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RE: [PSUBS-MAILIST] Re: sub
Kind of unrelated, but here is an article about the O2/CO2/Other gas
management on the International Space Station. Decent reading, if nothing
else.
Lynn
-----Original Message-----
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org]On Behalf Of Ray Keefer
Sent: Monday, November 13, 2000 6:03 PM
To: Ray@psubs.org; phil_trimble@hotmail.com
Cc: personal_submersibles@psubs.org
Subject: [PSUBS-MAILIST] Re: sub
Hi Phil,
If you can plow through the archive at the web site this issue has
been discussed before. Unfortunately the archive is not an easy thing
to read.
To get rid of carbon dioxide can be done in one of several ways:
1. Surface and replentish the air. Simplest and easiest way.
2. Use an chemical absorbent and extract the CO2 from the air.
The oxygen in the air will be turned into CO2 gradually as you
breath. I believe there is a slight pressure change but I am not
sure it is toward more pressure or less. Yes, you do add more O2 but
at the same time the CO2 is being absorbed out of the air. So it is
a minor net change.
3. Just keep adding air. This will increase the air pressure inside
the sub. You need to have a pressure release valve so as you
surface with an over pressurized sub you don't unseat your viewports.
Even unseating them from their seals a little will allow sea water in
and you will sink.
Another problem is that the CO2 level will also keep increasing.
At some point that will become toxic.
4. Add more oxygen. Again you will increase air pressure. How much
oxygen is critical. Too much and you will get oxygen poisoning.
Plus you have all the other issues as it 3 above.
Regards,
Ray
> X-Originating-IP: [24.66.16.3]
> From: "Phil Trimble" <phil_trimble@hotmail.com>
> To: Ray@PSUBS.ORG
> Subject: sub
> Date: Mon, 13 Nov 2000 17:24:17 EST
> X-OriginalArrivalTime: 13 Nov 2000 22:24:17.0383 (UTC)
FILETIME=[75EBEF70:01C04DC0]
>
> Hello
> i have been reserching on the internet about building a personal (up to 4
> seater) i have pretty much figerd it out exept that i dont know about the
> air system,
> i was wondering about getting rid of the carbon dioxide while under water,
> and how to get rid of extra preasure after being relesed into the cabin
from
> the tanks...
> plz email me back
> Thx alot Phil Trimble
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