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Re: [PSUBS-MAILIST] CO2 Scrubber - and a cheap tester?!
Why don't you try it in a vaccum chamber? This sounds cool to me! If
I get the chance I'll try it, but I'm pretty busy with the scrubber
right now.
Warren.
> I'm interested!
> Carl
>
>
> emm03@mirapoint.uow.edu.au wrote:
> >
> > Ok!
> > And while we are on the topic.....
> > Has anyone yet had a chance to test out my fabulous - new -
> > and - improved idea for testing CO2 levels in a confined area?
> >
> > It involves percolating ambient air through a solution
> > containing phenyl red, which turns red in the presence of
> > acid. And CO2 dissolved in water produces carbonic acid -> a
> > wizzbang way to see if there is too much CO2 in the air.
> >
> > But...
> > I dont have access to a small air-tight area similar to the
> > inside of a sub, so I was hoping that someone could test it
> > out (before diving!) for me?
> >
> > My preliminary tests of simply blowing into a glass
> > containing this solution works fine, all I need is an idea of
> > how sensitive it is! (which will be independant on the amount
> > of phenyl red that is used..!)
> >
> > Anyone interested contact me please! I would really like to
> > see how this works!
> >
> > thanks all.
> >
> > EM.
> >
> > ---- Original message ----
> > >Date: Tue, 07 Jan 2003 06:57:35 +0800
> > >From: "Warrend Greenway" <dub@linuxmail.org>
> > >Subject: Re: [PSUBS-MAILIST] CO2 Scrubber
> > >To: personal_submersibles@psubs.org
> > >
> > >Because that's what I do every day of my life. I build
> > things I really
> > >could buy, and push technology. I come from a family of
> > engineers. We don't
> > >sit on our cheeks! We DO things. I needed an engine
> > hoist...So my dad and
> > >myself designed the best darn hoist you have ever seen and
> > built it! We
> > >could have actually bought a good enough hoist for less, but
> > we wanted to
> > >build it. That is the real reason I am interested in PSUBS.
> > I will build my
> > >hull, my instruments, my air recycling system, and my
> > power/speed controller
> > >circuitry. Why? Because that's the game! I will carefully
> > test my system before
> > >I use it, and if I can't make it function reliably then I
> > won't use it. I might
> > >even use the sofnolime blend just for fun, but I will still
> > build my own waste-
> > >heat rechargeable system to use it in. Besides it's mostly
> > just fun to consider
> > >the alternatives to standard systems. But I also see what
> > you are saying. Building
> > >everything is not for everyone. You may not have the time or
> > interest. That's
> > >fine.
> > >
> > >Warren.
> > >
> > >> Hi,
> > >> I dont understand why you dont want to use the sofnolime
> > specially designed
> > >> for life support systems, do you want to make your own
> > just to save $50 and
> > >> risk your life.
> > >> Amazing to see that every year divers die with market
> > rebreathers, yet guys
> > >> outhere are ready to dive in carboard sub and milk cartons
> > rebreathers and
> > >> try anything for the freedom of doing it.
> > >> A "regular" sub is ALREADY difficult and tricky to put
> > together, why even
> > >> considere nuclear homemade sub, flying subs, propane subs,
> > peroxyde subs,
> > >> and other out of your mind submersible, did anyone tried
> > telekinesis sub,
> > >> warp sub, or time travel sub, is there anyone left here
> > who wants to build
> > >> just a realistic sub?
> > >> Herve
> > >> ----- Original Message -----
> > >> From: "Warrend Greenway" <dub@linuxmail.org>
> > >> To: <personal_submersibles@psubs.org>
> > >> Sent: Monday, January 06, 2003 1:03 PM
> > >> Subject: 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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