[PSUBS-MAILIST] charcoal filter

[Antoine Delafargue via Personal_Submersibles]

I did not upgrade the fan but indeed noticed the flow rate dropped a bit
I used a short pvc pipe (water collection type) 200mm diam i
think, with end caps on each end (each male side glued in the pvc section,
female side just screwed by hand to open/close (few dollars at dyi store)
lots of 10mm holes in both end caps
And scotchbrite filters (kitchen sponges/scrub) against each end cap to
hold charcoal in
I had actually made a small oxygen rebreather scrubber to hold the
sodalime with that same cheap method.

Antoine

On Tuesday, September 19, 2017, hank pronk via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi Antoine,
> Did you have to up size the fan or are you on lung power only?   I will
> put a charcoal filter on just because it seems practical and it is pretty
> cheap.
> What did you use for the filter?
> Hank
>
> On Tuesday, September 19, 2017, 11:37:02 AM MDT, Antoine Delafargue via
> Personal_Submersibles <personal_submersibles at psubs.org
> <javascript:_e(%7B%7D,'cvml','personal_submersibles at psubs.org');>> wrote:
>
>
> Hi Hank
> I have installed one on the intake hose of the scrubber. With a dedicated
> cannister. It works well for odors but don t think it would be any good for
> smoke and all its possible harmful contents like carbon monoxide.
> Regards
> Antoine
>
> On Tuesday, September 19, 2017, hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org
> <javascript:_e(%7B%7D,'cvml','personal_submersibles at psubs.org');>> wrote:
>
> Hi All,
> A while back we were talking about charcoal filtering the sub
> environment.  Sean suggested a charcoal filter and it has been on my mind.
> I think it is a great idea.  I was thinking about putting the charcoal
> filter on the scrubber intake because my rebreather scrubber is a sealed
> can.  The other scrubber would need to have the filter on the discharge
> end.
> Has anyone done this.
> This has come to mind after Scott brought up the smoke issue.  Is there a
> reason I should not put one at the intake of my rebreather scrubber.  It
> should help with toxic smoke since it is the scrubber  I can breath through
> manually.
> Hank
>
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