Re: more cabin questions

[Coast Guard Kiteman <exfloridians@ecsu.campus.mci.net>]

At 11:05 AM 10/8/1997 -0400, Alan D. Secor 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?
>> -Allan "CGK" Gaines


>The CO2 is absorbed by the scrubber. If you didn't inject O2, the net 
>would
>be a decrease of pressure in the cabin.  Think of how a fully closed 
>circuit
>rebreather works....CO2 is scrubbed (absorbed) out of the exhaled air, O2 
>is
>injected to account for the O2 metabolized (or used up) and the net is no
>internal pressure change.  If there was, you'd either have exhaust bubbles
>(which you don't) or your net bouyancy would increase (which it doesn't).
>--
>Alan D. Secor
>e-mail: secor@btv.ibm.com


        Okay, the lights just went on.  <g>   Thanks.