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OfflineTheUnknownPoet
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Plenum
    #19041678 - 10/27/13 05:00 PM (10 years, 3 months ago)

I'm building my second flowhood, a bit bigger than my first, and i'm wondering how small i can make the plenum.
In my last flowhood, i made the plenum 3 times as thick as the filter itself (18 inches) and this is too big and bulky. Can i get away with a 6 inch filter and a 6 inch plenum behind it, or will this not work? (This will allow me to have a thinner hood, and be able to put it on a countertop and such.)


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OfflineTheUnknownPoet
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Re: Plenum [Re: TheUnknownPoet]
    #19046008 - 10/28/13 12:59 PM (10 years, 3 months ago)

Funny how everyone on this forum is LSD syntheses experts, but cant tell me a single thing about a plenum. Hahaha.


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Offlinemonoculture
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Re: Plenum [Re: TheUnknownPoet]
    #19046069 - 10/28/13 01:14 PM (10 years, 3 months ago)

Quote:

TheUnknownPoet said:
Funny how everyone on this forum is LSD syntheses experts, but cant tell me a single thing about a plenum. Hahaha.




About the same as asking a plummer a question about electronics or the other way around.
I would look at sites like www.fungi.com. They have filters there and they have ready built flow hoods with those filters in them.
box depth minus filter thickness is the plenum.
I bet those boxes did prove themselves by now, so if you stick to that ratio you should be fine.


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OfflineSagescruffy
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Re: Plenum [Re: TheUnknownPoet]
    #19046234 - 10/28/13 01:58 PM (10 years, 3 months ago)

Quote:

TheUnknownPoet said:
I'm building my second flowhood, a bit bigger than my first, and i'm wondering how small i can make the plenum.
In my last flowhood, i made the plenum 3 times as thick as the filter itself (18 inches) and this is too big and bulky. Can i get away with a 6 inch filter and a 6 inch plenum behind it, or will this not work? (This will allow me to have a thinner hood, and be able to put it on a countertop and such.)




"Glove boxes are considered "old tech". To retrofit a glovebox into a laminar flowhood, simply cut out the back panel, replace with similarly sized HEPA filter and build 6"-deep plenum behind the filter."
~Paul Stamets "Growing Gourmet & Medicinal mushrooms" (P.93, Figure 70.)


--------------------
Love.


Edited by Sagescruffy (10/28/13 02:00 PM)


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OfflineTheUnknownPoet
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Re: Plenum [Re: monoculture]
    #19046305 - 10/28/13 02:13 PM (10 years, 3 months ago)

so box should be twice as thick as the filter, and i put the filter and the space behind it is big enough for the plenum?


EDIT: a 6 inch plenum will work fine for a 6 inch filter, right?


Edited by TheUnknownPoet (10/28/13 02:15 PM)


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OfflineTheUnknownPoet
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Re: Plenum [Re: TheUnknownPoet]
    #19070124 - 11/01/13 02:16 PM (10 years, 2 months ago)

... right you guys?


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