Re: [PSUBS-MAILIST] ExtendAir scrubber cartridge

[Jon Wallace <jonw@psubs.org>]

I'm not exactly sure where you're going with this Rick.  Are you 
thinking of cook-book type instructions for a common home-built scrubber?

Flow rate is important only as it relates to the dwell time of the air 
passing over the absorption material.  I think the variables involved 
with packing of loose material and canister design are too wide to 
define a specific "flow rate" in isolation.   So to answer your 
question, you standardize (in a practical sense, not a technical sense) 
the flow rate by standardizing the canister.  From a practical 
perspective, a particular flow rate would likely work on a multitude of 
canister designs.  And in complementary fashion, numerous flow rates 
would likely work adequately with a specific canister design.

Jon


Rick & Marcia wrote:
> I understand flow rate is important.  How to standardise that in the 
> homemade units?
>  
> Rick in Vancouver




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