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Making liquid nitrogen from air

  1. Sep 2, 2012 #1
    Has anyone done this as a DIY project? I want to use a refrigerator compressor with counter-current coils.
  2. jcsd
  3. Sep 3, 2012 #2
    The foreign wikipedia claims that the Linde method uses a pressure of 200bar. I doubt, that your refrigerator compressor can produce that.
  4. Sep 10, 2012 #3
    It's infinitely easier to just buy it from a commerical vendor - it's really cheap. Any DIY attempt would likely also make LOX, which could be very dangerous.
  5. Sep 11, 2012 #4
    what are counter-current coils? what would they do?

    i know that compressing a gas will cause it to liquefy, depending on temperature, but i don't know how electrical/magnetic fields come into play.
  6. Sep 11, 2012 #5
    he means a countercurrent heat exchanger i.e. you have 2 plug flow reactors one in another, and on the outside one the fluid flows 1 way, the inside one you have the fluid flows another way.
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