Duct Sizing

What is the primary purpose of duct sizing in HVAC systems?

• To ensure proper air flow and distribution

• To reduce the cost of materials

• To increase the noise levels

• To decrease the efficiency of the system

Tags

NGSS.MS-PS3-3

Which of the following factors is most important when determining duct size?

• Color of the duct

• Material of the duct

• Air flow rate

• Length of the duct

What is the unit of measurement commonly used for duct size?

• Meters

• Square meters

• Cubic meters per second

• Inches

In duct sizing, what does the term 'friction loss' refer to?

• Loss of air due to leaks

• Loss of air speed due to bends

• Loss of pressure due to resistance

• Loss of temperature due to insulation

Which equation is used to calculate the air flow rate in duct sizing?

What is the effect of undersized ducts in an HVAC system?

• Increased energy efficiency

• Reduced air flow and increased noise

• Improved air quality

• Decreased system lifespan

Tags

NGSS.MS-PS3-4

Which material is commonly used for ductwork due to its lightweight and corrosion resistance?

• Steel

• Aluminum

• Copper

• Plastic

Tags

NGSS.MS-PS3-3

What is the role of a duct calculator in duct sizing?

• To measure the length of the duct

• To calculate the cost of the duct

• To determine the optimal duct size based on air flow and pressure

• To design the shape of the duct

Tags

NGSS.MS-ETS1-4

How does increasing the diameter of a duct affect air flow?

• Decreases air flow

• Increases air flow

• Has no effect on air flow

• Reverses air flow direction

What is the significance of the Reynolds number in duct sizing?

• It determines the color of the duct

• It indicates the type of flow: laminar or turbulent

• It measures the duct's length

• It calculates the duct's weight

Tags

NGSS.MS-PS2-2