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Typical Air Velocities in Ducts and Pipes

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

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Air velocities in ducts and pipes should not exceed certain limits to avoid high pressure loss and unacceptable noise generation. The values below can be used as guidelines for some typical applications.

Air Ducts	Air Velocity
Air Ducts	(m/s)	(ft/min)
Combustion air duct	12 - 20	2400 - 4000
Air inlet to boiler room	1 - 3	200 - 600
Warm air for house heating	0.8 - 1.0	150 - 200
Vacuum cleaning pipe	8 - 15	1500 - 3000
Compressed air pipe	20 - 30	4000 - 6000
Ventilation ducts in hospitals	5 - 8	1000 - 1500
Ventilation ducts in office buildings	7 - 11	1200 - 2000

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Related Topics

Ventilation - Systems for ventilation and air handling - air change rates, ducts and pressure drops, charts and diagrams and more

Related Documents

Air Ducts - Friction Loss Diagram - Major loss diagram for air ducts - SI units
Air Ducts - Friction Loss Diagram - A major loss diagram for air ducts - Imperial units ranging 10 - 100 000 cfm
Air Ducts - Sizing - Air flow and required duct area
Air Ducts - Velocity Diagram - Air flow volume, duct size, velocity and dynamic pressure
Air Ducts Minor Loss Coefficient Diagrams - Minor loss coefficient diagrams for air ductwork, bends, expansions, inlets and outlets - SI units
Air Ducts Sizing - The ductwork of ventilation systems are often sized with either the Velocity, the Constant Pressure Loss (or Equal Friction Loss) - or the Static Pressure Recovery Methods
Duct Velocity - Calculate velocities in circular and rectangular ducts - imperial and SI-units - online calculator
Equal Friction Method - The equal friction method for sizing air ducts is easy and straightforward to use
Friction Loss in Air Ducts - Friction loss or major loss in air ducts - equations and online calculator for rectangular and circular ducts - imperial and SI units
Rectangular Air Ducts - Velocity Diagram - Velocity diagram for rectangular air ducts - metric units

Tag Search

en: air velocity ducts
es: conductos de velocidad del aire
de: Luftgeschwindigkeitskanäle

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