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).
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?