Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Chapter 7, Problem 14MC
Proper disposal of oil filters includes.
- recycling used filters
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Air at T₁-24°C, p₁-1 bar, 50% relative humidity enters an insulated chamber operating at steady state with a mass flow rate of 3
kg/min and mixes with a saturated moist air stream entering at T₂-7°C, p2-1 bar. A single mixed stream exits at T3-17°C, p3-1 bar.
Neglect kinetic and potential energy effects
Step 1
Your answer is correct.
Determine mass flow rate of the moist air entering at state 2, in kg/min.
m2 = 2.1
Hint
kg/min
Using multiple attempts will impact your score.
5% score reduction after attempt 2
Step 2
Determine the relative humidity of the exiting stream.
Փ3 =
i
%
Attempts: 1 of 3 used
A reservoir at 300 ft elevation has a 6-in.-diameter discharge pipe located 50 ft below the surface. The pipe is 600 ft long and drops in elevation to 150 ft where the flow discharges to the atmosphere. The pipe is made of riveted steel with a roughness height of 0.005 ft.
Determine the flow rate without a head loss
Determine the flow rate with the pipe friction head loss.
(hints: Since the velocity is not known for part b and the Reynolds number and friction factor depend on velocity, you will need to iterate to find the solution. A good first guess is the velocity from part (a))
Air at T₁-24°C, p₁-1 bar, 50% relative humidity enters an insulated chamber operating at steady state with a mass flow rate of 3
kg/min and mixes with a saturated moist air stream entering at T₂-7°C, p2-1 bar. A single mixed stream exits at T3-17°C, p3-1 bar.
Neglect kinetic and potential energy effects
Step 1
Your answer is correct.
Determine mass flow rate of the moist air entering at state 2, in kg/min.
m2 = 2.1
Hint
kg/min
Using multiple attempts will impact your score.
5% score reduction after attempt 2
Step 2
Determine the relative humidity of the exiting stream.
Փ3 =
i
%
Attempts: 1 of 3 used
Chapter 7 Solutions
Automotive Technology
Ch. 7 - What is the correct way to dispose of used oil...Ch. 7 - Where in the shop should a list of emergency...Ch. 7 - Describe the correct process for lifting a heavy...Ch. 7 - What are bloodborne pathogens and why should...Ch. 7 - List at least five things you should remember when...Ch. 7 - List at least five precautions that must be...Ch. 7 - Describe the correct procedure for connecting and...Ch. 7 - Where can complete EPA lists of hazardous wastes...Ch. 7 - There are many ways to clean parts while they are...Ch. 7 - List at least five precautions that must be...
Ch. 7 - What is the correct procedure for using a fire...Ch. 7 - Which of the following offer(s) the least...Ch. 7 - Which of the following statements about latex and...Ch. 7 - Which of the following statements about safety...Ch. 7 - Gasoline is highly volatile highly flammable...Ch. 7 - Technician A says that it is recommended that you...Ch. 7 - Technician A says that used engine coolant should...Ch. 7 - Federal Right-To-Know Laws concern. auto emission...Ch. 7 - Which of the following is/are important when work...Ch. 7 - Technician A says that the volatility of a...Ch. 7 - Which of the following is not recommended for use...Ch. 7 - Technician A ties his long hair behind his head...Ch. 7 - Technician A uses compressed air to blow dirt from...Ch. 7 - Heavy protective gloves should be worn when....Ch. 7 - Proper disposal of oil filters includes. recycling...
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