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Can a vortex tube be reversed?

  1. Jul 28, 2015 #1
    If atmospheric pressure hot and cold air are sent into the opposing sides of a vortex tube (the ports normally used for gas outlet), will compressed air be generated/released from the hole/port normally used for gas input?

    maxresdefault.jpg
    The reverse of the system above (cold and hot air enter from opposing ends and compressed air is sent out).
     
  2. jcsd
  3. Aug 1, 2015 #2

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    "Strictly?" "Trick" a gas into flowing from low-P to high-P by mixing hot and cold streams? Not without significant waste.
     
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