OPERATING SCENARIO
Laboratory pressure and odor control
Indoor environment + central exhaust · Laboratories
- Reference airflow
- Calculated from room ventilation and pressure gradients
- Characteristics
- Intermittent solvent, aldehyde and nitrogen odors or bioaerosols require coordinated personnel and environmental protection.
- Existing issues
- Room purification cannot replace local exhaust. Increasing exhaust alone may disrupt pressure direction or move odors outside.
- Engineering challenges
- Separate indoor purification, unoccupied disinfection, access interlocks, room pressure and central exhaust into distinct operating modes.
- Treatment route
- Local exhaust and negative room pressure → Central outdoor treatment; operate indoor purification or disinfection in unoccupied modes under defined procedures
- Engineering notes
- Set separate operating boundaries for occupied spaces, unoccupied disinfection and central exhaust. Confirm the treatment route against contaminants and biosafety requirements.