I AM INVINCIBLE!
this post was submitted on 29 Jun 2026
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Better luck next time, slugheads!
I used to work in a warehouse freezer, i did get dizzy at times when going from -25° to +40° but goddamn that was the best AC i ever had.
I've read about people in the South Pole station in Antarctica who experience 300°F temperature swings by setting their saunas heated to 200°F (93°C), sitting in there for 10 minutes, then walking naked (except boots) outside around the ceremonial South Pole marker, on days where it's below -100°F (-73°C).
It sounds crazy, especially in that the people who talk about it explain that they do get minor frostbite and lung damage from the experience.
It might be too humid for your sweat to evaporate so your body isn't cooling down, you may want to take frequent showers (just to rinse off) or use a wet washcloth to wipe the sweat off if that's not an option.
But yeah, too damn relatable, I'm feeling like a supervillain the way I want to destroy the sun...
Air is only 0.04% CO2 but 78% nitrogen. I propose we standardize liquid nitrogen as the de facto portable, single-use coolant over grocery store dry ice.
Instead of cooling the whole room it's more efficient to cool individual people though. Which means taking advantage of their sweat's evaporation would make more sense. So like those reflective Japanese jumpsuits with fans at the bottom and outlets at the top are probably the best design. A little evaporating or sublimating gas in the suit couldn't hurt though (depending on where the reservoir is held).
Questions:
How are we harvesting and refining N2 from the ambient air?
What equipment are we doing this with?
How much does that cost? To acquire, and to run?
How much heat is generated when you pull nitrogen out of the air?
... if you can answer those questions practically and affordably...
Well now ... is this nitrogen more valuable as a personal coolant, or as an input for fertilizers or other various specialized industry/tech processes?
When I worked at a kilo-scale chemical manufacturing job, some of our labs weren’t really air conditioned and/or were partially outside. It got up to 110F in the summer. The trick was to drop a little chunk of dry ice in each of your lab coat pockets. Kept me alive, at least.
Listen, the NMR doesn't need the LN2.
Keep a towel in a bucket of ice water, wrapped around the neck, does wonders for the heat. Or just keep a wet towel in your freezer for like 30 minutes.
I used to work in a lab that had a -40 degree walk in freezer. It was wonderful to spend a few minutes in on an extremely hot day.
Is that in smart units or dumb units?
Both
Please people don't fuck about with oxygen displacement 😭
You can make reusable ice packs with some liquid dish soap, water, and a hand towel/big towel and some type of ziplock bag; though the vacuum seal food bags are much more reliable.
The dish soap allows it to remain pliable so it can be molded into you. And the custom sizes and shapes allow you to place it usefully- big flat ones on the spine is ooo-la-la. If you need to cool off in a hurry? Long ones under the arm pits, shins, fore arms and around thighs, too.
Easy change is a longer, some what wide shape that you can fold around your neck, kinda like a scarf.
How much soap are we talking?
From my no experience with this method, but marginal experience with soaps, I'd say more than you would use to wash some dishes but not that much more.
Enough to make it sudsy? Probably about like for blowing bubbles?
so cold it freezer burns.
Aren’t these people like 140 years old now?
All old people know what it's like to be young, but no young person knows what it's like to be old.
So?
Do you mean like... collectively?