Mindtap For Erjavec/thompson's Automotive Technology: A Systems Approach, 4 Terms Printed Access Card (mindtap Course List)
7th Edition
ISBN: 9781337794381
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Chapter 38, Problem 8ASRQ
To determine
The technician with correct approach.
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4. An operating parameter often used by power plant engineers is the heat rate. The heat rate is
defined as,
HR
Qbioler
Wnet
where Qbioler is the heat transfer rate (Btu/h) to the water in the boiler due to the combustion of a
fuel and Wnet is the net power (kW) delivered by the plant. In comparison, the thermal efficiency
of the power plant is defined as,
nth
Wnet
Qbioler
where the numerator and denominator have the same units. Consider a power plant that is
delivering 1000 MW of power while utilizing a heat transfer rate of 3570 MW at the boiler.
Determine the heat rate and thermal efficiency of this power plant.
3. A steam power plant has an average monthly net power delivery of 740 MW over the course of
a year. This power delivery is accomplished by burning coal in the boiler. The coal has a heating
value of 9150 Btu/lbm. The cost of the coal is $14.20/ton. The overall thermal efficiency of the
plant is,
nth
Wnet
Qboiler
0.26 = 26%
Determine the annual cost of the coal required to deliver the given average monthly power.
The shaft shown in the sketch is subjected to tensile
torsional and bending loads Determine the principal
stresses at the location of stress concentration
✓
D=45MR
F=3MM
1000-M
1000N
チ
d=30mm
500N
150 мм
MM-
120 MA-
Chapter 38 Solutions
Mindtap For Erjavec/thompson's Automotive Technology: A Systems Approach, 4 Terms Printed Access Card (mindtap Course List)
Ch. 38 - What determines whether a conventional...Ch. 38 - Define the purpose of the final drive gears.Ch. 38 - The number of gear teeth per unit of measurement...Ch. 38 - What does a shift blocking system do, and how does...Ch. 38 - Explain the role of shift rails and shift forks in...Ch. 38 - True or False? A reverse idler gear changes the...Ch. 38 - True or False? A set of gears can be configured or...Ch. 38 - True or False? In most transmissions and...Ch. 38 - True or False? The cone on a synchronizers...Ch. 38 - Which of the following gear ratios indicates an...
Ch. 38 - Which type of gear develops gear whine at high...Ch. 38 - When an idler gear is placed between the driving...Ch. 38 - The component used to ensure that the mainshaft...Ch. 38 - In a transaxle, the pinion gear on the pinion...Ch. 38 - Which of the following gear ratios provides the...Ch. 38 - Technician A says that most transaxles have a...Ch. 38 - While discussing the various types of...Ch. 38 - Technician A says that the countergear or cluster...Ch. 38 - Technician A says that reverse lamp switches are...Ch. 38 - Technician A says that if a single idler gear is...Ch. 38 - Technician A says that in a conventional...Ch. 38 - While discussing the power flow through a...Ch. 38 - Prob. 8ASRQCh. 38 - Prob. 9ASRQCh. 38 - While discussing shift mechanisms: Technician A...
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