Homemade Liquid Nitrogen with the Joule-Thompson Effect

Re:Homemade Liquid Nitrogen with the Joule-Thompson Effect by Scoundreller on Sunday August 18, 2019 @11:05PM (#20734569)

Thanks!

Was hoping sublimation worked like melting+evaporation, but nowhere close :(

On toxicity, my thinking was you would need a lot more N2 to displace enough atmospheric O2 to cause a problem.

Whereas the sublimating CO2 does displace O2, the CO2 itself is toxic and would probably kill you first. But maybe not in the tent scenario.

Dunno if the DIY N2 has a lot of liquid O2 in it anyway?

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Re:Homemade Liquid Nitrogen with the Joule-Thompson Effect by adrianN on Monday August 19, 2019 @01:47AM (#20735202)

CO2 is safer since our bodies have receptors that notice CO2 buildup in the bloodstream, but no receptors that notice lack of oxygen. Breathing pure nitrogen is a very gentle way of killing yourself. You just fall unconscious and die.

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