Easy way to find the potential energy in compressed air

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To calculate the potential energy of compressed air in a .81 Cu. Ft. cylinder at 80 Psi, it's essential to clarify the conditions of energy extraction, specifically whether the expansion is isothermal or adiabatic. The method of expansion significantly affects the energy calculations. Additionally, the discussion raises the possibility of considering energy in the context of a rupture scenario, akin to an explosion. Providing more context about the intended use or conditions would lead to a more accurate answer. Understanding these factors is crucial for determining the potential energy effectively.
Scott Davies
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I have a .81 Cu. Ft. cylinder which is at a static pressure of 80 Psi. What is the easiest way to calculate the Potential Energy of the compressed air?
 
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Hi and welcome to PF.
You would need to specify the conditions how the work is obtained from the compressed air because the conditions for the expansion will make a difference. Is it Isothermal or Adiabatic expansion?
Is this basically a question about the possible energy in an explosion, if the cylinder ruptures, for instance? A bit more context would help to get the answer you need.
 

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