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# Air Ducts - Velocity Diagram

Velocity and dynamic pressure in air ducts:

#### Example - Air Flow and Velocity

The velocity in a 1000 mm duct with airflow 3000 m3/h is approximately 1.1 m/s according the diagram above.

## Related Topics

### • 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 Calculator

Online calculator to compute friction loss in air ducts.

### 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 - Major Friction Head Loss, Online Calculator

Head loss or major loss in air ducts - equations and online calculator for rectangular and circular ducts - Imperial and SI units.

### Air Ducts - Sizing

Required duct area vs. air flow.

### 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 Sizing - the Velocity Reduction Method

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

### HVAC Ducts - Air Velocities

Recommended air velocities in HVAC ducts.

### Rectangular Air Ducts - Velocity Diagram

Velocity diagram for rectangular air ducts - metric units.

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