120psi propane wouldn't burn at all, Rob - too little oxygen.February 22 2012 at 8:12 AM
Steve in NC (Login pneuguy)
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Response to iirc the compressed pressure of propane is 120psi
If you're old enough to remember cars with carburetors, then you know about "flooding" an engine with gas. Too much fuel (i.e., too "rich" a mixture) will put the fire out.
The same principle applies to all fuels that depend on an external oxidizer - propane too.
So if you tried to mix 120psia (i.e., 8 bar) propane with 14.5psia (i.e., 1 bar) air, you wouldn't get more pressure. You'd get no combustion at all.