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vikingsc
Mushroom Enthusiast



Registered: 01/11/12
Posts: 1,214
Loc: British Columbia, Canada
Last seen: 6 months, 7 days
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Quote:
dirt dweller said: I have been HVAC for along time now, and have used my talents for this hobby. I built a small flow hood similar to what you are try to achieve. If you drop by your local heating and cooling repair shop you should be able to get a 1-2 ton blower motor, housing and squril cage for a case of beer. Adjust the speed taps to the lowest speed and see how the flow is through the filter at 7-9" away from the face of the filter. A lighter should either not stay lit or see signs of flame lifting. I built my hood for about 50.00 not including the filter price. Hopes this helps if you have any questions hit me back. Dirt out...............
I've also been in HVAC for many years. Tinbashers unite!
Spiralhaze I was wondering if you'd have to change anything for the static pressure being tested at 1000 CFM.
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RogerRabbit
Bans for Pleasure



Registered: 03/26/03
Posts: 42,214
Loc: Seattle
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Re: who wants a flowhood? [Re: vikingsc]
#19441211 - 01/19/14 05:22 AM (10 years, 30 days ago) |
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If you don't know anything about flowhoods or HVAC, please listen and learn, but don't give bad advice. Every single post you've made above without exception is incorrect.
The filter was tested at 1000 cfm and at that rate of flow, the static pressure which developed was .9" W.G.
That is an 11" filter, which has less resistance than thinner filters. This is why we usually get 5" filters for flow hoods. It's hard to get laminar flow with much less than 1" W.G. of pressurized air in the plenum. Thicker filters were designed for clean room use where they need to pass much more air, thus they have less resistance, but more capacity to store filtered material. Thinner filters are designed for flow bench work. They're pressurized from behind so they'll deliver laminar airflow out the front. They have higher resistance to help with laminar flow and because they're thinner, less debris holding capability. (use a good prefilter)
The motor specs you posted above are not sufficient to operate this filter.
Build the flow hood, leaving at least 8" of free space behind the filter. This is the plenum where air from the blower will pressurize, thus placing an equal amount of air over the entire back surface of the filter. This helps to achieve laminar flow out the front.
You want about 450 to 500 cfm(cubic feet per minute, a measure of volume) blowing through the filter to get a speed of 100 to 125 fpm(feet per minute, a measure of air speed). I suspect with that filter, you'll achieve the desired flow with a resistance of around .5 or so. Find a 500 cfm blower at .5" to .7" W.G.
Place a lighter 2" away from the face of the filter. It should bend over about 45 to 60 degrees, but not flicker or go out. It should also blow over the same amount no matter where around the face the filter you place it. If there is too much flow, simply stack a couple of prefilters together to throttle it down or otherwise block off part of the intake. RR
-------------------- Download Let's Grow Mushrooms semper in excretia sumus solim profundum variat "I've never had a failed experiment. I've only discovered 10,000 methods which do not work." Thomas Edison
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Yuri.Pono
MAD SCIENTIST



Registered: 10/28/13
Posts: 279
Loc: SO HIGH O
Last seen: 9 years, 9 months
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-------------------- Links To Success finger print: A9E348E5 2A22AFB6 F3676613 A34B1454 7C36ABC8 want to chat? got xxmp/pidgin/otr PM me for info
Edited by Yuri.Pono (01/19/14 09:30 AM)
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Doc Seta
Sinister Das Trip Sober



Registered: 12/18/13
Posts: 550
Loc: Tunafish, Ocean
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19441691 - 01/19/14 09:21 AM (10 years, 29 days ago) |
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Quote:
Yuri.Pono said: I DO!!!
so im kinda researching just wondering how many folks have ordered their HEPA Filter from HERE?
was thinking maybe a 30 x 24 x 5-7/8 (99.99% HEPA wood) or 24 x 24 x 5-7/8 (99.99% HEPA wood)
reasoning is i want to g2g bags easily.
who is with me on this? just need help with the math on this. not the brightest bulb in the room when it comes to math.
so i suppose my 1st step is to order my filter and get the info off that to figure this out. just want to know if there is disadvantages of bigger hood other then weight. say expensive ass blower. which im good with.
I have a spot with thermal drapes, just reverse my ion hepa filter and flip a box on its side and shazzam 0 contams, screw paying $500.
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Yuri.Pono
MAD SCIENTIST



Registered: 10/28/13
Posts: 279
Loc: SO HIGH O
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19446309 - 01/20/14 07:02 AM (10 years, 29 days ago) |
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Quote:
Yuri.Pono said: zoro tools 1TDT8
http://www.grainger.com/product/DAYTON-PSC-Blower-1TDT8
think this is the correct one
BUMP
would this be the correct blower
-------------------- Links To Success finger print: A9E348E5 2A22AFB6 F3676613 A34B1454 7C36ABC8 want to chat? got xxmp/pidgin/otr PM me for info
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RogerRabbit
Bans for Pleasure



Registered: 03/26/03
Posts: 42,214
Loc: Seattle
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19446428 - 01/20/14 07:45 AM (10 years, 29 days ago) |
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Yes. It will probably be sufficient wired on low speed. RR
-------------------- Download Let's Grow Mushrooms semper in excretia sumus solim profundum variat "I've never had a failed experiment. I've only discovered 10,000 methods which do not work." Thomas Edison
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Yuri.Pono
MAD SCIENTIST



Registered: 10/28/13
Posts: 279
Loc: SO HIGH O
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thanks RR
-------------------- Links To Success finger print: A9E348E5 2A22AFB6 F3676613 A34B1454 7C36ABC8 want to chat? got xxmp/pidgin/otr PM me for info
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Yuri.Pono
MAD SCIENTIST



Registered: 10/28/13
Posts: 279
Loc: SO HIGH O
Last seen: 9 years, 9 months
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19446919 - 01/20/14 10:13 AM (10 years, 28 days ago) |
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thank god for 30 returns. able to return it and just ordered correct blower
looks like this project will be finished as planned by the end of the week.
-------------------- Links To Success finger print: A9E348E5 2A22AFB6 F3676613 A34B1454 7C36ABC8 want to chat? got xxmp/pidgin/otr PM me for info
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Yuri.Pono
MAD SCIENTIST



Registered: 10/28/13
Posts: 279
Loc: SO HIGH O
Last seen: 9 years, 9 months
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19467894 - 01/24/14 02:11 PM (10 years, 24 days ago) |
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FINALLY!!!!!! my damn blower made it after getting the wrong one then they shipped the new one to the other side of town wrong address, and final i got this BITCH
-------------------- Links To Success finger print: A9E348E5 2A22AFB6 F3676613 A34B1454 7C36ABC8 want to chat? got xxmp/pidgin/otr PM me for info
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Yuri.Pono
MAD SCIENTIST



Registered: 10/28/13
Posts: 279
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Last seen: 9 years, 9 months
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19467903 - 01/24/14 02:12 PM (10 years, 24 days ago) |
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now time for wood, electrical supply, and my wifes mouth to take care of this boner.
-------------------- Links To Success finger print: A9E348E5 2A22AFB6 F3676613 A34B1454 7C36ABC8 want to chat? got xxmp/pidgin/otr PM me for info
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Fungal growth
Lootinint



Registered: 03/21/10
Posts: 3,641
Loc: under a rock in your yard
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19468094 - 01/24/14 03:00 PM (10 years, 24 days ago) |
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Yuri.Pono
MAD SCIENTIST



Registered: 10/28/13
Posts: 279
Loc: SO HIGH O
Last seen: 9 years, 9 months
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getting close
-------------------- Links To Success finger print: A9E348E5 2A22AFB6 F3676613 A34B1454 7C36ABC8 want to chat? got xxmp/pidgin/otr PM me for info
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Yuri.Pono
MAD SCIENTIST



Registered: 10/28/13
Posts: 279
Loc: SO HIGH O
Last seen: 9 years, 9 months
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19520575 - 02/04/14 02:04 PM (10 years, 13 days ago) |
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so flowhood is finished but now i have to dial in my blow as stated here http://www.shroomery.org/forums/showflat.php/Number/13851289
-------------------- Links To Success finger print: A9E348E5 2A22AFB6 F3676613 A34B1454 7C36ABC8 want to chat? got xxmp/pidgin/otr PM me for info
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Yuri.Pono
MAD SCIENTIST



Registered: 10/28/13
Posts: 279
Loc: SO HIGH O
Last seen: 9 years, 9 months
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19524321 - 02/05/14 09:14 AM (10 years, 12 days ago) |
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working on dialing it in
-------------------- Links To Success finger print: A9E348E5 2A22AFB6 F3676613 A34B1454 7C36ABC8 want to chat? got xxmp/pidgin/otr PM me for info
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MaJiK_420
...lost



Registered: 06/30/08
Posts: 447
Last seen: 6 years, 19 days
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19525310 - 02/05/14 12:51 PM (10 years, 12 days ago) |
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Yuri.Pono
MAD SCIENTIST



Registered: 10/28/13
Posts: 279
Loc: SO HIGH O
Last seen: 9 years, 9 months
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Re: who wants a flowhood? [Re: MaJiK_420]
#19532093 - 02/06/14 06:22 PM (10 years, 11 days ago) |
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-------------------- Links To Success finger print: A9E348E5 2A22AFB6 F3676613 A34B1454 7C36ABC8 want to chat? got xxmp/pidgin/otr PM me for info
Edited by Yuri.Pono (02/06/14 06:23 PM)
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invitro


Registered: 05/03/13
Posts: 2,529
Last seen: 2 months, 7 days
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Re: who wants a flowhood? [Re: Doc Seta]
#19729753 - 03/21/14 07:47 PM (9 years, 10 months ago) |
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Quote:
Doc Seta said:
Quote:
Yuri.Pono said: I DO!!!
so im kinda researching just wondering how many folks have ordered their HEPA Filter from HERE?
was thinking maybe a 30 x 24 x 5-7/8 (99.99% HEPA wood) or 24 x 24 x 5-7/8 (99.99% HEPA wood)
reasoning is i want to g2g bags easily.
who is with me on this? just need help with the math on this. not the brightest bulb in the room when it comes to math.
so i suppose my 1st step is to order my filter and get the info off that to figure this out. just want to know if there is disadvantages of bigger hood other then weight. say expensive ass blower. which im good with.
I have a spot with thermal drapes, just reverse my ion hepa filter and flip a box on its side and shazzam 0 contams, screw paying $500.
Could you elaborate? Do you have a link for your ion hepa filter? Pics please.
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tombosley8
Full on... Bossley Baggins



Registered: 10/14/13
Posts: 3,660
Last seen: 8 months, 17 days
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19771523 - 03/31/14 01:09 AM (9 years, 10 months ago) |
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so did this work out for you ok. Do you recommend i get the 6 inch filter instead of 12 or did that blower and filter work? will this work i can't find the micron efficiency on the one your referring to or this one but i like that this one is 30x30 and rated around the same cfm what do you think? http://www.ebay.com/itm/Hepa-Corp-Hepa-SEP-HE30WPUB-960-CFM-Filter-30-x-30-x-6-Great-Shape-/281201764311?pt=LH_DefaultDomain_0&hash=item4178ee67d7 So i just called hepa co. and was told this is 99.97% down to .3 microns. So i guess i'll go with another because i think i need 99.99, right? edit: well with more searching i think 99.97 is acceptable as long as it is to .3 microns. still not sure what the one you are using is except it says down to .23 microns which i think is at 99.97 (not sure).
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Edited by tombosley8 (04/01/14 06:13 PM)
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Yuri.Pono
MAD SCIENTIST



Registered: 10/28/13
Posts: 279
Loc: SO HIGH O
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Re: who wants a flowhood? [Re: tombosley8]
#19825882 - 04/10/14 09:37 PM (9 years, 10 months ago) |
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mine works great for me in fact i dont use the speed control either nor do i slow it down in anyway, im for sure not the person to ask for specs. as i needed much help from here.
-------------------- Links To Success finger print: A9E348E5 2A22AFB6 F3676613 A34B1454 7C36ABC8 want to chat? got xxmp/pidgin/otr PM me for info
Edited by Yuri.Pono (04/10/14 09:45 PM)
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