Re: [PSUBS-MAILIST] Alec, Scrubber

["Dan H." <JMachine@adelphia.net>]

http://www.prismnet.com/~moki/subfiles

Scroll down to near the bottom and click for the link to Alec's scrubber.

Dan H.

----- Original Message -----
From: "Pierre Poulin" <pipo305@hotmail.com>
To: <personal_submersibles@psubs.org>
Sent: Wednesday, January 08, 2003 1:36 PM
Subject: RE: [PSUBS-MAILIST] Alec, Scrubber


> Where can I see that pic?
> I think I missed something!
>
> Thanks
>
> Pierre
>
>
>
>
> >From: "Alec Smyth" <Asmyth@changepoint.com>
> >Reply-To: personal_submersibles@psubs.org
> >To: <personal_submersibles@psubs.org>
> >Subject: RE: [PSUBS-MAILIST] Alec, Scrubber
> >Date: Wed, 8 Jan 2003 10:14:43 -0500
> >
> >Please see below...
> >
> >rgds,
> >
> >Alec
> >
> >-----Original Message-----
> >From: Dan H. [mailto:JMachine@adelphia.net]
> >Sent: Tuesday, January 07, 2003 10:30 PM
> >To: personal_submersibles@psubs.org
> >Subject: [PSUBS-MAILIST] Alec, Scrubber
> >
> >
> >Alec,
> >I was looking at the pics of your scrubber and have some questions.
> >
> >Your fan motor is in the half with the clear canister, correct?
> >[Alec Smyth] The clear can contains sofnolime. Its clear so I can see the
> >change of color.
> >
> >It looks like the fan is mounted in the white plastic.  Am I correct, or
is
> >the fan inside the black housing?
> >[Alec Smyth] The white plastic contains two fans. The U tube puts them in
> >series. If one fan quits, at least the other continues pushing air
through
> >both cans.
> >
> >If the black housing doesn't contain the fan, what is it for?
> >[Alec Smyth] Well, for one it came with the proper thread and airtight
seal
> >for the canister to screw into! (taken together, the black and clear part
> >are nothing more than a wet-environment industrial lamp from the MSC
> >catalog) But it has several other functions too. It contains a stainless
> >spring-loaded device that presses a perforated disk down on the Sofnolime
> >to keep pressure on it, so tunnels do not form in the material. It also
> >makes the clear canister draw from lower down. CO2 goes to the bottom of
> >the hull. The scrubber draws air in vertically through holes in the
bottom
> >of the clear canister, and expels it horizontally through the bottom of
the
> >secondary white canister. And finally, if my fans were stong enough --
> >which unfortunately they are not -- it also just happens to be the right
> >size to accomodate a standard respirator cartridge of activated carbon,
> >which is good for eliminating odors or anything else should the air be
> >contaminated.
> >
> >What is the clear canister below the black housing for?
> >[Alec Smyth] So that I am not sucking in the air I just scrubbed.
> >
> >Why didn't you just mount a fan on top of the white plastic pipe fittings
> >containing the scrubbing agent instead of using the U tubing?
> >[Alec Smyth] The whole idea of this scrubber is that the fans are
> >completely enclosed by sofnolime in order to keep it quiet. The ratio of
> >volumes of the canisters is about 3:1, which I found made the sofnolime
in
> >the entry and exit canister get used up at about the same time. You need
> >less sofnolime in the second can because the air that is entering it is
> >already scrubbed by the first.
> >
> >
> >Thanks,  Dan H.
> >
>
>
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