Re: [PSUBS-MAILIST] pressure hull sizing

[CARRO@wans.net]

I believe that your body will burn up the O2.  The extra CO2 produced will 
be bound in in the scrubber and no 
longer in a gas state. The pressure change will be minimal and can be vented 
upon surfacing through the 
required equilization valve. Before hatch opening.
--- Original Message ---
From: Coalbunny <coalbunny@onewest.net>
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] pressure hull sizing

>Nothing stupid about it Adam.  I've wondered that myself.  I imagine the
>pressure would increase, and you're really not doing anything about the
>CO2, just adding O2.  I would bet that would soon lead to a very toxic
>environment.
>Carl
>
>
>adam sweet wrote:
>> 
>> Actually, I've been wondering about this system for a while.
>> when you bleed oxygen into the cabin, does the cabin pressure not go
>> up? And if so, how do you evacuate the exess pressure from inside the
>> cabin to bring it back down to 1ATM?
>> 
>> thanks for putting up with my dumb questions ;)
>> adam
>> 
>> DBACKIDS@aol.com wrote:
>> 
>> > Most likely the air support will be a recirculated air line w/ o2
>> > being bled in and co2 scrubbers in the system. The o2 will be held
>> > in spherical tanks outside my main pressure hull, and the scrubber
>> > perhaps underneath the seat(s). The air would drawn out through a
>> > vent into the scrubbing system, then mixed with a line coming from
>> > the o2 tanks. The o2 bleed could maybe be set at a constant rate, or
>> > computer controlled to keep a fixed amount in the cabin.
>> > That's about as much as I've thought out so far. Any suggestions?
>> >
>> > David
>
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