171–180 of 471 posts
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EVs drastically reduce brake dust.
Probably not in the city, regenerative breaking doesn't fit most scenarios, especially seeing how people tend to drive high torque vehicles.
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I believe these are evaporative and are mentioned: >Just use an evaporative or steam humidifier, which seem to create almost no particles.
this article talks about this more: https://molekule.science/should-you-choose-an-ultrasonic-hum... quite interesting
I'm surprised this doesn't mention gas stoves and ovens. Gas is the "high end" option, yet creates totally unnecessary PM2.5 pollution in your home. Children growing up with gas stoves have higher rates of asthma.
Very interesting to me that gas is considered the 'high end'-option, I presume in the U.S? Where I live, the high end-option is to get an induction stove. I have one, and it's extremely pleasant to cook on. Granted, I've never cooked on gas because that alternative is mostly not used, in my experience.
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You are describing an anaesthesia circle breathing system, otherwise known as a rebreather scuba set. :-) You would need to consider the occupant oxygen consumption. A typical human respiratory quotient is 0.8 (0.8 mole of CO2 produced for every 1 mole of O2 consumed). You’ll get a net inward movement of gas into house all things being considered. Anyway, don’t do if. If you do it ‘right’ the argon will slowly build…
Oh I'm not interested in hermetically sealing my apartment, there are no worries of normally constructed buildings being able to withstand a meaningful difference in oxygen pressure between inside and outside. CO2 pressure though can easily be increased by a large factor (5x is easy) and maintained with humans inside and closed doors and windows. PM2.5 is easy to maintain with HEPA filters. CO2 is not easy to maintai…
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The question is how much CO2 can I fix with a reasonably sized apparatus and really I would prefer a continuous system (which is why electrolysis) rather than a batch system. Also I would prefer levels lower than outside, obviously air exchangers will necessarily be worse than just being outside.
I'd assume that some chemist or other has already published a paper about that. But you could probably figure it out yourself experimentally by weighing quicklime, letting it react and weighing it again. Start a youtube channel to finance the project :)
My literature searches haven't had much success thus far, lacking a chemistry degree hasn't helped. I have found some things but not enough to come to any sort of engineering designs. I'm assuming it's one of those things that's almost too simple for anyone to have bothered writing a paper about unless they had the exact sort of ideas I did. (OR they're using terms that I haven't been able to come up with yet)
Thank you for this extensive resource on air quality. Yes, it needs to get more attention as it is one of the main drivers of mortality of environmental risks. One thing one has to bear in mind is that often when you optmize your home for low PM (e.g. with air purifiers and fixing of air leackage) your CO2 will get very high causing headaches and reduce cognitive performance. So it always makes sense for indoor air q…
I have an AirVisual Pro, which is quite expensive, but my half finished air quality monitor project had been on the bench for much too long. I have windows open all the time, air conditioning on too often, and dehumidifiers and HEPA filters as well. It is not efficient or particularly environmentally friendly... but I want a CO2 level My next half baked idea is figuring out a way to have a sealed home and an applianc…
This article seems to make fantastic jumps from the believable -- mortality from overall air pollution (e.g. in Delhi) to the frankly unbelievable -- your ultrasonic humidifier supposedly reducing your life by nearly an hour each night, or that a daily commute between Newark and NYC takes half a year off your life. According to this logic, anyone who works in the subway should be dying, what, 10 years earlier? Which…
Extinguish candles with a lid. If you are worrying about the method by which you extinguish a candle, worrying is what's going to shorten your life, not the candle.
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> Gas is the "high end" option Few years ago I moved from a little apartment with an electric range to an SFH with gas everything. "Good for you," my gas-enthusiast family said, "now you have a REAL stove" It still takes forever to boil water in a pot. The food tastes the same. I wonder why furnaces have these fancy high-efficiency heat exchangers and stoves don't? Cost? I wouldn't mind going back to electric. I just…
I think the point is control. Induction stoves are pretty good for dumping watts into water. However, it's very hard to get a good mid-range temperature. Gas makes it really straightforward to get something cooking at exactly the heat you want.
Are you sure you’ve used an induction stove and not just a regular electric stove?
Glass flat top electric stoves are not usually not induction stoves though they look the same.
I'm surprised this doesn't mention gas stoves and ovens. Gas is the "high end" option, yet creates totally unnecessary PM2.5 pollution in your home. Children growing up with gas stoves have higher rates of asthma.
Very interesting to me that gas is considered the 'high end'-option, I presume in the U.S? Where I live, the high end-option is to get an induction stove. I have one, and it's extremely pleasant to cook on. Granted, I've never cooked on gas because that alternative is mostly not used, in my experience.