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Rate of frost formation

  1. Jul 13, 2010 #1
    Could you please explain me how to predict the rate of formation of frost around a pipe carrying cryogenic fluid if the relative humidity is known?

    I am not able to make any assumptions as frost is porous.
    Is experimental analysis the only solution to this problem ?
    Can it be solved by taking some assumptions?

  2. jcsd
  3. Jul 14, 2010 #2
    I would hazard that this would be a wildly intractable problem.
    There are so many variables.

    If I were forced to take a stab at it, I'd have to assume that the main heat gain was due to the frost formation so that the latent heat of melting/freezing would be the major factor. But that neglects the very significant losses by convection, radiation and conduction, which are incalculable. I doubt that the answer would be even close to reality.

    Why not just lag it well and good and forget about the problem?
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