Re: [PSUBS-MAILIST] solid amine CO2 scrubbers

[s_lindblom@conknet.com (Steve Lindblom)]

The Russians use this stuff like this in their sub rescue lungs and other
rebreathers though this may be a bad time to bring it up. A lot of this
hardware is showing up now on the world market.

O2 monitors/analyzers are easy to build using a cheap off-the-shelf digital
panel meter - the whole system, box and sensor, for about $100. Plans
(along with a lot of other useful O2 info) can be found in the OXY HACKER
www.conknet.com/~g_packard/oxyhacker.html



>Potassium Superoxide has been considered as an alternative to CO2
>Scrubber/Compressed O2 systems. It absorbs CO2 and produces O2. However, the
>ratio of O2 production to CO2 absorption is too high. As I recall, it's an
>unpleasantly exothermic reaction. Add in features like expensive, unstable
>and hygroscopic (sp?), and those little green bottles of compressed O2 start
>looking darn friendly.
>
>In the recent thread concerning Life Support control systems, there have
>been some concerns about excess O2 partial pressures. A lotta guys might
>divide their O2 supply into several little green tanks instead of one giant
>green tank.