Hospital Central Fresh Air Handling Unit HVAC System with Coil Ahu

In a pharmaceutical clean room, the HVAC system typically includes:

1. Air Filtration: The system uses multiple stages of HEPA (High-Efficiency Particulate Air) filters and sometimes ULPA (Ultra-Low Penetration Air) filters that can remove particles as small as 0.3 microns or even smaller, ensuring that the air inside the clean room remains virtually particle-free.

2. Air Pressurization Control: Clean rooms are maintained at positive pressure relative to surrounding areas to prevent unfiltered air from entering. Pressure differentials are closely monitored and controlled.

3. Temperature and Humidity Control: Precise control of temperature and humidity levels are essential as they can affect both the manufacturing process and the stability of pharmaceutical products.

4. Air Changes per Hour (ACH): A high number of air changes per hour (usually ranging from 50 to over 200) ensures that airborne contaminants are rapidly flushed out of the room.

5. Air Distribution: Laminar or turbulent airflow patterns are designed to minimize turbulence and reduce the risk of particle migration.

6. Air Recirculation: The HVAC system continuously circulates and re-filters the air within the clean room to maintain the required cleanliness level.

7. Bypass Systems: Some HVAC systems may include a bypass mode for when the clean room is not in use, which saves energy without compromising the sterility of the space.

8. Validation and Monitoring: The entire HVAC system must be validated and continuously monitored to ensure it's functioning within predefined parameters.

9. Separate Supply and Exhaust Ducts: To prevent cross-contamination, supply and exhaust ducts are separate and strategically placed.