EBK NUMERICAL METHODS FOR ENGINEERS
7th Edition
ISBN: 9780100254145
Author: Chapra
Publisher: YUZU
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Chapter 12, Problem 4P
Chemical/Bio Engineering
Recompute the concentrations for the five reactors shown in Fig. 12.3, if the flows are changed to
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Perform an analysis of variance and test the hypothesis, at the…
As an environmental engineer working for a consulting company you were asked to evaluate an
existing water treatment plant for possible upgrade. One of the treatment unit processes you
evaluated was the rapid mix tank. You had the following information.
2.
Current average water flow rate 15 x 10' m'/d.
Projected flow rate in 20 years 24 x 10' m'/d.
Temperature of water varies from 12 to 20° C.
No. of rapid mix tank = 1
Dimension of tank: water depth 2.1 m, width 2.1 m, length 2.1 m
Tank is not baffled:
Mixer is 4-bladed turbine with 45° pitched blade (N, = 1.27)
Diameter of impeller 0.9 m
Label on the motor:
horsepower of motor 10 hp (1 hp 746 watts)
rpm of blades = 120 rpm (assume a motor efficiency of 80%)
Evaluate whether the rapid mix system
(1) Is sufficiently designed for current use? If not, provide some remedies.
(i) Will the current system be sufficient for the projected flow rate in 20 years?
If not, what are some of your suggestions or additions to meet the projected flow?
The force acting on a fluid
flow through a bend can be
calculated by_.
O Force=mass x velocity
difference
Force=mass flow rate x
pressure difference
O Force=Discharge x
velocity difference
O Force=mass flow rate x
velocity difference
Chapter 12 Solutions
EBK NUMERICAL METHODS FOR ENGINEERS
Ch. 12 - Chemical/Bio Engineering
12.1 Perform the same...Ch. 12 - Chemical/Bio Engineering If the input to reactor 3...Ch. 12 - Chemical/Bio Engineering Because the system shown...Ch. 12 - Chemical/Bio Engineering
12.4 Recompute the...Ch. 12 - Chemical/Bio Engineering Solve the same system as...Ch. 12 - Chemical/Bio Engineering
12.6 Figure P12.6 shows...Ch. 12 - Chemical/Bio Engineering
12.7 Employing the same...Ch. 12 - Chemical/Bio Engineering The Lower Colorado River...Ch. 12 - Chemical/Bio Engineering A stage extraction...Ch. 12 - Chemical/Bio Engineering
12.10 An irreversible,...
Ch. 12 - Chemical/Bio Engineering
12.11 A peristaltic pump...Ch. 12 - Chemical/Bio Engineering
12.12 Figure P12.12...Ch. 12 - Civil/Environmental Engineering A civil engineer...Ch. 12 - Civil/Environmental Engineering Perform the same...Ch. 12 - Civil/Environmental Engineering
12.15 Perform the...Ch. 12 - Civil/Environmental Engineering Calculate the...Ch. 12 - Civil/Environmental Engineering In the example for...Ch. 12 - Civil/Environmental Engineering Employing the same...Ch. 12 - Civil/Environmental Engineering Solve for the...Ch. 12 - Prob. 20PCh. 12 - Prob. 21PCh. 12 - Civil/Environmental Engineering
12.22 A truss is...Ch. 12 - Electrical Engineering
12.23 Perform the same...Ch. 12 - Electrical Engineering Perform the same...Ch. 12 - Electrical Engineering
12.25 Solve the circuit in...Ch. 12 - Electrical Engineering
12.26 An electrical...Ch. 12 - Electrical Engineering
12.27 Determine the...Ch. 12 - Electrical Engineering Determine the currents for...Ch. 12 - Electrical Engineering The following system of...Ch. 12 - Electrical Engineering
12.30 The following system...Ch. 12 - Mechanical/Aerospace Engineering Perform the same...Ch. 12 - Mechanical/Aerospace Engineering
12.32 Perform the...Ch. 12 - Mechanical/Aerospace Engineering
12.33 Idealized...Ch. 12 - Mechanical/Aerospace Engineering Three blocks are...Ch. 12 - Mechanical/Aerospace Engineering Perform a...Ch. 12 - Mechanical/Aerospace Engineering Perform the same...Ch. 12 - Mechanical/Aerospace Engineering
12.37 Consider...Ch. 12 - Mechanical/Aerospace Engineering The steady-state...Ch. 12 - Mechanical/Aerospace Engineering
12.40 A rod on a...
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