Re: more cabin questions

[Jon@AppliedThought.com (Jon Hylands)]

On Wed, 8 Oct 1997 10:44:53 -0400 (EDT), Coast Guard Kiteman
<exfloridians@ecsu.campus.mci.net> wrote:

>         Okay, you lost me on the metabolize thing (or I just didn't 'grok'
> it the first
> time around).  Even though you're metabolizing O2, you're giving off CO2, so
> the cabin pressure will still rise.  The 'partial pressure' of O2 becomes CO2
> (out of the entire atmosphere).  Am I way off here?

No, I think the CO2 is chemically removed from the air by reacting with the
Soda lime in the scrubber.

That's why a rebreather system for diving doesn't give off any bubbles if
you don't change depth (or if you go down). I should have remembered that
before adding my two cents in yesterday... :-)

Fortunately, in a one-atmosphere sub, we don't have to deal with a lot of
other problems diving rebreathers have, like oxygen poisoning (you can
breathe pure O2 at one atmosphere, but don't try it at three...)

Later,
Jon

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