company news about The Role of Fresh Air Intake (FAI) in modular cleanrooms

In controlled environments like pharmaceutical manufacturing, semiconductor fabrication, and biotech research, modular cleanrooms demand precision ventilation to maintain air quality, thermal comfort, and energy efficiency.

The core challenge lies in striking an optimal balance between fresh air intake (FAI) and recirculation rates—two interconnected variables that directly impact contamination control, operational costs, and regulatory compliance.

Fresh air serves three critical functions in modular cleanrooms: diluting airborne contaminants, replenishing oxygen for personnel, and offsetting air losses from exhaust systems or pressurization requirements. Regulatory standards such as ISO 14644-1 and GMP guidelines mandate minimum FAI rates to ensure indoor air quality (IAQ) meets safety thresholds. For example, ISO 14644-1 specifies that cleanrooms must supply enough fresh air to limit carbon dioxide (CO₂) levels below 1,000 ppm, typically translating to 20–30 cubic meters per person per hour. However, excessive FAI increases heating, ventilation, and air conditioning (HVAC) energy consumption, as incoming air requires conditioning to match the cleanroom’s strict temperature and humidity parameters.