Air Distribution and Ventilation
Review
Made by @jeffflechsing
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17
1: What is the primary purpose of ductwork?
20.0s
Store air
Transfer and distribute air
Filter air
Heat air
2: Which duct shape is most efficient?
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Rectangular
Oval
Round
Square
3: Why are rectangular ducts often used?
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Lower cost
Easier install
Save headroom
Better insulation
4: Most common commercial duct material?
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Aluminum
Fiberglass
Galvanized steel
Fabric
5: Acceptable duct leakage range?
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0%
1-5%
10-15%
20-25%
6: What is a plenum?
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Diffuser
Fitting
Central air chamber
Filter
7: Turning vanes do what?
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Increase speed
Reduce friction
Filter air
Heat air
8: Purpose of duct insulation?
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Aesthetics
Reduce airflow
Prevent condensation
Increase pressure
9: What distinguishes a register?
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Size
Location
Has damper
Has insulation
10: Purpose of a diffuser?
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Filter air
Distribute air evenly
Heat air
Remove contaminants
11: What does IAQ stand for?
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Indoor Air Quantity
Internal Air Quality
Indoor Air Quality
Industrial Air Quality
12: ASHRAE IAQ required satisfaction level?
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100%
90%
80%
50%
13: What increased IAQ awareness?
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WWII
1973 oil embargo
COVID-19
Industrial Revolution
14: Sick Building Syndrome (SBS) occurs at what complaint level?
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5%
10%
20%
50%
15: Which is a gaseous contaminant?
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Dust
Mold
Carbon monoxide
Pollen
16: Air filtration system purpose?
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Heat air
Remove contaminants
Increase pressure
Add humidity
17: HEPA filters remove what %?
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50%
75%
90%
99.97%
18: What does MERV measure?
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Velocity
Filter Effectiveness
Pressure
Noise
19: What is a MAU?
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