Applied Fluid Mechanics (7th Edition)
7th Edition
ISBN: 9780132558921
Author: Robert L. Mott, Joseph A. Untener
Publisher: PEARSON
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Textbook Question
Chapter 11, Problem 11.44PP
Repeat Problem 11.43, except consider that there will be the following elements added to the system:
- A fully open gate value near the water main
- A fully open butterfly valve near the green (but before point B)
- Three standard
- Two standard
- One swing-type check valve.
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Water at 5°C is to be pumped from the river to the bottom of a water tower. The pump is 5 m above the river (dimension "a" on the diagram below) and is supplied by a 6.00 inch schedule 40
pipe. The tank is 19.5 m above the pump (dimension "b" on the diagram below) and is supplied by a 4 inch schedule 40 pipe. The water level in the tank is 4.3 m above the inlet (dimension "c"
on the diagram below). The pump delivers 0.021 m/s. Losses are estimated to be 1.2 m between the river and the pump, and 4.2 m between the pump and the tank.
Discharge line
Suction line
Pump
River
a) Calculate the losses in the suction line in kPa, based on the given head loss in m.
kPa
b) Calculate velocity in the suction line in m/s.
m/s
c) What is the pressure at the inlet to the pump in kPa?
kPa
FROM THE ATTACHED SKETCH, THE GIVEN DATA ARE AS
FOLLOWS:
Pressure loss due to friction
a. Reservoir tank =50,000 liters of water
b. Total Static head is 30 ft.
Pressure loss in plastic pipes (feet of water per 100 ft of tube)
c. Pipe material is plastic and 1.5-inch diameter.
d. There are four 90-degree elbows, one gate valve and one open swing
spm 0.5 in. 0.75 in. 1 in. 1.5 in. 2 in. 3 in.
1.4
4.8
0.0 0.0
0.0
0.4
0.1
0.4
0.8
1.3
1.9
2.7
0,0
0.0
valve.
0.0
1.2
2.5
4.2
6.3
8.8
15.2
26.0
49.7
86.9
e. Total pipe length is 50 ft.
3
0.0
10.0
17.1
25.8
36.3
63.7
97.5
0.0
0.1
0.2
0.2
0.3
4.
0.0
0.0
5
0.0
0.0
0.0
0,0
0.0
6
0.1
0.2
0.3
0.5
0.9 0.1
COMPUTE THE FOLLOWING USING THE PROVIDED TABLE BELOW.
8
4.6
0.6
10
15
20
6.9
14.6
0.8
1.7
2.9
0.0
25.1
1. IF THE TANK IS TO BE FILLED WITHIN 661.35 MINUTES WHEN
EMPTY, COMPUTE HOW MANY GALOONS PER MINUTE (GPM) PUMP
CAPACITY IS NEEDED TO FILL UP THIS TANK., USE 3.78 LITERS/GAL
Pressure loss in valves and elbows (expressed in equivalent length of tube)…
4. Show with sketch how to measure the resistance for the airway of patient.
5. What are the main design parameters of the pump have to be calculated?
Chapter 11 Solutions
Applied Fluid Mechanics (7th Edition)
Ch. 11 - Water at 10C flows from a large reservoir at the...Ch. 11 - For the system shown in Fig. 11.14, kerosene (...Ch. 11 - Figure 11.15 shows a portion of a hydraulic...Ch. 11 - Figure 11.16 shows part of a large hydraulic...Ch. 11 - Oil is flowing at the rate of 0.015m3/s in the...Ch. 11 - For the system shown in Fig. 11.18, calculate the...Ch. 11 - A liquid refrigerant flows through the system,...Ch. 11 - Water at 100F is flowing in a 4-in Schedule 80...Ch. 11 - A hydraulic oil is flowing in a drawn steel...Ch. 11 - In a processing plant, ethylene glycol at 77F is...
Ch. 11 - Water at 15C is flowing downward in a vertical...Ch. 11 - Turpentine at 77F is flowing from A to B in a 3...Ch. 11 - ]11.13 A device designed to allow cleaning of...Ch. 11 - Kerosene at 25C is flowing in the system shown in...Ch. 11 - Water at 40C is flowing from A to B through the...Ch. 11 - Oil with a specific gravity of 0.93 and a dynamic...Ch. 11 - Determine the required size of new Schedule 80...Ch. 11 - What size of standard hydraulic copper tube from...Ch. 11 - Water at 60F is to flow by gravity between two...Ch. 11 - The tank shown in Fig. 11.24 is to be drained to a...Ch. 11 - Figure 11.25 depicts gasoline flowing from a...Ch. 11 - For the system in Fig. 11.26, compute the pressure...Ch. 11 - For the system in Fig. 11.26, compute the total...Ch. 11 - For the system in Fig. 11.26 specify the size of...Ch. 11 - A manufacturer of spray nozzles specifies that the...Ch. 11 - Specify the size of new Schedule 40 steel pipe...Ch. 11 - Refer to Fig. 11.27. Water at 80C is being pumped...Ch. 11 - For the system shown in Fig. 11.27 and analyzed in...Ch. 11 - In a water pollution control project, the polluted...Ch. 11 - Repeat Problem 11.29, but use a 3-in Schedule 40...Ch. 11 - Water at 10C is being delivered to a tank on the...Ch. 11 - If the pressure at point A in Fig. 11.29 is 300...Ch. 11 - Change the design of the system in Fig. 11.29 to...Ch. 11 - It is desired to deliver 250 gal/min of ethyl...Ch. 11 - For the system shown in Fig. 11.30, compute the...Ch. 11 - Repeat Problem 11.35, but consider the valve to be...Ch. 11 - Repeat Problem 11.35, but consider the valve to be...Ch. 11 - Figure 11.31 depicts a DN 100 Schedule 40 steel...Ch. 11 - Repeat Problem 11.38 but replace the globe valve...Ch. 11 - Repeat Problem 11.38 but use a DN 125 Schedule 40...Ch. 11 - Repeat Problem 11.38, but replace the globe valve...Ch. 11 - It is desired to drive a small,...Ch. 11 - Figure 11.32 shows a pipe delivering water to the...Ch. 11 - Repeat Problem 11.43, except consider that there...Ch. 11 - A sump pump in a commercial building sits in a...Ch. 11 - For the system designed in Problem 11.45, compute...Ch. 11 - Figure 11.33 shows a part of a chemical processing...Ch. 11 - For the system described in Problem 11.47, and...Ch. 11 - For the system described in Problem 11.47, and...Ch. 11 - For the system described in Problem 11.47, and...Ch. 11 - Analyze the system shown in Fig. 11.11 with...Ch. 11 - Create a program or a spreadsheet for analyzing...Ch. 11 - Create a program or a spreadsheet for determining...
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