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Old 6th December 2007, 16:22   #2 (permalink)
Mark Chase
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Re: Channeling - Defined...?

Quote: (Originally Posted by netmage) View Original Post
Been following the discussions on CO2, scrubber packing etc.. and I'm a little confused... What exactly is channeling...?

Is it physical 'gaps' in the scrubber bed; whereby gas can find the path of least resistance w/o being scrubbed through loose material...?

Or is it chemical 'gaps' in the scrubber bed; as in the repacking case, whereby gas finds a path thru used material in the scrubber bed...?

-Tim
(I pick up my meg tomorrow, class starts 1/24....)


Spot on


Settlement of the scrubber in a horizontal position may leave a loose fill or even a physical hole up the side of a scrubber (something the design of the rEvo scrubber seems more prone to IMHO)

Mainly its clumping of the sorb or something like the repacking incident which leaves a path through the scrubber of spent lime.

Whilst the path may be small C02 has a cumulative effect so will gradually build up during the dive.


ATB

Mark
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