researcher suggesting up to 75% risk of #Covid19 transmission is through ‘aerosols’ (small particles) both in close proximity ~and throughout the room~, so #ventilation is critically important https://twitter.com/jljcolorado/status/1291422303272620032?s=21 https://twitter.com/jljcolorado/status/1291422303272620032
Mitigating risks in #schools - open windows & have ventilation breaks to purge air from rooms (this has implications for heating, energy use & costs) https://twitter.com/orla_hegarty/status/1289125320940032001?s=21 https://twitter.com/orla_hegarty/status/1289125320940032001
additional technical guidance on ventilation systems & #Covid19 (likely college & university buildings, rather than schools) https://www.cibse.org/coronavirus-covid-19/emerging-from-lockdown
further research links on children & #Covid19 transmission https://twitter.com/johnwenger9/status/1291252816858812417?s=21 https://twitter.com/johnwenger9/status/1291252816858812417
I asked @NjbBari3 about plan for 1m desk spacing (2m for teacher) & no mask requirements in Irish schools https://twitter.com/njbbari3/status/1291073473796665345?s=21 https://twitter.com/njbbari3/status/1291073473796665345
Many mechanical ventilation & air conditioning systems are set to recirculate air for energy savings (because fresh air has to be heated), systems can be re-set for higher % of fresh air to ensure virus isn’t spread around buildings https://twitter.com/devisridhar/status/1291109502352326656?s=21 https://twitter.com/devisridhar/status/1291109502352326656
‘Transmission of #Covid19 through the air ~is sufficiently likely~ that airborne exposure to the virus should be controlled’ #ventilation

more technical information from @ashraenews @ASHRAE_IRL
https://www.ashrae.org/technical-resources/resources
HVAC (heating, ventilation & air conditioning) guidance for schools & universities https://www.ashrae.org/about/news/2020/ashrae-introduces-updated-reopening-guide-for-schools-and-universities
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