38/
Almost six months later.
Why can't we do this here?
Almost six months later.
Why can't we do this here?
https://twitter.com/ReicherStephen/status/1380414292151967744?s=20
/39 adding this great thread from @marwa_zaatari:
https://twitter.com/marwa_zaatari/status/1383828012022439937?s=19
/40 summary additional benefits of higher #ventilation and improved air quality in schools beyond airborne infectious disease transmission, from The Lancet COVID-19 commission, April 2021.
Link to document (PDF): static1.squarespace.com/static/5ef3652…
Link to document (PDF): static1.squarespace.com/static/5ef3652…
/41 Large or small, just do it.
Homewood IL District 153 (three schools) hiring engineers "to determine deficiencies of existing #ventilation systems, incl. lack of outdoor air, filtration, through visual inspection"
Should be measured. hfchronicle.com/article/2021/m…
Homewood IL District 153 (three schools) hiring engineers "to determine deficiencies of existing #ventilation systems, incl. lack of outdoor air, filtration, through visual inspection"
Should be measured. hfchronicle.com/article/2021/m…
/42 Back to Ontario, Waterloo RDSB is racing to complete #ventilation projects before end-of-year funding deadline. Capital intensive changes take a long time compared to adding some portable HEPA filters. Bravo @wrdsb for taking the long view! kitchener.ctvnews.ca/wrdsb-racing-t…
/43 @Fix_Our_Schools seeks crowd-sourced data for Ontario schools, 11 months after their initial survey of #ventilation in #schools. How was the money spent?
https://twitter.com/Fix_Our_Schools/status/1395121478056693764?s=20
/44 Higher education is less encumbered by funding restrictions, and can unilaterally take action, like U of T is doing
https://twitter.com/DavidElfstrom/status/1387910396632256512?s=19
/45 All classrooms in NYC to have TWO air purifiers next year. Why two?
My thoughts:
1. One on full speed is loud, two on half speed is quieter.
2. Have ability to increase flow when needed
3. Better air mixing/performance ny.chalkbeat.org/2021/6/23/2254…
My thoughts:
1. One on full speed is loud, two on half speed is quieter.
2. Have ability to increase flow when needed
3. Better air mixing/performance ny.chalkbeat.org/2021/6/23/2254…
/46 Also in NYC schools for fall 2021, any space not meeting strict requirements for ventilation will be shut down until repaired. This requires measurement, so CO2 meters will be distributed to school custodians.
/47 "It shouldn't be luck for students to end up in a new portable with a dedicated ventilation system versus an old classroom w/o any mechanical ventilation. That's not equitable." -me, based on a local school @GEDSB cbc.ca/news/canada/to…
/48 The indoor air quality experienced by a student and their educator shouldn't be randomly assigned when it directly impacts academic performance and health.
Every educational setting needs to be brought up to a minimum acceptable level. Costs $ but has $$$ benefits.
Every educational setting needs to be brought up to a minimum acceptable level. Costs $ but has $$$ benefits.
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![States high levels of CO2 and other contaminants ... can contribute to [list of five health effects, such as headaches, fatigue, difficultly concentrating], says CO2 should be below 1000 ppm, then says (incorrectly) that health effects from CO2 occur at levels above 5000 ppm. No, those effects can occur below 5000 ppm. It also states the CO2 concentrations do not indicate a risk of infectious disease transmission in a space. No, ASHRAE's position statement on CO2 states that elevated CO2 concentrations CAN reflect higher risk. Obviously, because it indicates poor ventilation, which IS an i...](https://pbs.twimg.com/media/GO6z_36WQAI7_mj.jpg)
