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Offlinehckymstr19
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Registered: 06/04/16
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Flow Hood HEPA Filter Thickness
    #23317730 - 06/07/16 10:43 AM (8 years, 7 months ago)

Ok, before anyone starts to crucify me, I have done my research on flowhoods and filters and everyone talks abuot 6" filte depths. From what I understand, the goal is the get even pressure on the backside of the filter to provide laminar flow on the other side. As long as the filter is rated to filter properly (99.99% @.3microns), why does it matter what the filter thickness is.

As long as I have the correct fan blower to provide enough flow (100cfm) at the static pressure of both filters, why should it matter what the thickness of the filter is?

I ask because I am looking at this one online and it seems adequate - http://www.ebay.com/itm/Camfil-Farr-Megalam-HEPA-Filter-855027433-Q5-24-00-12-00-M-ZJ-V9-1B-00-0-/221912964959?hash=item33ab0b1f5f:g:Mq4AAOSwsB9V9HHS

Let me know guys. Thanks

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InvisibleInocuole
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Re: Flow Hood HEPA Filter Thickness [Re: hckymstr19]
    #23318106 - 06/07/16 01:03 PM (8 years, 7 months ago)

Uh, diffusion?


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Offlinehckymstr19
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Re: Flow Hood HEPA Filter Thickness [Re: Inocuole]
    #23318181 - 06/07/16 01:23 PM (8 years, 7 months ago)

Quote:

Inocuole said:
Uh, diffusion?




Umm OK, I know the definition of diffusion.  Can you elaborate more on how that answers my question?

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InvisiblebodhisattaMDiscordReddit
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Re: Flow Hood HEPA Filter Thickness [Re: hckymstr19]
    #23318414 - 06/07/16 02:45 PM (8 years, 7 months ago)

We've all just been fooled by the establishment. They're pushing the expensive 6" filters and we never knew better.

https://www.shroomery.org/forums/dosearch.php?where=body&tosearch=both&how=all&words=Thick+HEPA+&namebox=RogerRabbit&limit=25&sort=r&way=d

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Invisiblemaddchef
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Re: Flow Hood HEPA Filter Thickness [Re: bodhisatta]
    #23318587 - 06/07/16 03:36 PM (8 years, 7 months ago)

The thickness doesn't matter a bit. As long as it's rated right and you can match it and get laminar flow it wouldn't matter if the filter was 1/2in thick. It would have some kinda resistance and therefore require a beastly blower but you get the point.


--------------------
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Invisibleblackdust
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Re: Flow Hood HEPA Filter Thickness [Re: maddchef]
    #23318603 - 06/07/16 03:42 PM (8 years, 7 months ago)

i use this



:lolsy:

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Offlinehckymstr19
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Re: Flow Hood HEPA Filter Thickness [Re: maddchef]
    #23319015 - 06/07/16 06:04 PM (8 years, 7 months ago)

Quote:

maddchef said:
The thickness doesn't matter a bit. As long as it's rated right and you can match it and get laminar flow it wouldn't matter if the filter was 1/2in thick. It would have some kinda resistance and therefore require a beastly blower but you get the point.




OK that's exactly what I thought but everything I searched said 6".  No one talked about possibly using something thinner.  Thanks

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InvisibleInocuole
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Re: Flow Hood HEPA Filter Thickness [Re: hckymstr19]
    #23319156 - 06/07/16 06:47 PM (8 years, 7 months ago)

I like how you get 2 answers that conflict and cling to the one you want to hear..


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                            :rainbowdrink: Tea doesn't work?                            AMU  (Q & A)                  Grain prep for Intergalactic Space Oats :pes:     

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Invisiblemaddchef
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Re: Flow Hood HEPA Filter Thickness [Re: Inocuole]
    #23319334 - 06/07/16 07:34 PM (8 years, 7 months ago)

I mean you can get laminar flow with a 12in but it has much less resistance so you have to pump a larger volume of air through it. Then I'm not totally sure it would be laminar though. Ionno man my filter is smaller than 6in I think and it's a ULPA


--------------------
In the land of the blind, the one eyed man is king.

All mushrooms are edible, but some only once.....                     

                                        Easier than cakes

I do science and shit.

:havesomescience:

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Offlinehckymstr19
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Re: Flow Hood HEPA Filter Thickness [Re: Inocuole] * 1
    #23319394 - 06/07/16 07:51 PM (8 years, 7 months ago)

Quote:

Inocuole said:
I like how you get 2 answers that conflict and cling to the one you want to hear..




Dude I'm on her asking a question to get an educational answer,  you responded with two words that didn't help me at all.  Maybe if you posted something explaining yourself then it would be fine but "uh,  diffusion?" was useless.

And I quoted the one that applied to what I was thinking after I clicked the link in the post prior which I found someone that made a flow hood using a 3" filter and it had many members approval. 

https://www.shroomery.org/forums/showflat.php/Cat/0/Number/5569636/page/0/fpart/all/vc/1
This coming from trusted cultivators by the way.

So please,  I'm hear to learn as much as I can and I don't appreciate demeaning responses

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Invisibleblackdust
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Re: Flow Hood HEPA Filter Thickness [Re: hckymstr19]
    #23319406 - 06/07/16 07:58 PM (8 years, 7 months ago)


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Offlinesauroman1
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Re: Flow Hood HEPA Filter Thickness [Re: hckymstr19]
    #27006244 - 10/27/20 12:20 PM (4 years, 2 months ago)

I think what he meant or at least I think so is that HEPA filters can trap even smaller particle sizes than 0.3 micron by effect called diffusion which actually allows to stop even some tiny viruses. But only virii mold spores as RR mentioned are smaller that this.

Another important thing is to create laminar flow because stirring up air will just cause contams.
I'm why I can't find any LFH made from air purifiers? Could I convert my BAP412 to work with long box to reduce air stirring?

New generation air purifiers don't even use anymore HEPA filters and can achieve even greater cleaning efficiencies of particles 1000 times smaller.


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InvisibleStipe-n CapMDiscord
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Re: Flow Hood HEPA Filter Thickness [Re: sauroman1]
    #27006406 - 10/27/20 01:51 PM (4 years, 2 months ago)

You replied to a 4 year old comment.

And now I'm replying to you:facepalm:

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Offlinesauroman1
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Registered: 03/22/14
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Re: Flow Hood HEPA Filter Thickness [Re: Stipe-n Cap]
    #27008228 - 10/28/20 11:58 AM (4 years, 2 months ago)

So what? Better have given some valuable advice...


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"You come from realms of unimaginable power and light, and you will return to those realms.” ― Terence McKenna

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