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OfflineGermanShaman
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Laminar Flow Hood Calculations - Adding extra Pre-filters
    #27208783 - 02/16/21 03:56 AM (3 years, 49 minutes ago)

I'm in the process of designing my Laminar Flow hood and I want to add some extra pre filters.

Being German we tend to over engineer things here!!

I want to add some additional course filters and a cheaper hepa filter BEFORE the air is sent into the pressure chamber.  I would like to know what adjustments I need to make to my fan calculations so that I choose a fan that is powerful enough.

The thinking is that whilst the fan may have to work harder to pull the air through the additional filters, I will be able to prolong the life of my main HEPA filter in the flowhood that produces the Laminar Flow of clean air.

I know this might sound like a bit overkill but I am German and we are known for our engineering!!!

Thank You Good People.


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InvisiblebodhisattaMDiscordReddit
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Re: Laminar Flow Hood Calculations - Adding extra Pre-filters [Re: GermanShaman]
    #27208800 - 02/16/21 04:22 AM (3 years, 23 minutes ago)

No adjustments just the same calcilations with the added resistance


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OfflineGermanShaman
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Re: Laminar Flow Hood Calculations - Adding extra Pre-filters [Re: bodhisatta]
    #27208903 - 02/16/21 06:53 AM (2 years, 11 months ago)

So do I just add the extra resistance of the pre filters into my calcs when choosing the fan?


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InvisiblebodhisattaMDiscordReddit
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Re: Laminar Flow Hood Calculations - Adding extra Pre-filters [Re: GermanShaman]
    #27209004 - 02/16/21 08:43 AM (2 years, 11 months ago)

Yes.


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Offlinemigraineur
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Re: Laminar Flow Hood Calculations - Adding extra Pre-filters [Re: GermanShaman]
    #27210694 - 02/17/21 07:54 AM (2 years, 11 months ago)

Na, GermanShaman.

Alles fit im Schritt?

I have the Series 1 flow hood from Fungi Perfecti. I bought some large air/furnace filters from Amazon, cut a piece off with scissors so it'd cover the air intake and then used gaffer tape to keep it in place

The filters I bought were Filtrete™ MPR 1500 Allergen, Bacteria & Virus Air Filters 16 * 30 * 1 inches. The packaging states that it lasts up to 3 months but I assume that is if you're taking in a large amount of air constantly. I've had my first piece on for years and I'll only change it once it starts to look dirty.


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Offlinedirtybirdx
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Re: Laminar Flow Hood Calculations - Adding extra Pre-filters [Re: bodhisatta]
    #27210759 - 02/17/21 08:47 AM (2 years, 11 months ago)

Quote:

GermanShaman said:
So do I just add the extra resistance of the pre filters into my calcs when choosing the fan?



Quote:

bodhisatta said:
Yes.




👍


--------------------
Need help?




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OfflineGermanShaman
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Re: Laminar Flow Hood Calculations - Adding extra Pre-filters [Re: migraineur]
    #27212308 - 02/18/21 02:04 AM (2 years, 11 months ago)

could you send me a link to those air furnace filters please.

Thanks


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InvisiblebodhisattaMDiscordReddit
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Re: Laminar Flow Hood Calculations - Adding extra Pre-filters [Re: GermanShaman]
    #27212356 - 02/18/21 04:29 AM (2 years, 11 months ago)

Google.com
filtrete 1500


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Offlinemigraineur
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Re: Laminar Flow Hood Calculations - Adding extra Pre-filters [Re: GermanShaman]
    #27212400 - 02/18/21 05:35 AM (2 years, 11 months ago)

Quote:

GermanShaman said:
could you send me a link to those air furnace filters please.

Thanks




https://www.filtrete.com/3M/en_US/filtrete/products/~/Filtrete-Products/?N=4315+3288870719+3294529207&preselect=3288776106+3294857497&rt=rud

The site can find retailers for you. I can't remember if I bought mine from Amazon or eBay.


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OfflineGermanShaman
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Re: Laminar Flow Hood Calculations - Adding extra Pre-filters [Re: migraineur]
    #27214980 - 02/19/21 02:25 PM (2 years, 11 months ago)

Thanks everyone.


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Offlinemigraineur
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Re: Laminar Flow Hood Calculations - Adding extra Pre-filters [Re: GermanShaman]
    #27218154 - 02/21/21 09:51 AM (2 years, 11 months ago)

Quote:

GermanShaman said:
Thanks everyone.




Kein problem, Mann.


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