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Vacuum insulation

  1. Sep 19, 2011 #1
    I would like to know if there is a formula or a way to determine the amount of insulation a vacuum of 1 bar can produce. please note I am not talking about vacuum insulated panels.
  2. jcsd
  3. Sep 20, 2011 #2


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    insulation to what ?
    heat ? electrical ionisation something else ??

  4. Sep 21, 2011 #3
    Thermal insulaion
  5. Sep 21, 2011 #4


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    1 Bar is the atmospheric pressure, i.e. it is not a vacuum at all.

    But regardless of the pressure: no there is no formula. It is of course perfectly possible to calculate the heat transfer due to convection, conduction and radiation; but all of these will depend on the geometry and the materials used.
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