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Re: [PSUBS-MAILIST] CO2 Scrubber
I understand why divers wouldn't want to, but I still do. I don't
see what the problem is. You simply have to properly granulate and
hydrate the calcium hydroxide. Furthermore, you can get the product
from chemical suppliers properly packaged and pure for less. I wouldn't
need of want the coloring agent. I would be using CO2 analyzers on inlet
and exhaust to decide when to replace. Like I said though, the medium is
rechargeable. I don't think you would want to if you were talking short
range weekend diver...
Warren.
> At 09:52 AM 1/6/2003 +0800, Warrend Greenway wrote:
> >The basic scrubber will consist of a canister with two screens
>
> >calcium hydroxide is standard slaked or hydrated lime, available at any
> hardware
> >store for a few bucks a fifty pound sack.
>
> I've been on the "rebreather" listserv for a couple years since this is
> another interest of mine. You might enjoy this website--
> http://www.atlimp.com/pend2.htm, although he is more serious with other
> projects - http://www.atlimp.com/home.htm
> other "famous" homemades -
> http://www.metacut.com/rebreathers/TP2000/Default.htm (this author died
> last month when the helicopter he was piloting crashed into NY waterfront
> at night- another dangerous activity),
> http://home1.gte.net/doctrbob/CCO2.htm,
> http://www.hrc.wmin.ac.uk:8080/xml/kiss/home,
> http://insel.heim.at/malediven/350052/english.htm
>
> I don't think any serious divers would use hardware store hydrated lime.
> The CO2 absorption depends on the exposure to the surface area of the
> sodalime "granules" and anyone who bets their life on such only purchases
> prepared "sodalime" from suppliers that have a consistant and reliable
> product. The sodalime is discarded and replaced in the scrubber for each
> dive. source - http://www.metacut.com/rebreathers//sofnolime.htm - this one
> changes color as product is used up.
>
> William Alford
> walford@dbtech.net
>
> Tout comprendre c'est tout pardonner
--
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