter 7 in and the pump is 75% efficient, what horsepower pump is needed? Neglect minor losses. HINT : pumped through 2300 ft of pipe from reservoir 1 to 2 at a rate of 2.5 ft3/s, & galvanized iron of diameter 7arrow_forwardIn the figure shown, it is desired to pump 40 L/s of water from a natural stream to a small reservoir. The stream is connected to the small reservoir using 3 pipes with properties provided in the table. The overall pump efficiency is 70%. Neglect minor losses. a) Calculate the flow rates in pipes 2 and 3. b) Calculate the mechanical head supplied by the pump to the flow. c) Compute the electric power input required by the pump. Pipe Length Diameter Friction (m) (mm) Factor 1 1000 El. 90 m 250 0.015 2 500 160 0.022 3 600 200 0.025 1 El. 30 marrow_forward
- Water flows through a 200-mm diameter pipe at a velocity of 1 m/s. Find its flow rate in m^3/minarrow_forwardQ1/ Water. p=1.94 slugs/ft' and v=0.000011 ft/s, is pumped between two reservoirs at 0.2 ft/s through 400 It of 2-in-diameter pipe and several minor losses coefficient is(12.2m), as shown in Fig. 1. The roughness ratio is s/d = 0.001. Compute the pump horsepower required. MY (2) Z₂=120ft Z=20 ft Pump Fig.1 D=2 inarrow_forwardConvert 50 GPM to ft/s in a 4" Sch 40 pipearrow_forward
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