you can’t turn a gas into liquid by compression alone if temperature is above critical point, you also need to cool it down. separation is done by fractional distillation, but the reason it’s done is mostly about oxygen (medical and steelmaking among some other uses). for nitrogen it’s somewhere about -150C. first air is stripped of water and carbon dioxide, then it’s turned into a liquid, then it’s separated into oxygen, nitrogen and argon, and some large specialized plants also separate xenon, krypton and neon

if you don’t actually care for it being a liquid, there’s another method called pressure swing adsorption that separates gases based on how tightly do they bind to porous surfaces under pressure. this is how medical oxygen concentrators work

making liquid nitrogen is pretty efficient these days, as in not much more energy is used than is actually needed

shooting down bosses stupid ideas is #1 productivity tip for professionals (like most people on lemmy are)

if everything else fails add matrix account to your profile (to have another communication option) and reach out to admin of your instance

as i understand, this is what bellingcat uses as a major source of data when reporting on russian activities

“It is one of the paradoxes of modern Russia: on the one hand, these services are illegal and rely on leaked data, yet on the other, they are far more convenient for day-to-day police work than the multitude of official departmental databases,”

gaben on piracy: “We think there is a fundamental misconception about piracy. Piracy is almost always a service problem and not a pricing problem,”

There is a thermal energy storage included as s major part. This works because compressing CO2 to 55atm adiabatically heats it up to some 450-ish C, so that heat is pretty high grade, and only the final stage cools it down with heat exchanger open to air. In discharging direction, some heat is taken from outside air to evaporate part of CO2 and heat stored is used up

compressors, turbines (like steam turbines), piping, some of which heat-resistant (500C), container for liquid carbon dioxide, lots of plastic for the bubble, something for thermal storage, dry and clean carbon dioxide, these aren’t unusual or restricted resources, don’t depend on critical raw materials or anything like that

Compressed air without heat recovery is more like 30%, so this is huge

Carbon dioxide can be liquefied relatively easily which is what i guess makes this efficient

wood, magnesium, aluminum, plastics, they say titanium is bad, but i’d expect iron, nickel, manganese, tungsten, silver, maybe zinc to be worse

in this economy?

🌏👨‍🚀🔫👨‍🚀 (currently since 2023)

yeah piracy community is three blocks down, fuck off

there were reports of roombas not getting up because us-east-1 was down, don’t be so surprised

the same way they did in 2021

ah yes chatbot seller says these things will become so capable, they’re gonna destroy the world, just you wait and see, but need trillion dollars in financing first. op have you eaten your daily recommended pebble today?

can these things be reflashed?

llms allowed them to glide all the way to the point of failure without learning anything

80000 hours are the same cultists from lesswrong/EA that believe singularity any time now and they’re also the core of people trying to build their imagined machine god in openai and anthropic

it’s all very much expected. verbose nonsense is their speciality and they did that way before time when chatbots were a thing

bro tried to recruit jihadists in roblox (failed) and now screenshots from this all are a matter of public record 💀

For slightly earlier instance of it, there’s also real time bidding