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Dear Thijs.
I don't really know the answer you are seeking
since I do not know anything about what Michael Wludarczyk was writing
about
nor am I familiar with PP02 as a term.
But I am thinking you could eliminate the
problem (if it could possibly become one) entirely by simply not using
oxygen.
I am wondering when you say Michael Mludarczyk said
"the partial pressure of the oxygen" do you actually mean regular air
that
we breath or use in our scuba tanks without any
nitrox mix,
or do you actually mean concentrated oxygen with
no other gas mixed with it?
You could use another gas for pressure
compensation
since you wouldn't have to worry about breathing
it.
Bill Akins.
----- Original Message -----
Sent: Tuesday, January 18, 2005 4:02
PM
Subject: [PSUBS-MAILIST] Question about
pressure compensation
Bill and the rest,
Pressure compensation of battery pods and
trusters with air seems the most simple and clean way to do it i think. It
also has the advantage that you don't have to put a square battery in a
bulky round box. But in a discussion on this subject a view years ago Michael
Wludarczyk wrote that at higher pressure (300 psi / 200 mtr.) the
partial pressure of the oxygen (PPO2) becomes so high that there is a
substantial fire risk. This is of course a lethal depth for an ambient sub but
i want to go to 100 mtr. in an 1 atm. sub. Eigther i missed something during
my schooldays or i simply forgot but PPO2 doesn't mean anything to me.
Is there someone on the list who can say something sensible about
this?
Thanks,
Thijs Struijs
The Netherlands
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