Imagine if we applied this logic to climate change?
The bottleneck might be the air in the room
451–460 of 499 posts
Re: The bottleneck might be the air in the room
#452Earlier quoted context omitted.
Cars are not a problem no matter where you live. You described a very specific circumstance and projected it on to all rural areas, which doesn’t work.
The point is that urban/rural is irrelevant to this discussion. Every urban area that I've ever lived in has had better air quality than the rural area I grew up in.
Same point, n=1. Anecdotally your testimony is solid. Very much anecdotal.
Re: The bottleneck might be the air in the room
#453Earlier quoted context omitted.
I had a project miniaturizing nasa tech for detecting hypoxia with o2 and CO2 sensors. It used a phosphorescent dye that changed a delay flash (ie you blinked a light, the dye would absorbed and blink back after a delay) based on temp and o2. CO2 was measured with infrared but water also absorbed it, so you need to heat things up enough to not have water. It can be small, but not watch small. All and all interesting…
> CO2 was measured with infrared but water also absorbed it, so you need to heat things up enough to not have water. It can be small, but not watch small. Can't you just measure CO2 "naively"; but then also, separately, measure rH; and then use the rH value to grab a research-calibrated LUT to pass the raw CO2 value through? (I presume this is why all the little standalone CO2-sensor boxes you can buy also have rH di…
You could maybe, but water tended to collect on the surface (this was exhaled breath, so pretty humid).
Maybe if it was ambient air and not breath the humidity might not be as bad?
Re: The bottleneck might be the air in the room
#454Earlier quoted context omitted.
I don’t think we actually care about co2 levels. I think we use them as a proxy for o2 levels (same as our bodies do). So your idea would be great.
This is extremely wrong: CO2 impairment kicks in around 1000 ppm[1] possibly lower. You can hit this breathing by yourself in an unventilated 3x3m room (literally measured in my house). 1 https://pmc.ncbi.nlm.nih.gov/articles/PMC4892924/
there is some ambiguity here. submariners are exposed to really high co2 levels and are doing fine. it's possible that regular high co2 is just a proxy for bad air, and that you can acclimate to purely high co2 pretty well.
i have felt bad in high co2 environments before but i have never been in a controlled high co2 environment.
Re: The bottleneck might be the air in the room
#455Earlier quoted context omitted.
You hit it even easier when driving in a car with the internal circulation turned on to keep nasty fumes out.
In a car with Recirculation Mode on Levels routinely spike between 1,500 and 4,000 ppm within 20 to 30 minutes. I wonder how many driving accidents can be saved by having a co2 monitor in the car.
I had to drive a rental car for a bit recently, after getting rear-ended, and I was shocked to discover that it defaulted to recirculation mode every time it was turned on, regardless of whether you'd turned it off the previous time. I felt light-headed in it a few times before I realized I needed to manually turn recirculation off every time. Horrible behavior, and I don't doubt that it's responsible for many accidents.
Re: The bottleneck might be the air in the room
#456Earlier quoted context omitted.
This is extremely wrong: CO2 impairment kicks in around 1000 ppm[1] possibly lower. You can hit this breathing by yourself in an unventilated 3x3m room (literally measured in my house). 1 https://pmc.ncbi.nlm.nih.gov/articles/PMC4892924/
there is some ambiguity here. submariners are exposed to really high co2 levels and are doing fine. it's possible that regular high co2 is just a proxy for bad air, and that you can acclimate to purely high co2 pretty well. i have felt bad in high co2 environments before but i have never been in a controlled high co2 environment.
I'm not implying permanent effects. The studies involved show a marginal reduction in cognitive reasoning on standardized tests.
Which is the point: if you're in a room trying to do deep work, that's likely a problem. I suspect submarines are all over the place here: you might be exposed to higher levels routinely but you also have regular access to chemical scrubbers and decent ventilation. I'd be fascinated to know what levels are tracked as normal.
Re: The bottleneck might be the air in the room
#457Earlier quoted context omitted.
And window.
An open window means kilowatts of energy wasted. All the air I spent money cooling will just leak out. It also means all the pollen will be let in.
Depends which way the wind is coming from.
Depends if you live where there is pollen.
Depends if you generate your power with solar.
Re: The bottleneck might be the air in the room
#458> With so much work now remote, your people spend their days in small home offices with the door shut.
People should probably get used to opening doors and windows more. Sure for some people there's noise problems (kids in the house, or outside environment being noisy) but there's also a lot of people who just don't know better even if they are in a perfect environment to open windows in (e.g. no noise outside).
Re: The bottleneck might be the air in the room
#459any tips for calibrating or even just validating these handheld CO2 meters? i've taken a few Amazon-listed CO2 meters from $dirt-cheap to $150, tossed them in a ziplock, and then discharged CO2 from a canister into the bag & sealed it. none of them read notably differently after an hour, nor show any sort of range error, etc. i've also done this without the ziplock: put them in a large pot, fill that with CO2. CO2's…
I mean, I validate them by opening my window and seeing what the floor is. For me around 430ish usually - inline with what's in the atmosphere globally.
Re: The bottleneck might be the air in the room
#460Earlier quoted context omitted.
there is some ambiguity here. submariners are exposed to really high co2 levels and are doing fine. it's possible that regular high co2 is just a proxy for bad air, and that you can acclimate to purely high co2 pretty well. i have felt bad in high co2 environments before but i have never been in a controlled high co2 environment.
I'm not implying permanent effects. The studies involved show a marginal reduction in cognitive reasoning on standardized tests. Which is the point: if you're in a room trying to do deep work, that's likely a problem. I suspect submarines are all over the place here: you might be exposed to higher levels routinely but you also have regular access to chemical scrubbers and decent ventilation. I'd be fascinated to know…
apparently those scrubbers are less efficient the lower the co2 is (also need to move much more air which ruins stealth). iirc submarines are routinely exposed to multiple thousands.