Improving indoor #air quality to prevent #COVID-19
▻https://www.usatoday.com/in-depth/graphics/2020/10/18/improving-indoor-air-quality-prevent-covid-19/3566978001
Your chances of being infected depend on the size of the room and the number of people infected with COVID-19 inside.
“When they talk, talk loudly, when they breathe, small respiratory #aerosols are released,” Miller said.
If you’re in a classroom, office or other enclosed space, these aerosols can build up over time.
“It’s like if you’re in a smoky bar,” Miller says. “When it opens, there’s not a lot of smoke, but the more people smoke, it becomes a cloudy room. You can think of virus being released like that.”
Pour y remédier, importance :
– de l’apport d’air extérieur pour diluer les aérosols, d’autant plus efficace que le nombre d’élèves par salle est réduit,
– de la filtration (dans le cas d’air conditionné) ou/et de l’évacuation (à l’aide de ventilateurs dirigés vers les fenêtres ouvertes) de l’air intérieur chargé d’aérosols.
#ventilation, #aération,