[PSUBS-MAILIST] Calculating Scrubber Residence/Contact Time

[Rick Patton via Personal_Submersibles]

I was thinking when i get to that point, of mounting my CO2 meter at the
exhaust port of the scrubber and using it to dial in the best flow rate.
Rick

On Thu, Nov 23, 2017 at 9:27 AM hank pronk via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Steve,
> I read somewhere that the scrubber needs to be two times as tall as it is
> wide.  I have followed that rule ever since.  Then the theory about as long
> a soak time as possible comes into play.  My feeling is that that is only
> important with a closed system like a re-breather.  I base that on Gamma's
> original scrubber witch was about 10 inches in dia and 6 inches tall with
> an open top and a hurricane force fan drawing air through it.  It makes
> sense to me that it does not matter how long the soak time is in a
> submarine environment as long as you have air flow over the media.  I would
> do what you have to to make it fit, then play with flow rates.  The key to
> a good scrubber seems to be to use good media, like Soda Sorb HP
> Hank
>
> On Thursday, November 23, 2017, 8:06:42 AM MST, Steve McQueen via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> All, I am considering reducing the dimensions (length) of my scrubber  to
> fit into a vertical mounting arrangement in my K-250.  I believe I have a
> pretty good handle on sorting out the impact to the performance with the
> exception of residence/contact time.
>
>
>
> I know the Reynolds factor for my media, chamber length, diameter and the
> flow rate from the fan.
>
>
>
> Anyone have a general formula?
>
>
>
> Steve
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