Home | Community | Message Board


This site includes paid links. Please support our sponsors.


Welcome to the Shroomery Message Board! You are experiencing a small sample of what the site has to offer. Please login or register to post messages and view our exclusive members-only content. You'll gain access to additional forums, file attachments, board customizations, encrypted private messages, and much more!

Shop: Myyco.com Golden Teacher Liquid Culture For Sale   PhytoExtractum Buy Bali Kratom Powder, Maeng Da Thai Kratom Leaf Powder

Jump to first unread post Pages: 1
Some of these posts are very old and might contain outdated information. You may wish to search for newer posts instead.
Offlinexerox
Milk Burgers

Registered: 06/01/14
Posts: 2
Last seen: 9 years, 1 month
Hepa > Blower~Specific matching~24x24x12 & 6ft airstream
    #21338253 - 02/27/15 12:46 PM (9 years, 2 months ago)

Ive looked at other posts and I want to be certain my decision is correct. From what Im gathering, I need a 350cfm~600cfm squirrel cage fan.

Q1: What cfm do I need?
Q2: Is there a such thing as too much cfm?
Q3: Would you mind linking to a prefilter that would be good?
Q4: What is W.G.?

Outside Links:
How do I match a blower to a HEPA filter

The Control:

Astrocell I
Hepa Filter measures 24"x24"x11.5"
Penetration (.016) % Pen. @ 20% (.023) %
Resistance (.9) W.G.
Test Flow 1000 CFM

Workspace dimensions: 2'x 6~8'
Flush against wall on one 2' side.
Flowhood may be on either side of table.

Variables:

~If the flowhood is flush with the wall, I lose 2 feet of workspace.
~If the flowhood is on the otherside, I may get air bouncing off back wall.

Conclusion:

After reading others' trial and error, I have concluded that a 365 cfm squirrel cage blower for around $30 that will limit the workspace to directly in front of the flowhood. After reading the link specified above, I have concluded that Im not as good at math as I first thought I was.

Quote:

1. Find out the area of your filter by multiplying the width and the hight in feet (for instance the smallest reasonably usable filter would be 2ft x 1ft)




    2ft x 2ft = 4 ft2

Quote:

2. Multiply the required air speed(the one Stamets specifies) with the area of your filter




    100 ft/min x 4 ft2 = 400 ft3/min

That is as far as I could make it. I dont speak english!

Thank you all for your assistance!

Edited by xerox (02/27/15 01:02 PM)

Extras: Filter Print Post Top
InvisiblePirateSwazey
 User Gallery

Registered: 12/12/12
Posts: 2,993
Loc: Here, Now
Trusted Cultivator
Re: Hepa > Blower~Specific matching~24x24x12 & 6ft airstream [Re: xerox]
    #21341142 - 02/28/15 12:32 AM (9 years, 2 months ago)

You need a blower that will push 400cfm @ .9" of WG, if you don't use a pre-filter.

Most pre-filters have .2" of SP so it would be safe to get a blower that moves 400CFM @ 1.2" WG when adding one.

W.G. = water gauge (same as SP or static pressure), it is basically a measurement for resistance.

Blowers are rated for output at different levels of WG, so it is important to find a blower that moves
the amount of air you need at the sum of your HEPA filter & pre-filter's static pressure (W.G.)

If you overshoot the CFM a bit you can regulate it by either choking the fan (blocking some of the intake)
or by adding a speed controller.

http://www.shroomery.org/forums/showflat.php/Number/19798444/fpart/1/vc/1

^ link to my flowhood thread -- it might help you a bit :thumbup:


--------------------
 

BULK RYE PREP  -  MY FAVORITE THREADS  -  BUILD A FLOWHOOD


Extras: Filter Print Post Top
Offlinexerox
Milk Burgers


Registered: 06/01/14
Posts: 2
Last seen: 9 years, 1 month
Re: Hepa > Blower~Specific matching~24x24x12 & 6ft airstream [Re: PirateSwazey]
    #21341716 - 02/28/15 06:51 AM (9 years, 2 months ago)

your tutorial is an excellent essay! Thank you!! Very concise! Perfect!

Extras: Filter Print Post Top
Jump to top Pages: 1

Shop: Myyco.com Golden Teacher Liquid Culture For Sale   PhytoExtractum Buy Bali Kratom Powder, Maeng Da Thai Kratom Leaf Powder


Similar ThreadsPosterViewsRepliesLast post
* HEPA filter/Blower Match? Silllo 2,185 10 04/05/07 06:13 AM
by Silllo
* hepa filter coming_up_roses 1,017 4 02/28/03 06:45 PM
by igore
* 24x24x12 Hepa
( 1 2 all )
NewFungiGrower 4,222 31 11/03/06 11:12 AM
by BIGSWANG
* Flowhood Questions- Matching filters and blowers ShroomNoob03 1,726 3 06/03/06 03:57 AM
by Brainiac
* blower for my HEPA filter, PLEASE HELP!!! FGL 2,445 13 10/09/05 02:35 PM
by Prisoner#1
* flow hoods matching blower with filter is this right? greenshaman 5,191 10 04/22/18 09:08 AM
by bodhisatta
* Good prices on blowers for flowhood(need input though,might be too powerful eclipse 1,516 7 10/06/06 08:58 PM
by eclipse
* what is a hepa filter and where can i buy one? Ogla 943 6 03/31/07 11:05 PM
by agar

Extra information
You cannot start new topics / You cannot reply to topics
HTML is disabled / BBCode is enabled
Moderator: Shroomism, george castanza, RogerRabbit, veggie, mushboy, fahtster, LogicaL Chaos, 13shrooms, Stipe-n Cap, Pastywhyte, bodhisatta, Tormato, Land Trout, A.k.a
595 topic views. 8 members, 74 guests and 32 web crawlers are browsing this forum.
[ Show Images Only | Sort by Score | Print Topic ]
Search this thread:

Copyright 1997-2024 Mind Media. Some rights reserved.

Generated in 0.025 seconds spending 0.009 seconds on 14 queries.