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 SELF-STUDY PROBLEMS
CHAPTER 5.
A building measures 50 ft by 100 ft and the rooms are 8 ft high.
Q5-1.
What is the air flow quantity that is required to provide 60 air
changes per hour?
667
cfm
a.
20,000
cfm
b.
40,000
cfm
d.
20,000
fpm
A hallway measures 4 ft x 8 ft. If the maximum velocity rate
Q5-2.
is limited to 100 feet per minute, what is the air flow quantity?
3,200
cfm
a.
b.
1,600
cfm
53.3
cfm
c.
800
cfm
d.
A mechanical ventilation cooling fan has a diameter of 3 feet.
Q5-3.
What is the minimum exhaust area required?
3.0
sq.
ft.
b.
9.4
sq.
ft.
7.1
sq.
ft.
d.
6.0
sq.
ft.
List two reasons a shutter might be slamming shut when the fan
Q5-4.
turns off.
a.
b.
5-4
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