## Energy stored in compressed air?

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!!!
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 Mentor You can just take the internal energy (after-before) from a table of thermodynamic properties and multiply by the flow rate.
 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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