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Is there a practical method to achieve sub-atmospheric CO2 concentrations indoors? If taking CO2 of the atmosphere may take a long time then at least keeping o

Is there a practical method to achieve sub-atmospheric CO2 concentrations indoors? If taking CO2 of the atmosphere may take a long time then at least keeping our indoor environments at low levels will prevent the cognitive & health issues.

anonporridge 5y ago
Have I got a product for you! https://www.youtube.com/watch?v=NWZUp2KF5ls https://www.youtube.com/watch?v=NWZUp2KF5ls
gruez 5y ago
> Is there a practical method to achieve sub-atmospheric CO2 concentrations indoors? why? just because there's cognitive decline when co2 is above atmospheric levels, doesn't mean you get super-intelligence when it's below atmospheric levels. In that case you're better off ventilating your building than to scrub co2 from the air.
- neltnerb 5y ago
  Atmospheric levels are increasing. You can't use ventilation to bring the indoor CO2 concentration down to, say, 350ppm like it used to be outdoors. But I think the answer is... practical, sure I guess. expensive? energy intensive? waste intensive? also yes.
  - philwelch 5y ago
    The health effects of high CO2 concentration start to appear in the mid-thousands of ppm. These problems are about an order of magnitude away from each other.
    - neltnerb 5y ago
      Yes, that's what the data suggests. It's just not what the question was... Of course, the data is necessarily all about short term exposure, not non-stop. I'm inclined to think that it won't be too bad, if there is a direct effect at lower levels.
philwelch 5y ago
This isn’t worth worrying about. The atmosphere has a CO2 concentration of about 413 ppm. The International Space Station operates at a maximum CO2 concentration of over 5000 ppm. 5000 ppm is also the maximum safe CO2 concentration recommended by OSHA and the approximate average CO2 concentration aboard nuclear submarines. This still might be slightly too high—astronauts and submariners commonly report headaches, for instance—but it’s about ten times the concentration of the outside atmosphere and the health effects are a little hard to measure. Plus, the people in these conditions are still capable of safely operating space stations and nuclear submarines, which is not a cognitively easy feat. If the CO2 concentration of Earth’s atmosphere got that high, we’d have much bigger problems.

anonporridge 5y ago

Have I got a product for you! https://www.youtube.com/watch?v=NWZUp2KF5ls https://www.youtube.com/watch?v=NWZUp2KF5ls

gruez 5y ago

> Is there a practical method to achieve sub-atmospheric CO2 concentrations indoors? why? just because there's cognitive decline when co2 is above atmospheric levels, doesn't mean you get super-intelligence when it's below atmospheric levels. In that case you're better off ventilating your building than to scrub co2 from the air.

neltnerb 5y ago
Atmospheric levels are increasing. You can't use ventilation to bring the indoor CO2 concentration down to, say, 350ppm like it used to be outdoors. But I think the answer is... practical, sure I guess. expensive? energy intensive? waste intensive? also yes.
- philwelch 5y ago
  The health effects of high CO2 concentration start to appear in the mid-thousands of ppm. These problems are about an order of magnitude away from each other.
  - neltnerb 5y ago
    Yes, that's what the data suggests. It's just not what the question was... Of course, the data is necessarily all about short term exposure, not non-stop. I'm inclined to think that it won't be too bad, if there is a direct effect at lower levels.

philwelch 5y ago

This isn’t worth worrying about. The atmosphere has a CO2 concentration of about 413 ppm. The International Space Station operates at a maximum CO2 concentration of over 5000 ppm. 5000 ppm is also the maximum safe CO2 concentration recommended by OSHA and the approximate average CO2 concentration aboard nuclear submarines. This still might be slightly too high—astronauts and submariners commonly report headaches, for instance—but it’s about ten times the concentration of the outside atmosphere and the health effects are a little hard to measure. Plus, the people in these conditions are still capable of safely operating space stations and nuclear submarines, which is not a cognitively easy feat. If the CO2 concentration of Earth’s atmosphere got that high, we’d have much bigger problems.