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Energy stored in compressed air?

  1. Feb 22, 2008 #1
    Hi, I am trying to figure out how much energy is stored in compressed air. I have figured out that a device I am looking at compresses about 174 cubic feet per minute into 35 cubic feet and that the temperature would rise from 70 F to 550 F.

    I now want to know how much energy, in the form of heat, is available. I am assuming it is an adiabatic process.

    Can you help me understand how I calculate the energy?

    Thank you!!!
  2. jcsd
  3. Feb 22, 2008 #2


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    Staff: Mentor

    You can just take the internal energy (after-before) from a table of thermodynamic properties and multiply by the flow rate.
  4. Feb 23, 2008 #3
    according to thermodynamics 1st law sum of heat energy equal to sum of workdone so u have to calculate amount of energy
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