[PSUBS-MAILIST] Calculating Scrubber Residence/Contact Time

[hank pronk via Personal_Submersibles]

 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 HPHank
    On Thursday, November 23, 2017, 8:06:42 AM MST, Steve McQueen via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
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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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