liquid air
Anyone built a air liquification setup from old AC parts?
Thought maybe a 3 stage (propane, CO2, air) AC type setup would work. Have a few old compressors sitting around. Then easy to get your own liquid N2 O2 and CO2 supplies for just the power costs. |
For oxygen, just look for an oxygen concentrator on Craigslist. Nitrogen is going to be tricky due to the purity requirements.
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You might check out the Xtreme System Forum FORUM. I don't recall anyone trying to liquify air, but I do know that there are some two-stage compressor systems that have been built. As I recall, they used a volumetrically smaller compressor in the second stage, so the same would apply for subsequent stages, too. Steel tubing seems appropriate instead of copper. Some way to remove the heat of compression between stages. Maybe do your initial testing behind a blast wall (no joke). Sounds like a fitting project for a mad scientist. Keep us posted... this kind of thing could apply to low temperature ASHP projects, too. Also two stage compressors for making DIY vacuum pumps. How would you separate the gases? Best, -AC |
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I think I have reas that the oxygen and nitrogen are seperated , via their different boiling temps ? Can not remember which boils at the higher temp . Carbon dioxide would have condensed at a higher temp , and seperated , before you got down to the temp of liquid air . Do not know about the other trace gasses ? All in all , sounds like it is more trouble than it is worth ? But different strokes for different folks . God bless Wyr |
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I think it would be a stunning achievement, to make your own liquid nitrogen, oxygen and CO2. If it sounds like too much trouble, there is always a TV and an easy chair not far away. -AC |
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In between , I am happy for the TV , couch and or bed to grab me . :-) But , different strokes ......... God bless Wyr |
sounds like too much trouble
After 50+ years of 24/7 14+ hour days it is hard to slow down in 'retirement', even though still doing consulting work. Heck, I STILL feel somewhat feel guilty if I sit in an easy chair for more than a few hours a day. Besides, I tried to do liquid air diy back in high school (1950s) but only had pop's paint spray compressor to work with - so, maybe time to try again? Somethings are simply 'fun', re; well drilling, - figured for time spent on that could have done day job for 5% of time and hired it drilled, but then could not claim to never having hired anything done except medical/dental. |
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