Brutkey

David Elfstrom
@DavidElfstrom@masto.ai
5a3d184dfc3dd210.mp4 Rebreathed CO2 Breath approximately 40,000 ppm Outdoors 400 ppm For every +400 ppm rebreathed fraction +1% 800 ppm = 1%, 1 in 100 breaths 1200 ppm = 2%, 1 in 50 breaths 2400 ppm = 5%, 1 in 20 breaths 5000 ppm = 12%, 1 in 8 breaths 57cc8192019f0b4c.png Small commercial building schematic with labels By @DavidElfstrom Maximize outdoor air damper position and economizer function Higher MERV filter rating, ensure no bypass Properly tension fan belt Exhaust fan functioning Dotted box surrounding: Regular inspection, maintenance, filter changes Windows partially open Upper room UVGI (Ultraviolet Germicidal Irradiation) IAQ monitor with action limits: Temperature, Relative Humidity, Carbon Dioxide, Particulate Matter HEPA or Corsi-Rosenthal box in center of room Respirator on person for source control & PPE Fan control changed from Auto to ON df4a1ab7a152cf17.jpeg