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# Rectangular Air Ducts - Velocity Diagram

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Air flow and air velocities in rectangular air ducts:

### Example - Air Flow in Rectangular Air Duct

The air flow in a 200 x 250 mm rectangular air duct with air velocity 6 m/s can be estimated to aprox. 0.3 m3/s from the diagram above.

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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 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 - Minor Loss Coefficient Diagrams

Minor loss coefficient diagrams for air ductwork, bends, expansions, inlets and outletsĀ  - SI units.

### Air Ducts - Velocity Diagram

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

### Circular Ducts - Dimensions

Standard size of circular ventilation air ducts.

### Equivalent Diameter - Rectangular vs. Circular HVAC Ducts

Rectangular equivalent diameter for air flows between 100 - 50000 cfm.

### Rectangular Ducts - Dimensions

Commonly used metric dimensions for rectangular air ducts in ventilation systems.

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