Message text written by jim wallace
>But then not a month later - I saw a posting by someone on another board
that
totally deflated my theory. He claimed that there are such losses that in
the
ideal case, in my 6:1 example, you could see 180 psi or so.
I don't get it. I thought I had it all figured out, and life was pretty
good
there for a while. My question is, how could it NOT be that atmospheric
pressure is being multiplied by the compression ratio to end up at the psi
I
see on my compression gauge?
<
Boy, don't you just hate it when life doesn't fit our convenient theories.
And no matter how much you wish things to be so, nature just won't
co-operate at times. Why can't mother nature be more reasonable?!!
Someone else on the list mentioned a big $25 word that sounded a bit like
stochiometric. That has something to do with the conservation of enthalpy
or something like that but a short answer even I can understand is that
when you compress air it heats up so following the gas law: PV= nRT, there
are three things varying at the same time. P goes up as V goes down but P
will go up some more as T goes up so the increase in P is greater than what
you would expect if you vary V alone.
Now, how many angels CAN dance on the head of a pin?
Dave
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