[PSUBS-MAILIST] co2 scrubber

[Sean T. Stevenson via Personal_Submersibles]

Yes. For the chemical reaction to work properly, the air needs some dwell time against the scrubber media. This may be specified in the media datasheets. Regardless, if your fan is too strong and you're blowing tons of air through it, you may just dry it out while scrubbing really inefficiently.  If you slow it down, you give the CO2 time to react and the bed gets more efficient. This is one of the reasons why radial flow scrubbers have an advantage - the surface area is huge, so the actual flow velocity through the bed is minimal in comparison to an axial flow design. You only need enough airflow to remove CO2 faster than you produce it, and ideally to process the entire air volume in your cabin a few times an hour. Slow, large diameter fans will be more effective than a high speed but small fan, and probably easier on your batteries too.

Sean



On February 4, 2017 2:38:32 PM MST, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>Is there such a thing as to TOO much air flow through a scrubber ??
>
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>Brian
>
>--- personal_submersibles at psubs.org wrote:
>
>From: Cliff Redus via Personal_Submersibles
><personal_submersibles at psubs.org>
>To: Personal Submersibles General Discussion
><personal_submersibles at psubs.org>
>Subject: Re: [PSUBS-MAILIST] co2 scrubber
>Date: Fri, 3 Feb 2017 09:34:40 -0600
>
>Brian, see
>http://www.ntz-filter.com/Radial_Filtration_versus_Axial_Filtration for
>picture which is worth at least a hundred words.
>
>
>Cliff
>
>
>
>
>On Thu, Feb 2, 2017 at 11:36 PM, Brian Cox via Personal_Submersibles
><personal_submersibles at psubs.org> wrote:
>
>What is the difference between a Axial scrubber and a radial ?
>
> 
>
>Brian
>
>--- personal_submersibles at psubs.org wrote:
>
>From: via Personal_Submersibles <personal_submersibles at psubs.org>
>To: Personal Submersibles General Discussion
><personal_submersibles at psubs.org>
>Subject: Re: [PSUBS-MAILIST] co2 scrubber
>Date: Thu, 2 Feb 2017 16:29:34 -0600
>
>Started life with axial scrubber but now use radial design.  Has worked
>much better for me.
>
>
>Cliff
>
>Sent from my iPad
>
>
>On Feb 2, 2017, at 1:06 PM, hank pronk via Personal_Submersibles
><personal_submersibles at psubs.org> wrote:
>
>Thanks' guys, that helps.  
>
>Cliff, I assume you have an axial scrubber
>
>Hank
>
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