81–90 of 98 posts
I've bought [1] and coupled it with Zabbix using [2]. Now I have a pretty realtime graph and a strong reasoning to air my room more often. [1] https://www.tfa-dostmann.de/en/product/co2-monitor-airco2ntr... [2] https://codeberg.org/pf-monitoring/airco2ntrold
Does it allow you to read data via USB or is that just the power supply?
I've bought [1] and coupled it with Zabbix using [2]. Now I have a pretty realtime graph and a strong reasoning to air my room more often. [1] https://www.tfa-dostmann.de/en/product/co2-monitor-airco2ntr... [2] https://codeberg.org/pf-monitoring/airco2ntrold
Not sure if they still make them with speakers that sound like life support monitors in the hospital, but if the beeping is too annoying you can just open the back and break off the speaker with pliers.
I have a fantastic way that I’ve trained my CO2 sense: an Italian greyhound. Anything above 900ppm and he barks and gets quite frantic above 1100ppm. I’m now able to anticipate the barking and normally realise at about 850ppm that we need to go for a walk and open the windows. A vet friend theorised that because they have a completely disproportionate and crazy cardiopulmonary system (huge lungs and heart compared to…
On a related note: A friend of mine was exposed to high co2 levels while on a freight ship. He says it is the absolute worst feeling he has ever felt, with panic and convulsions and vomiting. He survived because a colleague of his managed to get him out. Kinda makes me wonder why it is still allowed in animal slaughter. It is cheap and gets the job done, but there must be better gasses. There are loads that just make…
https://www.mayoclinic.org/diseases-conditions/carbon-monoxi...
Though symptoms are quite similar to those of CO2 poisoning:
https://www.emedicinehealth.com/wilderness_carbon_dioxide_to...
One of the symptoms of CO poisoning I've heard mentioned is of a sense of doom or dread.
CO2 concentrations are an ongoing topic of debate. There are studies that show no measurable cognitive changes up to CO2 concentrations in the thousands of PPM, while other studies seem to show cognitive changes at much lower amounts. I tend to think that people with CO2 sensors tend to over-focus on CO2, when really what they’re feeling is the general stuffiness of a room. CO2 isn’t the only thing that accumulates i…
I wondered this too. Like yeah you’re going to be cognitively drained after being in a crowded closed meeting room for a long time. Is it because you were talking and working or because of the CO2.
I've been using the uHoo air monitor for the last few months. I have one in the bedroom, living room, and office. It monitors many air factors, but CO2 was my primary focus. My original goal was to have a fresh air intake activate automatically at certain concentration levels, if the outside ambient temperature/humidity were appropriate. However, living in a hot humid place, the data I got made that solution seem fut…
That I'd very interesting. Is ther data on how much C02 is consumed by lettece?
That's a lot of plants. Possible, but your house will feel more like a rainforest.
Earlier quoted context omitted.
I wondered this too. Like yeah you’re going to be cognitively drained after being in a crowded closed meeting room for a long time. Is it because you were talking and working or because of the CO2.
If the sense lifts immediately (within seconds to a minute or so) after opening a door or window, I'd tend to suspect the atmosphere.
CO2 concentrations are an ongoing topic of debate. There are studies that show no measurable cognitive changes up to CO2 concentrations in the thousands of PPM, while other studies seem to show cognitive changes at much lower amounts. I tend to think that people with CO2 sensors tend to over-focus on CO2, when really what they’re feeling is the general stuffiness of a room. CO2 isn’t the only thing that accumulates i…
Earlier quoted context omitted.
From some (personal) research I did several years ago, I think good ventilation is by far the biggest concern. A well-sealed, occupied room can build up significant CO2 levels pretty quickly. In my particular case, one person, not exercising, could bring CO2 above 800ppm (reported) in just a few hours. So I think lack of ventilation causes way, way more excess CO2 than is caused by recent increases in atmospheric CO2…
My issue with that is that in the summer, ventilation is ~impossible. It's 110 degrees out there, reasonable ventilation would mean either burning out my A/C or living with temps that are far too high.
I also couldn't spend thousands on an energy recovery ventilator (ERV) installation because I've been living in rental properties.
My solution was to buy an ERV for ~$500 and rig it up to an open window: https://gen.co/air
I've since moved into a condo with a bedroom with no windows and french glass doors so I installed a cat door and mounted the ERV vents to that.
I think there's a lot of money here for someone to build an ERV designed to be window mounted.
I feel terrible above like 900/1000ppm but I’m sure it’s also a good proxy for whatever other garbage and voc’s are in the air. When my monitor reaches 800 I’ll throw my window exhaust fan on for a few hours to circulate the air in my home.
How many people, in what square metreage, over how many hours, does it take you to go from ambient levels to 800? I can take your figures and calculate the same for my conditions by rejiggering the input assumptions instead of buying a monitor.