- Main route of transmission: droplets/aerosols rki20
- Droplets sink rapidly to the ground
- Aerosols suspended in the air for a long time and dispersed in closed rooms
- German Federal Environmental Agency: shock ventilation in schools every 20 min for at least 3-5 min uba20
- Similar recommendations for meeting rooms dguv20
- Disadvantages:
- Difficult to keep up
- rooms cool down a lot kfh20
- Reduce virus load in indoor air
- Filter aerosols from the air or render viruses harmless
- Mobile filter system (no built-in system)
- Inexpensive to produce
- Easy to operate
- Little disturbing noise
- Complete air filtration at least 3x per hour.
- For different requirements: Classroom, office, tea kitchen, family event, ...
- After respective analysis, help at time20
- Despite air filter, do not underestimate risk of infection.