Originally Posted by foreigneRS
so you want to add energy to the air by compressing it to 3 bar, then take energy out to get it back to 2 bar and you think that somehow you will gain something?
No, thats not how it works.
You compress it to 30 bar or something along those lines.
It gets VERY hot as a result of the compression.
you pass your air at 300 degrees+ through an intercooler and bring it down to 100 degrees.
Then you let it expand, which massively drops the temperature, and it ends up sub zero
Its just a fridge basically mate!