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Air Ducts - Sizing

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Air flow, air velocity and required air-duct area:

 

  • 1 ft/min = 5.08x10-3 m/s
  • 1 ft3/min = 1.7 m3/h = 0.47 l/s
  • 1 ft2 = 0.0929 m2 = 144 in2

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Related Topics

• HVAC Systems

Design and sizing of Heating, Ventilation and Air Conditioning systems.

• Ventilation Systems

Design of systems for ventilation and air handling - air change rates, ducts and pressure drops, charts and diagrams and more.

Related Documents

Air Duct Components - Minor Dynamic Loss Coefficients

Minor loss (pressure or head loss) coefficients for air duct components.

Air Duct Velocities

Typical air duct velocities in applications like ventilation systems or compressed air systems.

Air Ducts - Friction Loss Diagram

A major friction loss diagram for air ducts - SI units.

Air Ducts - Friction Loss Diagram

A major friction loss diagram for air ducts - Imperial units ranging 10 - 100 000 cfm.

Air Ducts - Velocity Diagram

Air flow volume, duct size, velocity and dynamic pressure.

Circular Ducts - Dimensions

Standard size of circular ventilation air ducts.

Duct Velocity

Calculate velocities in circular and rectangular ducts - imperial and SI-units - online calculator.

Ducts or Pipes through Steel Joists - Maximum Sizes

Maximum sizes of ducts or pipes through K series joists.

Ducts Sizing - the Velocity Reduction Method

The velocity reduction method can be used when sizing air ducts.

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