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OfflineMichael_Ogic
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Registered: 09/07/04
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blower match
    #3125507 - 09/12/04 11:33 AM (13 years, 9 months ago)



what would be the best fan for a 24"x24"x12" at 0.7" WG ?

what would be the best fan for a 24"x12"x12" at 1.2" WG ?

thanks


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OfflineAnnoA
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Re: blower match [Re: Michael_Ogic]
    #3125551 - 09/12/04 12:06 PM (13 years, 9 months ago)

>what would be the best fan for a 24"x24"x12" at 0.7" WG ?
2ft X 2 ft x 100 ft/minute = 400 cfm
Blower: VTX1000

>what would be the best fan for a 24"x12"x12" at 1.2" WG ?
2ft X 1 ft x 100 ft/minute = 200 cfm
Blower: VTX800 is a bit overpowered, VTX600 largely underpowered.


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OfflineMichael_Ogic
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Registered: 09/07/04
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Re: blower match [Re: Anno]
    #3125591 - 09/12/04 12:31 PM (13 years, 9 months ago)

Is there a big difference between a 99,48 % eff and a 99,97% eff ?


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OfflineAnnoA
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Re: blower match [Re: Michael_Ogic]
    #3125604 - 09/12/04 12:37 PM (13 years, 9 months ago)

Well....

Let's say that one cubic meter of air has 10,000 particles smaller than 0,3 micrometer. (this is merely an assumption for this example.)

The 99,48% will let 52 particles pass through.
The 99,97% will let 3 particles pass through.

As you can see, the 99,97% is around 17 times more effective than the 99,48% .


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Offlinehyphae
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Re: blower match [Re: Michael_Ogic]
    #3125765 - 09/12/04 01:30 PM (13 years, 9 months ago)

Yes there is a big difference in our field MO even between 99.97% and 99.995% which is all I use, except for a Honeywell HEPA unit (99.97%) that runs contantly 24/7 in the room. Many people don't realize they're much better off using a glove box than working in front of a substandard HEPA introducing all that "semi cleaned" air. Just food for thought. :wink: I hope Anno's explaination has helped you understand what I've said to you before. GL MO


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Amazon Shop: HEPA Filter

Mushrooms, Mycology and Psychedelics >> Mushroom Cultivation

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