
FlOw j0Bs anD chEap bLows...questions [merged]
#1
Posted 28 October 2006 - 10:56 PM
The filters are:
12 x 24 x 5-7/8 (99.99% HEPA wood)
and
24 x 30 x 5-7/8 (99.99% HEPA wood)
Here's some questions for y'all lovelies
What are the appropriate cfm blowers for these two sizes?
How much deeper do the boxes need to be than the filter?- Can the boxes be just big enough for the filters and deep enough for the output of the blower to come in, or does the size of the boxes need to be any specific ratio to acheive laminar flow?
Any good leads on a cheap source of blowers?-Should i just look for a local store, or can anyone recomend a real cheap source online or mailorder?
What is the best filter to use as a prefilter?
Thanks so much, as always, for helping me. You delish' people blow my mind at a high frequency with your lovely blossoming knowledge and devotional sporebanks of goodness.
BiGGEst huGS- yer friEnd anD serVANt >>nAscAR deNDriTE duDLEy
#2
Posted 28 October 2006 - 11:13 PM
#3
Posted 28 October 2006 - 11:16 PM
Mods, sorry about that, can you delete that extra post of this subject?
BiGhuGS- yer friEnd >>nAscAR deNDriTE duDLEy
#4
Posted 29 October 2006 - 07:50 AM
Check this one, hope it helps http://archives.myco...l?1069556827#MT
#5
Posted 29 October 2006 - 08:31 AM
And> any sources of cheap blowers that yall can recomend?
Sandman? -or any of you hood-lums.
>> can you give me any help in the "hood"?
-- yer friEnd and ServaNt, nAscAR denDriTE duDLEy
#6
Guest_CoyoteMesc_*
Posted 29 October 2006 - 09:35 AM
Depth of filter placement in the hood maybe?
I would guess that it does not matter as long as the cfm is correct when i reaches your project.
#7
Posted 29 October 2006 - 09:41 AM
dunno what the minimum might be
but the weight of the blower kinda requires some width on the base
to balance so i'd say about 1 foot from front to back of the shell
is fairly close to a minimum.
#8
Posted 29 October 2006 - 10:31 PM
Oh shit, my caps!
Thanks yall. Still no recomendations for a cheap source?
>> nD duDLEy
#9
Posted 04 November 2006 - 02:36 AM
I have read that a 460-480 CFm blower is O.K. for the 12/24 inch hepa.
I this math correct for the 30/24 inch hepa?
24 (2 feet) * 30 (2.5 feet) =5 ft2
150 ft/min * 5 ft2 = 725 ft3
So, is it corect to say that at the static pressure of the filter and pre filter, the blower must provide 725 CFM?
How do i find the static pressure of my filters? That info does not appear to be included on it's data sticker.
Hugs>>
naScar denDriTE duDLey
#10
Posted 04 November 2006 - 12:53 PM
#11
Posted 05 November 2006 - 01:43 AM
Any hints on what CFM the blower needs to be for my 24/30 inch hepa?
Any confirmation of the rate being 100 or 150 cubic feet per minute?
> nD duDLEy
#12
Guest_cap_*
Posted 05 November 2006 - 09:12 AM
hey dudley,100 used to be the standard, but I believe that now Stamets recomends 150. Am i wrong? I would like to believe so, because then my blower can be a third less powerfull/ heavy/ costly.
Any hints on what CFM the blower needs to be for my 24/30 inch hepa?
Any confirmation of the rate being 100 or 150 cubic feet per minute?
> nD duDLEy
if all else fails you can just ask what size blowers they are using in the flowhoods he sells @ fungi perfecti
contact
By Mail
Fungi Perfecti
PO Box 7634
Olympia, WA 98507
USA
By Phone
Order Line (toll free in the US & Canada): 800 780 9126
Phone: 360 426 9292
Fax: 360 426 9377
By Email
[email protected]
Hours of Operation
Monday through Friday, 8:30am–4:30pm Pacific Time
#13
Posted 05 November 2006 - 10:03 AM
#14
Posted 11 November 2006 - 08:23 PM
Allright. I promise i will stop bothering yall with my flowhood questions very soon. Don't beat me up...
Two flowhoods are being constructed.
One filter is 12/24/6 99.99 % HEPA
One filter is 34/30/6 99.99 % HEPA
I belive that the blower needed for the 12/24 should be between 450-500 cfm @ 1.2 s.p.
and
I the blower needed for the 24/30 should be between 800-1000 cfm @ 1.2 s.p.
Does this sound right?
I found a seller of refurb/ salvaged blowers and he told me that he would recomend a 1/5Hp blower for the 400-500 cfm, and a 1/3 Hp blower for the 800-1000. He mentioned that the motors on the blowers have 3 taps on the winding that select the hp rating of the motor and of course the speed of rotation. Seller said he can send me both for $170 including shipping.
Do these sound good to you guys?
#15
Guest_MycoGod_*
Posted 11 November 2006 - 09:46 PM
#16
Posted 11 November 2006 - 10:20 PM
Second, 34/30 is a HUGE filter. Total overkill for a single cultivator, IMHO.
12/24 is still large and would probably be exacly what you are looking for.
My FOAF works with a 12/12 and is quite happy.
Can't give you any advice on exactly what size motor to buy. My FOAF uses a big one that has true rheostat for speed variance.
#17
Posted 11 November 2006 - 10:22 PM
Not a 34/30 but infact
24/30
w0Ops
#18
Posted 11 November 2006 - 10:26 PM
What makes you think he uses a light dimmer?
Any other source you guys would recomend? None of the supply houses in my area carry these.
BigGest hUgS>> yeR FRIEND, NASCAR DENDRITE dUDley
#19
Posted 11 November 2006 - 10:32 PM
#20
Posted 11 November 2006 - 10:49 PM
hUgs to Yer CoRteX mEga soCket sPlaSheR0O>>
yer friend nAscAr denDRIte dudLEy