Air control is one of the most important components of a cleanroom.
Having optimally positioned and properly functioning air returns within your space ensures cleanliness, protects critical processes or products, and helps to meet regulatory standards.
Laminar airflow is the gold standard in cleanroom design
These air returns maintain airflow patterns, control cleanroom pressure, and remove contaminated air—all essential for the integrity and functionality of the space.
There are several key aspects that must be considered when positioning air returns: From laminar airflow to quantity and location of air return units to cleaning and compliance, these aspects are important for the integrity of the cleanroom and its effectiveness.
Airflow in cleanrooms
Laminar airflow is the gold standard in cleanroom design. This refers to a controlled, unidirectional airflow in which air moves in parallel streams with minimal turbulence, ensuring that contaminants are swept away from critical areas.
Air returns should be placed far enough away from the cold air supply to prevent short-circuiting the airflow
Achieving this airflow pattern depends on the placement of air returns and filters within the cleanroom. HEPA or ULPA air filters, typically mounted on the ceiling, introduce clean air into the space.
This air then moves in one direction toward the air returns, which capture and expel the contaminated air. The smoother this flow, the cleaner the room will be.
Not yet a Subscriber?
This is a small extract of the full article which is available ONLY to premium content subscribers. Click below to get premium content on Cleanroom Technology.
Subscribe now Already a subscriber? Sign in here.