energ8

6 ms·

1.
by energ8 1y ago
"significant increase in the range of 10.7-42.2% for lightweight and aerodynamic efficient vehicles" shout out to aptera motors https://aptera.us/vehicle/ that's currently vapor ware "Designed with
2.
by energ8 1y ago
It's a thing in from thousands of years ago https://en.m.wikipedia.org/wiki/Yakhch%C4%81l and today https://en.m.wikipedia.org/wiki/Passive_daytime_radiative_co... for PDRC there are a couple
3.
by energ8 4y ago
I have seen repeated claims of heat pump CoPs improving over decades. Can anyone summarize or provide links to what improvements are being made? Compressor technology? refrigerants? Fans to move heat? all of the above? Where is the path fro
4.
by energ8 4y ago
There might be an additional benefit for fossil fuel trains. Point source capture is usually more efficient than direct air capture. This isn't necessarily directly point source, but if the diesel exhaust is partially directed into the
5.
by energ8 5y ago
It'd be somewhat custom, but there is a commercial heat exchanger ( https://www.hotspotenergy.com/pool-heater/ ) that an HVAC tech should be able to install
6.
by energ8 5y ago
You might be interested in this paywalled paper (or similar ones): https://pubs.acs.org/doi/10.1021/acs.iecr.0c02255
7.
by energ8 5y ago
> by applying heat More heat than is common for home appliances I know! A commonly referenced stat is 825 C. There's really a gradient: https://en.m.wikipedia.org/wiki/Calcium_carbonate#Calcinatio...
8.
by energ8 5y ago
From my armchair-research, there are scale challenges with plants. Algae is commonly the go-to for CO2 scrubbing for it's relative efficiencies. Algae might scrub 1-3 grams of CO2 per liter per day ( https://www.osti.gov&#x2F
9.
by energ8 5y ago
I think there are large room diy heat pumps. "diy mini split heat" found me this [0] for example. Also, depending on your hackerness, you could adapt window air conditioners. From what I've seen, solar PV for heat only really
10.
by energ8 6y ago
Residential Flywheel Energy Storage by Velkess: http://velkess.com/letter.html Maybe sad more than surprised
11.
by energ8 6y ago
Scarves are also a mainstream style choice for keeping necks warm, inside and out. Dropping the style, Neck Gaiters, Buffs, and Balaclavas are my go-tos for real cold.
12.
by energ8 6y ago
The kickstarter project has transformed into Sefton Motors, which says it has engines backordered (but in production): https://seftonmotors.com/collections/all
13.
by energ8 6y ago
The fans like this I've seen are powered by TEGs, just like the article is talking about. So, yes, but there is a trade-off. For those familiar with ICE engines, I'd compare it to the trade-off of a turbo/super charger.
14.
by energ8 6y ago
From my reading of heat pumps, mismatches in energy sources and sinks can make linking things together more complicated (aka more expensive) than is commonly available. For the pool <-> A/C case, This Old House did a segment on l
15.
by energ8 7y ago
Yeah, FT looked insane, which is one of the reasons the linked paper was so attractive. Ethanol from CO2, electricity, and water at ambient temperature and pressure. I mostly think I have to be doing some chemistry/math wrong, based on
16.
by energ8 7y ago
A previous comment on HN went something along the lines of "what is going to happen in the summer when we've built solar/wind/etc to fulfill this winter months needs?" I started researching energy storage. Creating