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InvisibleMycoCakeEater
Old Hand
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Registered: 06/16/03
Posts: 1,572
148cfm Fan
    #5497290 - 04/09/06 05:48 PM (17 years, 9 months ago)

Would a Dayton 148cfm Squirrel Cage Fan be strong enough for a flowhood?

Help appriciated. Thanks.


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Invisiblemusher_420
Stranger

Registered: 08/01/05
Posts: 2,691
Re: 148cfm Fan [Re: MycoCakeEater]
    #5497324 - 04/09/06 05:59 PM (17 years, 9 months ago)

Not sure about the fan. But here is a link FULL of great info on flow hoods. I'm probably making one soon too so we shall see how it works out.

http://www.fungifun.org/English/Flowhood


--------------------
My Humidifier Reservoir Expansion Tek

Must read links for beginners

Btw- You are not what you own!


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Invisibletrauma47645
The MushroomKing
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Registered: 02/09/06
Posts: 771
Loc: Somewhere in this place c...
Re: 148cfm Fan [Re: musher_420]
    #5497338 - 04/09/06 06:04 PM (17 years, 9 months ago)

148 cfm? that is a strong fan.. that might be overkill unless you are building a pretty big flowhood im talking like 20cfm or so (which would be like 2 x 2 x 5 ft) you really only need to be able to circulate the air like once a min for it to be effective and that has to be through a hepa filter


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Invisiblemusher_420
Stranger

Registered: 08/01/05
Posts: 2,691
Re: 148cfm Fan [Re: musher_420]
    #5497343 - 04/09/06 06:09 PM (17 years, 9 months ago)

This is from that link:

1. Find out the area of your filter by multiplying the width and the hight in feet (for instance the smallest reasonably usable filter would be 2ft x 1ft)


2ft x 1ft = 2 ft2

2. Multiply the required air speed(the one Stamets specifies, 100 ft/min) with the area of your filter


100 ft/min x 2 ft2 = 200 ft3/min

So 200 ft3/min(= cfm = "cubic feet per minute") is the amount of air your blower must deliver at the sum of the STATIC PRESSURE of the HEPA filter + prefilter.


NOTE: 1 cfm= 1.7m3/h


So if you use the above filter with 1"(250Pa) static pressure and a furnace prefilter with a static pressure of 0.2"(50Pa) your blower must deliver 200 cfm(340m3/h) of air at a static pressure of 1.2"(300Pa).


--------------------
My Humidifier Reservoir Expansion Tek

Must read links for beginners

Btw- You are not what you own!


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