6 ms·
> Get CO2 down to 450 ppm And buildings will be much more pleasant. It's possible that people would be smarter, too (as opposed to being shut up in a badly ven
by quercusa 6y ago
> Get CO2 down to 450 ppm
And buildings will be much more pleasant. It's possible that people would be smarter, too (as opposed to being shut up in a badly ventilated conference room for an hour or two).
There are costs, as heat or/AC will have to run more to keep the temperature in the right range.
- danans 6y ago> There are costs, as heat or/AC will have to run more to keep the temperature in the right range. Heat recovery ventilators can largely solve this problem, while also reducing particulate pollution indoors.
- melling 6y agoInteresting, with climate change CO2 will be increasing to over 450 ppm at some point. Will we have an issue with airborne diseases?
- graeme 6y agoNo the co2 is a proxy for air exchange with the outside. It is the air exchange that prevents disease, not low CO2.
- philwelch 6y agoSubmarines tend to operate at CO2 levels around 3500 ppm, and there doesn’t seem to be strong evidence of any cognitive effects. Infectious disease would be more of a concern, but the submarine itself is a pretty effective quarantine.
- pfdietz 6y agoCounterflow air-to-air heat exchangers mitigate much of that cost.
- quercusa 6y agoI knew about residential ones but it looks like there are commercial ERVs as well: https://www.york.com/commercial-equipment/air-systems/energy-recovery-ventilators https://www.york.com/commercial-equipment/air-systems/energy...
- harry8 6y agoAlso widening the range would be a reasonable thing. Wear a jumper in winter. Don't be forced to go from 40C to 20C in summer. We don't need precisely the same temperature 24/7, 365.
- marttt 6y agoHeat people, not places: https://www.lowtechmagazine.com/2015/02/heating-people-not-spaces.html https://www.lowtechmagazine.com/2015/02/heating-people-not-s...
- derefr 6y agoThat's nice for heat, but thermal mass means that air conditioning is most efficient when it can get the whole room to equilibrium and then shut off. Like a car coasting going down a hill.
- carlmr 6y agoI always see it like this, if it's cold you can put on more clothes (you probably already have them, and they don't waste energy to wear). When it's hot, there's a certain societal lower threshold for what you're allowed to wear in an office (depending on the office shorts are ok, but not less). So you can't individually cool down.
- sepin4 6y agoI just bought my apartment last year and I made the decision to use infrared panels for heating. Best decision ever. No moving parts(no noise and no constant breeze), no dry air indoors, the heat is actually stored in the walls and furniture(denser objects), so I can vent the air regularly without loosing much energy. And it's supposed to help generate vitamin D which during the winter is usually a problem. The downside is that it takes longer than air conditioning to warm up the same room and it requires great wall and floor insulation(which I have). There is also the problem of overshooting the temperature(because the panels don't cool immediately, it takes about 15-20 min), which is solved in some thermostats using hysteresis algorithms for the temperature delta(it uses shorter cycles between on and off and more precise measurements, however this could wear the electrical panels quicker). I'm not that sensitive to the temperature so I don't use those and I have my temperature sensitivity up to 0.5C.