4: Performance Features and Safety Precautions
26
Directional Airflow
Directional airflow also plays a key role in cabinet performance. Air is drawn into
the front of the cabinet at the front grille. This “curtain” of air makes it more difficult
for aerosols to escape out of the work area of the cabinet and into the outside
environment. This airflow is often calculated and referred to as the Inflow Volume
or Average Inflow Velocity. This is illustrated in Figure 4-3.