Apparent Air Velocity (\( Vapp \)):

\[ Vapp = \frac{AF}{Af} \]

Where:

• \( Vapp \) is the apparent air velocity, in meters per minute (m/min).
• \( AF \) is the total airflow, in cubic meters per minute (m³/min).
• \( Af \) is the dryer floor area, in square meters (m²).