AUTOMOTIVE TECHNOLOGY (W/MINDTAP)
7th Edition
ISBN: 9780357096772
Author: ERJAVEC
Publisher: CENGAGE L
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Textbook Question
Chapter 46, Problem 7MC
SLA systems in common use today are used in the ____ .
a. coil spring suspension
b. torsion bar suspension
c. strut and control arm suspension
d. all of the above
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Students have asked these similar questions
A counter flow double pipe heat exchanger is being used to cool hot oil from 320°F to 285°F
using cold water. The water, which flows through the inner tube, enters the heat exchanger at 70°F
and leaves at 175°F. The inner tube is ¾-std type L copper. The overall heat transfer coefficient
based on the outside diameter of the inner tube is 140 Btu/hr-ft2-°F. Design conditions call for a
total heat transfer duty (heat transfer rate between the two fluids) of 20,000 Btu/hr. Determine the
required length of this heat exchanger (ft).
!
Required information
A one-shell-pass and eight-tube-passes heat exchanger is used to heat glycerin (cp=0.60 Btu/lbm.°F) from 80°F to 140°F
by hot water (Cp = 1.0 Btu/lbm-°F) that enters the thin-walled 0.5-in-diameter tubes at 175°F and leaves at 120°F. The total
length of the tubes in the heat exchanger is 400 ft. The convection heat transfer coefficient is 4 Btu/h-ft²°F on the glycerin
(shell) side and 70 Btu/h-ft²°F on the water (tube) side.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
Determine the rate of heat transfer in the heat exchanger before any fouling occurs.
Correction factor F
1.0
10
0.9
0.8
R=4.0 3.0 2.0.15 1.0 0.8.0.6 0.4 0.2
0.7
0.6
R=
T1-T2
12-11
0.5
12-11
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
(a) One-shell pass and 2, 4, 6, etc. (any multiple of 2), tube passes
P=
T₁-11
The rate of heat transfer in the heat exchanger is
Btu/h.
!
Required information
Air at 25°C (cp=1006 J/kg.K) is to be heated to 58°C by hot oil at 80°C (cp = 2150 J/kg.K) in a cross-flow heat exchanger
with air mixed and oil unmixed. The product of heat transfer surface area and the overall heat transfer coefficient is 750
W/K and the mass flow rate of air is twice that of oil.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
Air
Oil
80°C
Determine the effectiveness of the heat exchanger.
Chapter 46 Solutions
AUTOMOTIVE TECHNOLOGY (W/MINDTAP)
Ch. 46 - Prob. 1SACh. 46 - Explain the difference between sprung and unsprung...Ch. 46 - What are two reasons for using an air spring?Ch. 46 - Explain the action of the conventional shock...Ch. 46 - Prob. 5SACh. 46 - Describe the common complaints caused by faulty...Ch. 46 - Prob. 7SACh. 46 - What occurs when a wheel hits a dip or hole and...Ch. 46 - Which of the following is part of the sprung...Ch. 46 - What occurs when a wheel hits a dip or hole and...
Ch. 46 - The modified MacPherson rear strut suspension is...Ch. 46 - What is used to control the movement of a vehicle...Ch. 46 - The coil springs of the vehicle_. a. support the...Ch. 46 - SLA systems in common use today are used in the...Ch. 46 - A multilink front suspension contains which of the...Ch. 46 - Technician A says that the use of firmer, urethane...Ch. 46 - Prob. 2ASRQCh. 46 - Technician A says that a weak suspension spring...Ch. 46 - Technician A says that leaf spring-type rear...Ch. 46 - Technician A says that shock absorbers should be...Ch. 46 - While discussing types of coil springs: Technician...Ch. 46 - When the front wheels are turned on a vehicle...Ch. 46 - Technician A says that the suspension switch must...Ch. 46 - While conducting a bounce test: Technician A says...Ch. 46 - Technician A says that rattling on road...
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