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Is Conference Room Air Making Us Dumber?

nytimes.com

141–150 of 327 posts

Re: Is Conference Room Air Making Us Dumber?

#141
post #131

Earlier quoted context omitted.

> I know you shouldn't try to take off a helmet in case of an accident, At least here in Germany this advice is considered outdated and people in (mandatory for driving) first aid courses get taught a simple technique to remove a helmet safely (ideally with two people). Reason being is that with the helmet on it is harder to monitor breathing and impossible / very difficult to do CPR, and the helmet will also interfe…

It’s interesting to see how differently first aid is taught across countries. Eg the last training I did in the US (California), I was surprised by two things that I had not encountered when I was trained in France: - a big concern around pathogens - always have gloves with you and put them on when administering first aid especially if the person is bleeding; use a mouth dam for mouth to mouth and if you don’t have o…

Can you expand on your second point, if you have a moment?

I knew someone (in California) who crashed his bicycle on a curb in front of a number of people. He picked himself up and had a bloody but minor wound on his arm. But overall he was unharmed, just some surface bleeding.

"Of course" multiple people called 911, and an ambulance arrived in short order. He had insurance, but he wasn't interested in getting in an ambulance, he wanted to look after his bike while wrapping up his light wound, and then treating it later.

I'm told the exchange was awkward to say the least.

Re: Is Conference Room Air Making Us Dumber?

#142

Earlier quoted context omitted.

I picked up a CO2 monitor a while ago myself, and the biggest surprise was having it on in the morning in our bedroom with the doors closed. It was easily over 1000ppm IIRC. Ever since then I've made sure to set my AC system to run the "house fan" for 15 minutes or so every hour at night just to circulate the air in the house, and while the numbers went down significantly, anecdotally I swear that I wake up easier in…

Your post has made me consider getting a C02 monitor, will something as simple as this 20 buck Chinese version suffice? https://www.newegg.com/Product/Product.aspx?Item=9SIADJN8NP4... Seems a useful thing to have. Separately it is very stressful being on stage at conferences that are stuffy with no fresh air, hot stage lights and probably very low oxygen. I had a friend who did press ups before going on stage to ener…

I can't see that link (it says the product ID is invalid), but I know that measuring CO2 is actually pretty hard and requires some somewhat expensive stuff, but measuring things like O2 is easy (i believe, i'm going from memory here).

So most cheap CO2 monitors are actually just oxygen monitors that aren't actually measuring the CO2 levels but are measuring the drop in O2 levels and extrapolating from there.

I don't know if that matters for what you might want to use them for, but it's something to be aware of.

I don't have mine any more, I actually borrowed it from a friend and it was a fairly expensive one (like in the $200 range) that he was using for some other stuff.

Re: Is Conference Room Air Making Us Dumber?

#144
post #6

I own a CO2 monitor and it is shocking how high it can get in a house with two people just existing. 800 ppm or more. Outside air is 410. In a car with air on recirculate, it was getting to >1220 ppm, a level that impairs decision making and lowers brain function. I try to drive with air on fresh from now on. I don’t doubt the air in our conference room with 20 people gets super high in CO2 as the meeting goes on, an…

Could you recommend a CO2 monitor? How did you decide to purchase the model that you own?

I have been considering making a CO2 sensor myself using commercially available CO2 detectors [1] , [2] and an Arduino or similar microcontroller, insructions for which abound on the intertubes [3], [4]. Such a device can be made fairly inexpensively.

However, there is a known issue in calibrating the device, as the IR emitter and light sensor change characteristics over time. The calibration requires immersing the device in nitrogen or pure CO2 and is costly and complex. The workaround is to calibrate the device outdoors where there is an assumed 400 ppm CO2.

[1] https://www.co2meter.com/collections/0-1-co2

[2] https://www.epluse.com/en/products/co2-measurement/co2-senso...

[3] https://www.dfrobot.com/blog-70.html

[4] https://www.youtube.com/watch?v=V1uOHOcVZrE

Re: Is Conference Room Air Making Us Dumber?

#145
post #47

Earlier quoted context omitted.

For anyone considering this in a winter area: you only need a window open a crack to ventilate a whole apartment. More circulation happens due to the heat differential (I think?) In any case it has little effect on heating bills. My canadian grandma actually used to have a window cracked open all winter, and she was rather frugal. My own heating bills changed little since I started.

There must be some shape that can work as both air filter and heat exchange, so one could have ample air circulation while keeping the heat inside, at the cost of having to wash it once every few months. I wonder how expensive that would be.

There are heat recovery ventilators, but they require central ducting. Unsure if any solutions exist for other dwellings.

Re: Is Conference Room Air Making Us Dumber?

#147

Earlier quoted context omitted.

Apparently there was a fad for building schools with no windows. There's a 70s era middle school in the (U.S.) town where I live; it won a design award for its total lack of fenestration. It was supposed to reduce distraction or something.

My HS in central NJ had neither windows in the classrooms, nor WALLS. It was designed like a giant open office bullpen thing and classes were supposed to congregate in vaguely defined areas. By the time I got there in the early 90s, they had already erected borders everywhere out of movable chalkboards, so you basically got a traditional classroom layout but with noise pollution from all the other classes going on ne…

Sounds like HHS. I was there in the 00s and the borders were these "permanent" accordion wall things

Re: Is Conference Room Air Making Us Dumber?

#148
post #47

Earlier quoted context omitted.

For anyone considering this in a winter area: you only need a window open a crack to ventilate a whole apartment. More circulation happens due to the heat differential (I think?) In any case it has little effect on heating bills. My canadian grandma actually used to have a window cracked open all winter, and she was rather frugal. My own heating bills changed little since I started.

There must be some shape that can work as both air filter and heat exchange, so one could have ample air circulation while keeping the heat inside, at the cost of having to wash it once every few months. I wonder how expensive that would be.

'Heat recovery ventilation' is the solution.

Re: Is Conference Room Air Making Us Dumber?

#150

Earlier quoted context omitted.

School classrooms (20-30 people, 1-2 hours, closed windows, no ventilation) are probably worse than any conference room.

Apparently there was a fad for building schools with no windows. There's a 70s era middle school in the (U.S.) town where I live; it won a design award for its total lack of fenestration. It was supposed to reduce distraction or something.

My school was like that. I always heard it was in response to the 1970's energy crisis - windows are bad insulators.
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