Gas laws

[fluidtronic]

Anyone that can help me with enclosed problem ?

AccumulatorProblem.doc

[Enthalpy]

I can solve it, but its mathematical formulation is a detour for me. Would it be possible to formulate it in physical or engineering terms? Is K from nitrogen at moderate pressure, or at least can I use some mean value for it, as high pressure in hydraulic accumulators makes it non-ideal?

 

What are the indices 0,1,2: full of oil, empty...? Even better, do you have numerical values?

 

Sorry for the unusual query, but I think a little bit differently from usual scientists, and the physical feeling would save me much time.

 

If you don't choose this way: the best method with gases uses to compute temperature differences or ratios, as temperature is so to say the central value, even if you don't need it at the end. Its difference relates easily with work in your adiabatic process, and its ratio relates simply with pressure and volume ratios.

Edited April 27, 2013 by Enthalpy