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OfflineCapnZ
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Re: Flow Hood [Re: Tripping2Adventure]
    #24431472 - 06/24/17 11:54 AM (6 years, 7 months ago)

A lot depends on your design. You will need to make your plenum adequately sized in order to get even air pressure across the filter surface. Are you using prefilters? Need to factor that in also.


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Deep into the darkness peering, long I stood there wondering, fearing, doubting, dreaming dreams no mortal ever dared to dream before...


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OfflineCapnZ
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Re: Flow Hood [Re: bodhisatta]
    #24431862 - 06/24/17 02:12 PM (6 years, 7 months ago)

Quote:

bodhisatta said:
He said he was using prefilters lol

Everything looks good with your math to me



Oops. Missed the prefilter info, but it doesn't look like I was the only one who missed something! Thanks Bod. :rofl:


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Deep into the darkness peering, long I stood there wondering, fearing, doubting, dreaming dreams no mortal ever dared to dream before...


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OfflineCapnZ
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Re: Flow Hood [Re: CapnZ]
    #24431870 - 06/24/17 02:15 PM (6 years, 7 months ago)

I have a Dayton blower in mine too. 1 TDT2 (smaller filter than yours). Works great and pretty quiet,


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Deep into the darkness peering, long I stood there wondering, fearing, doubting, dreaming dreams no mortal ever dared to dream before...


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OfflineCapnZ
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Re: Flow Hood [Re: bodhisatta]
    #24431993 - 06/24/17 03:12 PM (6 years, 7 months ago)

Quote:

bodhisatta said:
the plenum doesn't need a special design it just has to be big enough to put even pressure over the back of the filter.

more people have home made flow hoods than bought ones on this site :shrug:



:whathesaid:

I did this to my plenum. It's a trick I picked up from a guy with yards of HVAC experience. They charge bib bucks to install something like this in your home HVAC ductwork. It does improve airflow efficiency and minimizes turbulence. This is a pic from the build. The white material is styrene but any bendable plastic or vinyl sheet that's not too flimsy will do.



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OfflineCapnZ
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Re: Flow Hood [Re: bodhisatta]
    #24433841 - 06/25/17 08:46 AM (6 years, 7 months ago)

Quote:

bodhisatta said:
because the filter is being pushed towards the lab so the weather strip seals the filter to the front of the hood you build that way.



:whathesaid:
The static air pressure forces your filter forward creating a seal against the weather stripping.


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