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OfflineSimper
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Registered: 06/08/15
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Last seen: 8 years, 5 months
laminar flow hood questions
    #21795625 - 06/12/15 12:49 AM (8 years, 7 months ago)

Hi everyone,
I'm new to here, but glad I made it.

My FOAF bought a squirrel cage fan that is 1/3 hp and runs at 1075 rpms. Does anyone know how many cfm this huge thing can push? Is it pretty realistic to think this blower can handle a 2'x2'x6" 99.99% filter for a laminar flow hood? If so where should they purchase. Fungifun has a large list of sites, almost all won't quote until all personal information is entered. A lot if the sites sell 24x24x3 filters. She was thinking maybe tridim or earthstongue. What are your guys thoughts on the whole situation?

Blower:
5kcp39hg p968bs
1/3 hp
Rpm1075
A 5.2
Cpnb13400-21
Thanks everyone!


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Invisiblemaddchef
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Re: laminar flow hood questions [Re: Simper]
    #21797627 - 06/12/15 01:43 PM (8 years, 7 months ago)

We can't help you with that blower likely. We don't know if it has forward, rear, or straight fan blades.


--------------------
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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OfflineSimper
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Re: laminar flow hood questions [Re: maddchef]
    #21798658 - 06/12/15 05:25 PM (8 years, 7 months ago)

Thanks for the response Mad.
How do you figure that out? They're probably forward.


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OfflineSimper
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Re: laminar flow hood questions [Re: Simper]
    #21798665 - 06/12/15 05:27 PM (8 years, 7 months ago)

Nvm about that. Where should they purchase there filter? Has anyone bought a filter from earthstongue?


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Invisiblemaddchef
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Re: laminar flow hood questions [Re: Simper]
    #21798938 - 06/12/15 06:22 PM (8 years, 7 months ago)

You can't just go buy a filter if you don't know your fan specs. I mean technically you could but it would be a lot of work dialing it in


--------------------
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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OfflineJenn
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Re: laminar flow hood questions [Re: maddchef]
    #21802353 - 06/13/15 12:23 PM (8 years, 7 months ago)

www.fungi.com


You may call them.  The guy who builds their flow hoods is super helpful.  He will tell you what to purchase.


--------------------
Sit down before fact as a little child, be prepared to give up every preconceived notion, follow humbly wherever and to whatever abysses nature leads, or you shall learn nothing.


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OfflineGreen Bastard
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Re: laminar flow hood questions [Re: Jenn]
    #21802633 - 06/13/15 01:53 PM (8 years, 7 months ago)

^^^^
This!
Great folks there....


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OfflineSimper
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Re: laminar flow hood questions [Re: Green Bastard]
    #21805011 - 06/14/15 05:40 AM (8 years, 7 months ago)

Great to hear, will they recommend their filters only?


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OfflineJenn
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Re: laminar flow hood questions [Re: Simper]
    #21808886 - 06/15/15 12:18 AM (8 years, 7 months ago)

I'm not sure.  I recently bought an AA75 and a series two flow hood and they did me right.  The level of help they give you in this and other areas is worth the money alone.  They are cool folks.


--------------------
Sit down before fact as a little child, be prepared to give up every preconceived notion, follow humbly wherever and to whatever abysses nature leads, or you shall learn nothing.


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OfflineJenn
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Re: laminar flow hood questions [Re: Jenn]
    #21808890 - 06/15/15 12:19 AM (8 years, 7 months ago)

I also really like the people at mycosupply.  They are very good.  D


--------------------
Sit down before fact as a little child, be prepared to give up every preconceived notion, follow humbly wherever and to whatever abysses nature leads, or you shall learn nothing.


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OfflineSimper
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Re: laminar flow hood questions [Re: Jenn]
    #21809129 - 06/15/15 02:54 AM (8 years, 7 months ago)

Thanks Jen,
I will like into that places as well.
Foaf, is building their own.
They seem to be settling on a filter from earths tongue. They haven't ordered yet.


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Invisible36fuckin5
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Re: laminar flow hood questions [Re: Simper]
    #21810578 - 06/15/15 12:26 PM (8 years, 7 months ago)

You're not gonna have any good results when you don't know the output of your fan. Find that first. Call the company who made it if you need to.


--------------------
Redd Foxx said:
If you're offended I don't give a shit and don't come see me no more.

Pat The Bunny said:
A punk rock song won't ever change the world, but I can tell you about a couple that changed me.

bodhisatta said:
i recommend common sense and figuring it out.

These are the TEKs I use. They're all as cheap and easy as possible, just like your mom.


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OfflineSimper
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Re: laminar flow hood questions [Re: 36fuckin5]
    #21813025 - 06/15/15 11:43 PM (8 years, 7 months ago)

Really, why is that 36?

Can't you just tune it in after you build it?

Those are good suggestions. What should be asked else than what the cfm out put is?


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Invisiblemaddchef
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Re: laminar flow hood questions [Re: Simper]
    #21813606 - 06/16/15 07:26 AM (8 years, 7 months ago)

The cfm output under load such as @1sp


--------------------
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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OfflineSimper
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Re: laminar flow hood questions [Re: maddchef]
    #21815674 - 06/16/15 05:27 PM (8 years, 7 months ago)

Ahhh yes of course, thanks mad chef.


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OfflineGr0wer
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Re: laminar flow hood questions [Re: Simper]
    #21819451 - 06/17/15 03:30 PM (8 years, 7 months ago)

Looking at the amps and hp Id be willing to guess the fan would be enough to push through a 2x2 filter if its anything close to this 1/4 hp Dayton squirrel cage blower. It may actually be on the big size yours being 1/3 hp but it also depends on the impeller and housing size. If its too large you can try to throttle it with a heavy duty dimmer.

http://m.grainger.com/mobile/product/DAYTON-Blower-1XJX8


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OfflineGr0wer
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Re: laminar flow hood questions [Re: Gr0wer]
    #21820315 - 06/17/15 07:05 PM (8 years, 7 months ago)

http://www.grainger.com/product/GENTEQ-Motor-6DLN6

found the motor, cant find the fan, check the housing for a second plate or part number


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OfflineSimper
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Re: laminar flow hood questions [Re: Gr0wer]
    #21822255 - 06/18/15 03:58 AM (8 years, 7 months ago)

Awe, thanks grow the best info yet. Thanks so much.


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OfflineSimper
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Re: laminar flow hood questions [Re: Simper]
    #21822257 - 06/18/15 03:59 AM (8 years, 7 months ago)

Will do not around it atm


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OfflineSimper
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Re: laminar flow hood questions [Re: Simper]
    #21824299 - 06/18/15 04:07 PM (8 years, 7 months ago)

GE was absolutely no help at all. All they did was transfer me to different people and finally they realized they sold the blower section of the company to a company called train.
Lol, they told me to search the yellow pages for a train service, when I am calling about information not service.


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Invisible36fuckin5
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Re: laminar flow hood questions [Re: Simper]
    #21824332 - 06/18/15 04:13 PM (8 years, 7 months ago)

Trane.


--------------------
Redd Foxx said:
If you're offended I don't give a shit and don't come see me no more.

Pat The Bunny said:
A punk rock song won't ever change the world, but I can tell you about a couple that changed me.

bodhisatta said:
i recommend common sense and figuring it out.

These are the TEKs I use. They're all as cheap and easy as possible, just like your mom.


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OfflineGr0wer
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Re: laminar flow hood questions [Re: 36fuckin5]
    #21829103 - 06/19/15 05:38 PM (8 years, 7 months ago)

All i keep finding is the motor, not sure if they make the blower housings or just the motors.

http://www.trane.com/commercial/uploads/pdf/10/tranesupply2013catalog.pdf


Edited by Gr0wer (06/19/15 05:38 PM)


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OfflineSimper
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Re: laminar flow hood questions [Re: Gr0wer]
    #21831340 - 06/20/15 05:20 AM (8 years, 7 months ago)

There isn't a model number on the housing or an marks at all.

The only other number is on what I believe is the capacitor: 97F9003


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OfflineSimper
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Re: laminar flow hood questions [Re: Simper]
    #21831363 - 06/20/15 05:39 AM (8 years, 7 months ago)

The blower is a 4 speed. So that should make things possible. FOAF wants to go for it. Has anyone ordered a filter from earths tongue or has a suggestion for the filter?


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Invisiblemaddchef
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Re: laminar flow hood questions [Re: Simper]
    #21831676 - 06/20/15 08:37 AM (8 years, 7 months ago)

Dunno what to tell you man. You're going about this the wrong way, its like buying a big boat without knowing or not if your little truck can tow it. It may or you may have to buy a bigger truck.


--------------------
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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OfflineGr0wer
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Re: laminar flow hood questions [Re: maddchef]
    #21832373 - 06/20/15 01:20 PM (8 years, 7 months ago)

60-100 feet per minute is the target airspeed for laminar flow. So if you picked up a 2'x2' astrocel off ebay for $120 you would need 240-400 CFM at ~1 SP. Going off the specs for the 1/4 hp similarly designed furnace blowers I'd say you're pushing more than enough air, probably enough for two 2x2" filters on your highest speed to be honest. You can pick up an anemometer for less than $20 and dial in the fpm using the four speeds on the blower. Good luck!

http://www.amazon.com/COZYSWAN-Pocket-Digital-Anemometer-Thermometer/dp/B009QTGK3M/ref=pd_sim_86_2?ie=UTF8&refRID=0JBZY4ZSB1EHJ447FNGY


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Offlineknomadic_niki
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Re: laminar flow hood questions [Re: Gr0wer]
    #21832402 - 06/20/15 01:29 PM (8 years, 7 months ago)

bummer. you really can't choose a filter without knowing the fan output under static pressure. most fans come with a chart that gives you cfm values for different static pressure ratings. also, you can't just put a fan speed regulator on any old fan. you'll create a huge fire hazard and possibly burn out your motor unless it was built as a variable speed fan.


--------------------
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OfflineGr0wer
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Re: laminar flow hood questions [Re: knomadic_niki]
    #21832457 - 06/20/15 01:48 PM (8 years, 7 months ago)

His fan is a 4 speed fan, its built into the unit.


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OfflineSimper
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Re: laminar flow hood questions [Re: Gr0wer]
    #21834027 - 06/20/15 09:12 PM (8 years, 7 months ago)

Thanks grower,
I will look into those filters.

Mad, I thinks more like a really big truck with a medium sized boat. I'll keep trying to figure out the cfms. Right now I am more interested in the filter as the blowers already around.


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