Just a thought but if the source of condensate in the normal humidity
contained in the air filling the internal spaces of the Sub, then after
it forms on the interior of the pressure hull any device would be
ineffective unless evaporation of this water reoccurs.
What about a system that dehumidifies the air prior to the operation of
the Psub. In Euronaut's case maybe running and circulating the air
through an A/C system of the diesel for a set period of time before a
mission would be a solution.
In a smaller Psub I would think condensate is also supplied to the Psubs
atmosphere via the Psubber. It maybe possible by operating a similar A/C
device using a domestic fridge compressor prior to the mission. This
device could be powered by an external source.
To deal with the condensate supplied via the Psubber maybe a Hazardous
gas mask that only covers the nose and mouth, reverse the valve so you
are breathing out through the filter canisters and fill the canisters
with Crystals.
Steve P
-----Original Message-----
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Joseph
Perkel
Sent: Thursday, 7 September 2006 10:26 AM
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] Sodium Polyacrylate
It would appear that this problem is both a common and significant
enough
annoyance to warrant precisely what George is proposing...prototype and
testing. Unless someone has found an "off the shelf solution" which
Carstens
posts lead me to believe, are probably non-existent or at least not
effective for this application.
So for my part I'd like to contribute data such as this MSDS link on
this
substance...
http://www.sciencestuff.com/msds/C2688.html
As a medical professional, my mind leans toward watching out for
exposure
hazards I have seen the crystals on my daughter on occasion, and there
is
some hoopla out there about it's use in diapers but, this stuff appears
pretty benign. Most anything is pretty bad for you these days.
The water absorbent properties seem too good to ignore for further
study.
Still....I would take care to make sure it stays out of the air by using
it
in crystal and not powder form.
Joe
From: MerlinSub@t-online.de
Reply-To: personal_submersibles@psubs.org
To: <personal_submersibles@psubs.org>
Subject: RE: [PSUBS-MAILIST] Sodium Polyacrylate
Date: 06 Sep 2006 21:41 GMT
I just staring my test with the Co2 scrubber
partly filled with Silikagel cristalls.
regards Carsten
"Smyth, Alec" <Alec.Smyth@compuware.com> schrieb:
> George,
>
> If you build a prototype dehumidifier I'll be happy to test it for
you
> in the sub. I think condensation accounts for a lot of the
maintenance
> load, as everything basically ends up soaking wet.
>
> thanks,
>
> Alec
>
> -----Original Message-----
> From: owner-personal_submersibles@psubs.org
> [mailto:owner-personal_submersibles@psubs.org] On Behalf Of George
> Slaterpryce
> Sent: Wednesday, September 06, 2006 3:24 PM
> To: PSUBS Mailing List
> Subject: [PSUBS-MAILIST] Sodium Polyacrylate
>
>
> Ok, I can't find a pre-fab Hummidity filter made with this stuff
> anywhere online... I know that they are made... but my google-fu is
not
> strong on this search.
>
> SO...
>
> I thought about how you might make one.
>
> First and foremost, used product will have to be switched out
> from time to time, so the main filter component will have to be easy
to
> get to and switch out.
>
> Second to promote condensation and from there condensation
> inside the filter unit itself it'll have to be slightly cooler than
the
> enviroment outside the filter... Problem... small refrigiration
units
> are expensive (energy use wise)
>
> So, what I think one should do is to use a pipe with a fan on
> the intake side and a normal air filter on the outflow side. that
> inbetween the intake and outflow has a copper coil with a simple
> fountain (12vdc) pump that pushes rubbing alchohol through the pipe
at
> speed. Probably accellerated via a kort like nozzle off the pump. It
> wouldn't cool well enough for a air conditioner, but it should
promote a
> cool atmosphere inside the filter which would promote water to
condense
> within the filter. In the center of the coil which is inside the
pipe
> would be a tissue bag full of sodium polyacrylate. That once used
can
> simply be pulled out and replaced.
>
> I'm thinking of taking a break from BugEye II to prototype this.
> Anyone interesting in providing a testbed if I do?
>
>
> George H. Slaterpryce III
> www.captovis.com
>
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