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Thermodynamics-Entropy Question

  1. Dec 12, 2008 #1
    I am just confused as to how to evaluate the term sa=specific entropy of air

    I have reduced an entropy balance to the following:


    I know how to evaluate sv and how to evaluate entropy differences but the air has three terms, so how can evaluate it?

    Here's a schematic.

  2. jcsd
  3. Dec 13, 2008 #2
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