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Yuri.Pono
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who wants a flowhood?
#19383993 - 01/07/14 05:44 PM (10 years, 23 days ago) |
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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.
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Edited by Yuri.Pono (01/07/14 05:56 PM)
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Yuri.Pono
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19406066 - 01/11/14 10:16 PM (10 years, 19 days ago) |
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my filter is in route
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cronicr



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Re: who wants a flowhood? [Re: Yuri.Pono]
#19406079 - 01/11/14 10:24 PM (10 years, 19 days ago) |
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--------------------
  It doesn't matter what i think of you...all that matters is clean spawn I'm tired do me a favor
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Yuri.Pono
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Re: who wants a flowhood? [Re: cronicr]
#19414289 - 01/13/14 08:29 PM (10 years, 17 days ago) |
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vikingsc
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19414419 - 01/13/14 08:53 PM (10 years, 17 days ago) |
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I wouldn't get a dark room. If you got a clear cheap plastic greenhouse it could double as a grow room.
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vikingsc
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Re: who wants a flowhood? [Re: vikingsc]
#19414426 - 01/13/14 08:54 PM (10 years, 17 days ago) |
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Which size filter did you order?
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Yuri.Pono
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Re: who wants a flowhood? [Re: vikingsc]
#19414447 - 01/13/14 08:58 PM (10 years, 17 days ago) |
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24 x 24 x 11.5 couldnt pass up the deal
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vikingsc
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19414461 - 01/13/14 09:00 PM (10 years, 17 days ago) |
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That was probably the right. Should make an easier build too. Check Kijiji for a blower. Even if you have to buy a cheap used furnace and yank the blower out of it.
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Yuri.Pono
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Re: who wants a flowhood? [Re: vikingsc]
#19427447 - 01/16/14 11:04 AM (10 years, 15 days ago) |
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Yuri.Pono
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19427481 - 01/16/14 11:12 AM (10 years, 15 days ago) |
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does all blowers have this?
Quote:
*1: California Proposition 65 This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. *2: California Proposition 65 This product contains a chemical known to the State of California to cause cancer.
http://www.zorotools.com/g/00011669/k-1TDR7/
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Yuri.Pono
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19427490 - 01/16/14 11:15 AM (10 years, 15 days ago) |
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plan on doing this write up
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bodhisatta 
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19427597 - 01/16/14 11:45 AM (10 years, 15 days ago) |
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I think everything ever made falls under prop 65. Nothing doesn't cause cancer in California.
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Yuri.Pono
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Re: who wants a flowhood? [Re: bodhisatta]
#19428365 - 01/16/14 02:22 PM (10 years, 14 days ago) |
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blower in route, and I got wood just not the type you build with!!!
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vikingsc
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19431580 - 01/17/14 01:35 AM (10 years, 14 days ago) |
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The part of the blower that they say that for is the noise dampening acoustic insulation that surrounds the case of the blower. A lot of blowers wouldn't have that so - no not all would say that. It's nothing to worry about though. Most high quality furnaces have to say the same thing.
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Yuri.Pono
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Re: who wants a flowhood? [Re: vikingsc]
#19432310 - 01/17/14 09:11 AM (10 years, 14 days ago) |
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Yuri.Pono
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19436852 - 01/18/14 08:53 AM (10 years, 13 days ago) |
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 GT ISOLATE
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Yuri.Pono
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19438181 - 01/18/14 02:42 PM (10 years, 12 days ago) |
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so looks like i messed up following someone else's tek and turns out the blower it's self doesn't hit the correct cfm @ sp " i could be wrong so apologies if i am. listening to someone else on this"
http://www.grainger.com/product/DAYTON-PSC-Blower-1TDR7
PSC Blower Wheel Dia. (In.)6-3/16 Wheel Width (In.)3 CFM @ 0.000-In. SP485 CFM @ 0.100-In. SP475 CFM @ 0.200-In. SP448 CFM @ 0.300-In. SP425 CFM @ 0.400-In. SP398 CFM @ 0.500-In. SP375 CFM @ 0.600-In. SP325 CFM @ 0.700-In. SP275 CFM @ 0.800-In. SP215
someone else told me i need a 450-600cfm @ 1.1"
im not sure how to figure this out but need to make sure it is correct. as the blower i ordered is gonna be here monday. hope i can return.
Edited by Yuri.Pono (01/18/14 03:34 PM)
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Yuri.Pono
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19438214 - 01/18/14 02:50 PM (10 years, 12 days ago) |
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my specs on hepa
99.9995 @ 1 or 2 sp pictures in a second
    
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vikingsc
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19438236 - 01/18/14 02:54 PM (10 years, 12 days ago) |
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An 11.5" hepa filter is definitely gonna cause a lot of Static Pressure. Not sure if it's 1.1", but that sounds right or even more possibly for an 11.5" wide one. Check the filter see if tells you or perhaps. How much static pressure for an 11.5" hepa.
Sorry if this doesn't help much.
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Yuri.Pono
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Re: who wants a flowhood? [Re: vikingsc]
#19438253 - 01/18/14 02:56 PM (10 years, 12 days ago) |
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dont have any paper work and ask the dude over email about the effency rate 99.9995 @ 1 or 2 sp b4 i bought it
what exactly would i ask him if i where to email him
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Edited by Yuri.Pono (01/18/14 02:59 PM)
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vikingsc
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Re: who wants a flowhood? [Re: vikingsc]
#19438259 - 01/18/14 02:57 PM (10 years, 12 days ago) |
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So it looks like you'd be a 150 - 160 CFM.
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vikingsc
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Re: who wants a flowhood? [Re: vikingsc]
#19438292 - 01/18/14 03:03 PM (10 years, 12 days ago) |
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The hepa creates .9 inches of static pressure at 1000 CFM.
The blower list only goes up to .8 inches of static pressure. But the CFM decline is progressively going up. A 60 CFM decline from .7 to .8 so I would assume that it would be another 65 -75 CFM decline to .9 inches of static pressure. Making it around 140 - 150 CFM.
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Yuri.Pono
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Re: who wants a flowhood? [Re: vikingsc]
#19438302 - 01/18/14 03:05 PM (10 years, 12 days ago) |
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want my end finish to look like this just gonna cab mine in.
  
just found good info here hope i can figure this out http://www.shroomery.org/forums/showflat.php/Number/5569636/fpart/all/vc/1
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vikingsc
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19438331 - 01/18/14 03:11 PM (10 years, 12 days ago) |
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It wouldn't hurt to put some little side rails along the side of the table. Keeping all the air on it from around the hepa.
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Yuri.Pono
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19438333 - 01/18/14 03:11 PM (10 years, 12 days ago) |
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thanks for help. so i guess that is right on the 450-600cfm @ 1.1"
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vikingsc
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19438356 - 01/18/14 03:18 PM (10 years, 12 days ago) |
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I guess that's what you meant when said you were cab yours in.
I'm not sure what the minimums are, but your hepa provides .9 inches of static pressure. So if you work that out from the table they provide with the blower your finished flowhood will end up 140 - 150 CFM. Maybe RR or somebody would chime in if 140 - 150 cfm will be enough. I would think it'll still work ok, especially if you make it a bit of cabinet to work in.
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Yuri.Pono
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Re: who wants a flowhood? [Re: vikingsc]
#19438382 - 01/18/14 03:24 PM (10 years, 12 days ago) |
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ya more like a walk-in small closet.
thanks a bunch friend. glad i got someone to kinda steer me right and feel bad about the whole dude done his wrong if it's right was just listening to someone else that was saying it might not work for low sp
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Edited by Yuri.Pono (01/18/14 03:26 PM)
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vikingsc
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19438390 - 01/18/14 03:26 PM (10 years, 12 days ago) |
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Ohhh. I'd just semi close in a small work area |_|
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Yuri.Pono
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Re: who wants a flowhood? [Re: vikingsc]
#19438395 - 01/18/14 03:27 PM (10 years, 12 days ago) |
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good point
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Yuri.Pono
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19438439 - 01/18/14 03:40 PM (10 years, 12 days ago) |
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this is what i got from him on the email dont know if it matters
Quote:
HEPA Efficiencies - 99.97% and 99.99% minimum efficiency on 0.3 micrometer particles. ULPA Efficiency - 99.999% minimum efficiency of 0.3 micrometer particles and 99.9995% on 0.1 to 0.2 micrometer particles (11 1/2" deep only)."
think i was telling you right just making sure
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vikingsc
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19438464 - 01/18/14 03:46 PM (10 years, 12 days ago) |
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Quote:
Yuri.Pono said: this is what i got from him on the email dont know if it matters
Quote:
HEPA Efficiencies - 99.97% and 99.99% minimum efficiency on 0.3 micrometer particles. ULPA Efficiency - 99.999% minimum efficiency of 0.3 micrometer particles and 99.9995% on 0.1 to 0.2 micrometer particles (11 1/2" deep only)."
think i was telling you right just making sure
Ya that's not really the info you need. That's just the efficiency of the Hepa. Which is extremely efficient at filtering. Which also makes it difficult for airflow through it.
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Yuri.Pono
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Re: who wants a flowhood? [Re: vikingsc]
#19439814 - 01/18/14 09:16 PM (10 years, 12 days ago) |
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from here so im going to try to figure this out http://www.shroomery.org/forums/showflat.php/Number/5569636/fpart/all/vc/1
Quote:
ohmatic said:
Quote:
Brainiac said:
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 1ft = 2 ft2
2. Multiply the required air speed(the one Stamets specifies, 100 ft/min) with the area of your filter
100 ft/min x 2 ft2 = 200 ft3/min
So 200 ft3/min(= cfm = "cubic feet per minute") is the amount of air your blower must deliver at the sum of the STATIC PRESSURE of the HEPA filter + prefilter.
NOTE: 1 cfm= 1.7m3/h
So if you use the above filter with 1"(250Pa) static pressure and a furnace prefilter with a static pressure of 0.2"(50Pa) your blower must deliver 200 cfm(340m3/h) of air at a static pressure of 1.2"(300Pa).
Finding the correct blower Every blower should have a data sheet with a characterisitc curve that shows the air output in dependance of the static pressure. Every blower has a data sheet (consult the manufacturer if this is not the case with your blower) where the correlation between the flow and the static pressure is represented by a graph or table.
Here is such a set of curves for 4 blowers(numbered 1-4). NOTE: Each model of a blower has his own characteristical curve. This chart shows the curvers for 4 different particular models of axial duct blowers. What you can clearly see is that the bigger the static pressure the less air the blower delivers, up to the maximum static pressure where the air output is zero.
Edited by Yuri.Pono (01/18/14 09:44 PM)
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vikingsc
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19439853 - 01/18/14 09:29 PM (10 years, 12 days ago) |
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So since yours is 2' x 2' it sounds like stamets is saying that you would need 400 CFM at your filter's .9" Static Pressure. I guess that's the answer you didn't want. Sounds like the 140 - 150 CFM won't be enough.
You ordered your blower online? Maybe it hasn't shipped yet. Maybe you could get a hold of them and get a larger one sent instead?
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Yuri.Pono
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Re: who wants a flowhood? [Re: vikingsc]
#19439897 - 01/18/14 09:41 PM (10 years, 12 days ago) |
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it already at my hub hope they let me return
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Yuri.Pono
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19439909 - 01/18/14 09:44 PM (10 years, 12 days ago) |
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this is the math i figured up not understanding it one bit
so my filter is 24 x 24 x12
2ft * 2ft = 4 ft2
100 ft/min * 4 ft2 = 400 ft3/min
400 ft3/min * 1.7m3/h = 680 m3/h <<<don't understand what this means?
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Edited by Yuri.Pono (01/18/14 09:48 PM)
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vikingsc
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19439916 - 01/18/14 09:46 PM (10 years, 12 days ago) |
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Quote:
Yuri.Pono said: it already at my hub hope they let me return
I'm sure they will. Especially if your getting a larger one instead.
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vikingsc
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19439946 - 01/18/14 09:53 PM (10 years, 12 days ago) |
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Quote:
Yuri.Pono said: this is the math i figured up not understanding it one bit
so my filter is 24 x 24 x12
2ft * 2ft = 4 ft2
100 ft/min * 4 ft2 = 400 ft3/min
400 ft3/min * 1.7m3/h = 680 m3/h
Ya. You don't have to bother converting to m3/m and m3/h
The important part is the line: 100 ft/min * 4 ft2 = 400 ft3/min
Just make sure the blower you get does at least 400 CFM at .9" SP And if you decide to also add a regular 24" x 24" furnace filter in front of the hepa (just to protect and prolong the use of the filter) than you would want one that does the 400 CFM at 1.1" of Static Pressure.
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dirt dweller
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19440248 - 01/18/14 11:07 PM (10 years, 12 days ago) |
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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...............
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SpiralHaze
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19440271 - 01/18/14 11:15 PM (10 years, 12 days ago) |
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"So you need 400 cfm at whatever resistance you have. What resistance do you have? I'll tell you You filter is rated at 0.9"W.G@ 1000cfm. Well, if you pushed 1000 cfm through it, it would be blowing 250 fpm (1000 cfm / 4ft2=250 fpm) to find your actual working resistance, you need to find the relationship between 1000 cfm (what they tested at) and 400 cfm (what you will be using. 1000/400. 10/4. 5/2. That is the ratio of test resistance to use resistance. So; .9/1000 = x/400 .9 devided by 5 times 2 =.36 .9/1000=0.36/400 So what I am saying here is @ 100 fpm (400cfm) the resistance of this filter is 0.36" W.G add 0.2 for a prefilter and your total initial resistance is 0.56" W.G.g add your 20% (for clogging of the filter) and you are at 0.67" W.G. you are looking for a blower that produces 400 cfm@ .7" W.G.​ If any of this is confusing, tell me and I'll try to make it more clear"
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SpiralHaze
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Re: who wants a flowhood? [Re: SpiralHaze]
#19440282 - 01/18/14 11:18 PM (10 years, 12 days ago) |
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--------------------
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vikingsc
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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
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Re: who wants a flowhood? [Re: vikingsc]
#19441211 - 01/19/14 05:22 AM (10 years, 12 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
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Edited by Yuri.Pono (01/19/14 09:30 AM)
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Doc Seta
Sinister Das Trip Sober



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Re: who wants a flowhood? [Re: Yuri.Pono]
#19441691 - 01/19/14 09:21 AM (10 years, 12 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
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19446309 - 01/20/14 07:02 AM (10 years, 11 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
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RogerRabbit
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19446428 - 01/20/14 07:45 AM (10 years, 11 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
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thanks RR
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Yuri.Pono
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19446919 - 01/20/14 10:13 AM (10 years, 11 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.
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Yuri.Pono
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19467894 - 01/24/14 02:11 PM (10 years, 6 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
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Yuri.Pono
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19467903 - 01/24/14 02:12 PM (10 years, 6 days ago) |
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now time for wood, electrical supply, and my wifes mouth to take care of this boner.
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Fungal growth
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19468094 - 01/24/14 03:00 PM (10 years, 6 days ago) |
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Yuri.Pono
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getting close
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Yuri.Pono
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19520575 - 02/04/14 02:04 PM (9 years, 11 months 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
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Yuri.Pono
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19524321 - 02/05/14 09:14 AM (9 years, 11 months ago) |
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working on dialing it in
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MaJiK_420
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19525310 - 02/05/14 12:51 PM (9 years, 11 months ago) |
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Yuri.Pono
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Re: who wants a flowhood? [Re: MaJiK_420]
#19532093 - 02/06/14 06:22 PM (9 years, 11 months ago) |
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Edited by Yuri.Pono (02/06/14 06:23 PM)
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invitro


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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
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Re: who wants a flowhood? [Re: Yuri.Pono]
#19771523 - 03/31/14 01:09 AM (9 years, 9 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
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Re: who wants a flowhood? [Re: tombosley8]
#19825882 - 04/10/14 09:37 PM (9 years, 9 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.
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Edited by Yuri.Pono (04/10/14 09:45 PM)
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