Re: Compressed Air Powered Air Compressor...Confus

Posted by Janicholson on February 23, 2007 at 16:35:25 from (66.173.50.143):

In Reply to: Compressed Air Powered Air Compressor...Confused posted by in-too-deep on February 23, 2007 at 14:10:03:

I'll chime in with a bit of reason (maybe)
If a source of compressed air was available at 100 psi and 100 cfm (a lot) but to power the ""car"" compressed air was needed at 3500 psi to have enough to go to town and get back. The high volume air could run a compressor, that also took in the 100 psi air, and through several stages drive it to 3500 psi. A two stage compressor recompresses air to higher pressures. it would be inefficient Compressing air produces heat (Bowels law) and that heat is almost always either lost, or not wanted in the compressed air. The cooling reduces the pressure, but allows more dense compressed air (hence intercoolers on turbochargers). It (like many wool over the eyes projects) does little to reassure me. Where is power source that drives compressor for the original compressed air, and why did they only compress it a little? JimN

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