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North Spore Shop: Cultivation Supplies

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Flow hood (potential) filter.
    #26198410 -

https://i.imgur.com/L3oKNZn.jpg
https://i.imgur.com/KxDL9hu.jpg

I am in working on a Laminar flow hood design  and  got a great deal on a unused surplus 12"x 24"x 5 7/8" Halco HEPA 99.97% at .3 m and thought I had done my research, but specs on filter indicate static pressure .59 wg at 225 cfm. It is my understanding a minimum of 1 wg static pressure is required to achieve Laminar flow (with adequate blower fan at desired flow rate of 100 cfm). I am handy and can  build fb / wire fan,  but calculations and flow rates and static pressure are making my head spin.
Will this filter work to achieve Laminar flow?


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Extras: Filter Print Post Top
Re: Flow hood (potential) filter. [Re: ColoradoJo]
    #26198488 -

You can get laminar flow from .8 to over 1.1 Water Gauge (wg)..
It's best to run It 12 in. high and 24 in. wide.. It's good you got the 5.8 inch thick filter..
It'll be a nice unit for you If your just doing hobby level production..

Your going to want a blower that puts out more than 225 cfm and static pressure of .59

Graingers Is a good place to locate the blower you want (Dayton) they have specification so you can see if static pressure is adequate. 

Make sure your plenum is big enough..

If in doubt contact the supplier and ask about Laminar flow for that filter. He probably could suggest what blower to look at..
Don't forget to use a pre-filter...


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Extras: Filter Print Post Top
Re: Flow hood (potential) filter. [Re: micelio]
    #26198494 -

Here's a blower for your size filter..

You can find that blower for less on ebay or Amazon..

https://fungi.com/products/blower-549-cfm-free-air-delivery

https://fungi.com/collections/laboratory-equipment/products/the-series-i-laminar-flow-hood


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Edited by micelio (09/19/19 11:26 PM)

Extras: Filter Print Post Top
Re: Flow hood (potential) filter. [Re: micelio]
    #26198520 -

This Is the blower specs. for the 549 cfm.

https://www.grainger.com/product/DAYTON-Rectangular-Permanent-Split-1TDT2?cm_sp=Product_Details-_-Customer_Also_Viewed-_-AZIDPRR_P-DPO-77-091219&cm_vc=AZIDPRR_P-DPO-77-091219&req=Customer_Also_Viewed

ebay: https://www.ebay.com/itm/Dayton-Model-1TDT2-Blower-549-CFM-1640-RPM-115V-60-50hz/183693863138?epid=2255549070&hash=item2ac501e8e2:g:C7sAAOxy9dVTkfu9


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Edited by micelio (09/20/19 12:02 AM)

Extras: Filter Print Post Top
Re: Flow hood (potential) filter. [Re: micelio]
    #26198897 -

The new dimple pleated hepas specifically made for laminar flow applications have initial resistances under 0.6" w.g.


--------------------
Everything you need in one spot.

My Q&A thread. Ask me questions here rather than in Private Message
Bod's chat thread

5g a day keeps the 5g away

Extras: Filter Print Post Top
Re: Flow hood (potential) filter. [Re: bodhisatta]
    #26199218 -

Thanks That's good to know..

:thumbup:


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Extras: Filter Print Post Top
Re: Flow hood (potential) filter. [Re: micelio]
    #26199330 -

Thank you SO much!  I am a just a light hobbyist and an island of one in this journey (top secret hobby of a "suburban housewife" in  a desperate housewife land :smile:) so this forum and  the wise words of all  you fine folks give me hope to beat trich! Much gratitude for expertise!


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Extras: Filter Print Post Top
Re: Flow hood (potential) filter. [Re: ColoradoJo]
    #26199393 -

I always try to improve my sterile work habits..

This is a good read: https://mycotopia.net/topic/93548-an-aloha-medicinals-scholarship-month-log/


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Extras: Filter Print Post Top
Re: Flow hood (potential) filter. Update [Re: micelio]
    #26428728 -



Hi again. So I completed the build w/the blower motor/Hepa filter  recommended and have a  7 ish inch plenum. I did the lighter test and it fully blows out at 1-3 inches from filter face but bends at a lot 90 degrees at 3  inches.
I've read varying measurements for lighter test but before I start modifying the set up, wanted to clarify ideal scenario for flame test or criteria for fail.

Much gratitude!.(top filter removed for varnish drying.


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Extras: Filter Print Post Top
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North Spore Shop: Cultivation Supplies

Mushrooms, Mycology and Psychedelics > Mushroom Cultivation
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