Applied Fluid Mechanics (7th Edition)
7th Edition
ISBN: 9780132558921
Author: Robert L. Mott, Joseph A. Untener
Publisher: PEARSON
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Chapter 18, Problem 18.24PP
To determine
Flow rate of air in a pipe with pressure 65 psig and temperature 95oF..
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6. A Compressor of a compressed air system displaces air at 25 cubic meters per minute when the
intake pressure is 101.4 kPa. Compute the time required to pump up a 9 cubic meter receiver
from 550 kPa to 828 kPa if the average volumetric efficiency of the compressor is 70%
Find the loss in total pressure for each run in the simple duct system of Fig. 1, using the
equal-friction method and in English unit. The total pressure available for the duct system
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150 cfm
e.
a
15 ft
Plenum
е
15 ft
5 ft
5 ft
a
3.
20 ft
4
10 ft
200 cfm
e
10 ft
150 cfm
b
Duct Fittings for Figure 1
Fittings Type
Abrupt Entrance
90 deg Elbow, Pleated
Round to Rectangular boot, Straight
45 deg. Converging Wye
45 deg Elbow, Pleated
a
d
e
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.
Chapter 18 Solutions
Applied Fluid Mechanics (7th Edition)
Ch. 18 - A pipe in a compressed air system is carrying 2650...Ch. 18 - Prob. 18.2PPCh. 18 - Prob. 18.3PPCh. 18 - A duct in a heating system carries 8320 cfm....Ch. 18 - The velocity of flow in a ventilation duct is 1140...Ch. 18 - Prob. 18.6PPCh. 18 - Prob. 18.7PPCh. 18 - Prob. 18.8PPCh. 18 - Prob. 18.9PPCh. 18 - Prob. 18.10PP
Ch. 18 - Prob. 18.11PPCh. 18 - Describe a centrifugal fan with forward-curved...Ch. 18 - Prob. 18.13PPCh. 18 - Prob. 18.14PPCh. 18 - Name four types of positive-displacement...Ch. 18 - Name a type of compressor often used for pneumatic...Ch. 18 - Prob. 18.17PPCh. 18 - Prob. 18.18PPCh. 18 - Prob. 18.19PPCh. 18 - Compute the specific weight of nitrogen at 32...Ch. 18 - Compute the specific weight of air at 1260...Ch. 18 - Prob. 18.22PPCh. 18 - An air compressor delivers 820 cfm of free air....Ch. 18 - Prob. 18.24PPCh. 18 - Prob. 18.25PPCh. 18 - Prob. 18.26PPCh. 18 - Specify a size of Schedule 40 steel pipe suitable...Ch. 18 - For an aeration process, a sewage treatment plant...Ch. 18 - Prob. 18.29PPCh. 18 - Prob. 18.30PPCh. 18 - Prob. 18.31PPCh. 18 - Prob. 18.32PPCh. 18 - Prob. 18.33PPCh. 18 - Prob. 18.34PPCh. 18 - Prob. 18.35PPCh. 18 - Figure 18.14 iD shows a two-compartment vessel....Ch. 18 - Prob. 18.37PPCh. 18 - Prob. 18.38PPCh. 18 - Prob. 18.39PPCh. 18 - A tank of Refrigerant is at 150 kPa gage and 20C....Ch. 18 - Prob. 18.41PP
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- A pump is used in a building to lift water from a ground floor. The pump is pushing 60l/sec of water through a 0.1m diameter to above floor which is 5m high. Calculate the velocity by which the water exits the pipe if water enters the pump at 30kPa and exists with 5kPa.arrow_forwardWhen 500 gpm flow through a 12 inches pipe which later reduces to a 6 inches pipe, calculate the average velocities in the two pipes.arrow_forwardAnswer pleasearrow_forward
- The lengths of two pipes with the same friction factor, "f," are parallel. What must the flow ratio be if the first pipe has twice the diameter of the second?arrow_forwardProblem 3arrow_forwardThe initial condition of air in an air compressor is 138 kPa and 41 deg. C and discharges at 447 kPa. The bore and stroke are 368 mm and 423 mm, respectively. The percent clearance of 10 % running at 366 rpm. Find the volumetric efficiency. Do not multiply the final answer by 100. Simply input the answer using 2 decimal places (Example answer is 0.71)arrow_forward
- Calculate the air power of a fan that delivers 1200 m3/min of air through a 1 m by 1.5 m outlet. Static pressure is 120 mm WG and density of air is 1.18.arrow_forward3. Find the rate of flow of water, in 1/s, through a 220 mm-diameter pipe which has a venturi meter with a throat diameter of 140 mm. Take the coefficient of delivery as 0,97. The mercury manometer shows a reading of 900 mm.arrow_forwardA venturimeter is attached to pipe of 80 mm diameter has throat of 40 mm diameter. It is found that pressure in the pipe and at throat is 400 kPa and 130 kPa respectively Find velocity of the flow in the pipe.arrow_forward
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