Re: Ventilation

[Gregory Russell <gfr10598 gmail com>]

I hate the use of OMG, but *OMG!*  This is disgraceful.  And I can't
imagine the US is any better.

BTW, here is one option for a CO2 monitor.  Someone could connect their
smartphone during practice.  I'll see if I can discover the color coding
for different elements, and whether we could set it so the color display
only reflects the CO2.

https://www.amazon.com/Airthings-2930-Quality-Detection-Dashboard/dp/B07JB8QWH6/ref=rvi_2/140-1844859-4704932?pd_rd_w=e4R0C&pf_rd_p=c0296674-5a83-4ad6-b035-0702d2b359df&pf_rd_r=J65NJH0N2G75W0D39SXP&pd_rd_r=fd643ca9-c57e-47a6-91d3-041bc6083901&pd_rd_wg=Q3yp0&pd_rd_i=B07JB8QWH6&th=1


On Tue, Dec 14, 2021 at 3:28 PM Ed Futcher via Boston-change-ringers <
boston-change-ringers cosmos phy tufts edu> wrote:

>  The absolute value may indicate that, but what we looked at in Raleigh
> was the decay from a high value to a low value to see how frequently the
> air in the room was being exchanged. For COVID purposes we use CO2 as a
> proxy for airborne Covid carrying particles.
>
>     On Tuesday, December 14, 2021, 03:20:06 PM EST, Rachel Fetters via
> Boston-change-ringers <boston-change-ringers cosmos phy tufts edu>
> wrote:
>
>  Is this why in some classrooms I felt inexplicably sleepy?  I wonder how
> hard it is to get a CO2 measurement. One of my kids mentioned being very
> tired in certain classes, too.
> Rachel
>
> -----Original Message-----
> From: Emily Russell <linninniach gmail com>
> To: Laura Dickerson <lauradi rcn com>
> Cc: Boston Change Ringers <boston-change-ringers cosmos phy tufts edu>
> Sent: Tue, Dec 14, 2021 3:03 pm
> Subject: Re: Ventilation
>
> I was curious what they mean by "well" or "poorly" ventilated, so 
> clicking
> through to the study...
>
> "In 60 percent of the classrooms, CO2 levels exceeded 2000 parts per
> million (ppm). Elevated CO2 concentrations can impair cognitive 
> performance
> and thus learning ability."
>
> "In high-risk schools, it often exceeded 3,000 parts per million (ppm) – 
> a
> level significantly higher than the recommended level of no more than 
> 1,000
> ppm."
>
> Emily
>
>
>
> On Mon, Dec 13, 2021 at 9:30 AM <lauradi rcn com> wrote:
>
> > A Boston ringing room isn't necessarily the same as a Swiss classroom,
> and
> > I know we're on Team Ventilation already, but I thought this was
> > interesting.
> >
> > [
> >
> https://www.swissinfo.ch/eng/society/study-shows-benefit-of-regular-classroom-ventilation/47179498
> > |
> >
> https://www.swissinfo.ch/eng/society/study-shows-benefit-of-regular-classroom-ventilation/47179498
> > ]
> >
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