Clean Air For Class

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Clean Air For Class

Clean Air For Class

@CA4Class

A campaign group urging the Scot Gov to place CO2 monitors and HEPA air purifiers in every classroom and count classmates as close contacts. Sign the petition!

Scotland Bergabung Eylül 2021
194 Mengikuti154 Pengikut
Clean Air For Class
Clean Air For Class@CA4Class·
We’ve been quiet for too long. It’s vital now more than ever that classrooms have HEPA purifiers and Co2 monitors in every room. Protecting education is paramount so let’s make it safer. We shouldn’t have to choose between education and health.
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Alex Huffman, Ph.D.
Alex Huffman, Ph.D.@HuffmanLabDU·
19/ Or search many more resources (using 'Cntrl-F') for "CO2" on the (1) Reports, Guides, Tools; (2) Media; or (5) Threads tabs here: bit.ly/3fzmB16
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Alex Huffman, Ph.D.
Alex Huffman, Ph.D.@HuffmanLabDU·
18/ Lots of other 🧵s to learn more about CO2 & ventilation, e.g. here by @CathNoakes, @Poppendieck, @CorsIAQ: twitter.com/CathNoakes/sta… twitter.com/CathNoakes/sta… twitter.com/CathNoakes/sta… twitter.com/Poppendieck/st… twitter.com/Poppendieck/st… twitter.com/HuffmanLabDU/s…
Alex Huffman, Ph.D.@HuffmanLabDU

@Sisu56693590 Lots of resources to read up on CO2 sensing. Short video overview: news.yahoo.com/co-2-monitors-… Article: washingtonpost.com/health/2021/02… Simulations: english.elpais.com/usa/2021-03-29… Re-breathed fraction: twitter.com/CorsIAQ/status… Handy graphic: twitter.com/RichardBarrow/…

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Alex Huffman, Ph.D.
Alex Huffman, Ph.D.@HuffmanLabDU·
16/One way to think about indoor CO2 concentrations is to consider the "rebreathed fraction". For every ~400 ppm above the baseline (usually also ~400 ppm), 1% of your air is '#rebreathed' from someone else's exhaled air. E.g. via @CorsIAQ: twitter.com/CorsIAQ/status…
Richard Corsi, PhD, PE (Texas)@CorsIAQ

2/ RF can be calculated as RF = (CO2in - CO2out)/CO2breath Here CO2in is CO2 concentration in the indoor space, CO2out is the outdoor CO2 concentration, and CO2breath is the typical CO2 concentration on human breath (around 36,000 to 38,000 ppm) w/ some variation by diet, etc.

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Alex Huffman, Ph.D.
Alex Huffman, Ph.D.@HuffmanLabDU·
11/ But #CO2 monitors are not just for school. I've loaned mine out to friends who have had fun seeing the invisible trends in various places they go. Here is one set of anecdotes on how I played around with CO2 sensors in school, at work, and at home: twitter.com/HuffmanLabDU/s…
Alex Huffman, Ph.D.@HuffmanLabDU

1/ A 🧵 on some #CO2 measurements in my home, car, school *AND* details/instruction on how to use dry ice for DIY estimate of #ventilation rates at your home or as a school project. Highlights in thread & gathered together in the linked doc 👇. #COVIDCO2 docs.google.com/presentation/d…

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Alex Huffman, Ph.D.
Alex Huffman, Ph.D.@HuffmanLabDU·
10/ Once you've collected your data, make sure to share using the hashtag #COVIDCO2 and peruse for further ideas & support (Thx @mdc_martinus!). Some have also used #SchoolCO2. twitter.com/mdc_martinus/s…
Maarten De Cock@mdc_martinus

Great to see #covidCO2 mentioned in The New York Times! It began as an idea, 14 months ago, and it is slowly growing into an international movement of "guerilla air-monitoring". We better keep doing it if we want to incite governments to do something about #SafeIndoorAir!

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Alex Huffman, Ph.D.
Alex Huffman, Ph.D.@HuffmanLabDU·
9/ There are lots of creative ways that people have been using as they send CO2 monitors: twitter.com/HuffmanLabDU/s…
Alex Huffman, Ph.D.@HuffmanLabDU

Sending a #CO2 monitor with a kid to school is one way to get a rough idea of the ventilation quality. Curious to hear your simple or sneaky strategies of how you've sent a #COVIDCO2 monitor. (DIY innovations aren't just for people making a #CorsiRosenthalBox for filtration. 😉)

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Alex Huffman, Ph.D.
Alex Huffman, Ph.D.@HuffmanLabDU·
8/ I've been encouraging parents who want to send a CO2 sensor with a child to make sure they don't push a child past their comfort zone. Make sure the sensor won't be a distraction during the day. And it's important that the parent, not the student, bear the responsibility.
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Alex Huffman, Ph.D.
Alex Huffman, Ph.D.@HuffmanLabDU·
7/ As @EmilyAnthes points out in the NY Times article above, many parents have seen backlash against sending CO2 monitors. Some of those brief parent stories are here: twitter.com/kprather88/sta… twitter.com/HuffmanLabDU/s…
Alex Huffman, Ph.D.@HuffmanLabDU

An opportunity for an important, interesting story for some national & local journalists. It won't be hard to ask around Twitter for parents who have been blocked from sending CO2 monitors after their kids recorded unhealthy CO2 (meaning poor ventilation) 👇. #COVIDCO2 #SchoolCO2

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Alex Huffman, Ph.D.
Alex Huffman, Ph.D.@HuffmanLabDU·
6/ Gathering CO2 data is often discouraged, however: “It’s possible that the school district may not be all that happy with this because I think it gives us a window into the fact that they may not actually be treating ventilation as seriously as they should be,” Dr. Huffman said
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Jelajahi

@trishgreenhalgh @kprather88 @JimRosenthal4 @CleanAirCrewOrg @TravellingTabby @TigressEllie @scotgov @NicolaSturgeon