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Offlinedigdog
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Will this HEPA filter work for building my laminar flow hood?
    #21749155 - 06/01/15 03:47 PM (8 years, 7 months ago)

http://www.steam-brite.com/clean-storm-hepa-filter-9997-particle-board-161606h910-nikro-860956-p-88046.html

Thanks to anyone who can confirm this will work. I have heard RR et al talk about "ceramic" filters and just want to be sure this will work as it is $150 with shipping.

Thanks,

Dig Dog


--------------------
Once I stop learning, life will cease to have meaning.


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Invisiblegray
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Registered: 03/07/15
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Re: Will this HEPA filter work for building my laminar flow hood? [Re: digdog]
    #21752160 - 06/02/15 10:46 AM (8 years, 7 months ago)

The datasheet doesn't specify what the pressure drop of the filter is, which makes calculating what fan/blower you need a bit tricky...

Filter resistance varies with air flow rate, there's often a graph of these two factors in the datasheets I've seen.


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Invisibleinsanemike

Registered: 02/23/14
Posts: 4,272
Re: Will this HEPA filter work for building my laminar flow hood? [Re: gray]
    #21752225 - 06/02/15 11:06 AM (8 years, 7 months ago)

This is a step by step guide thay will take you through the entire process.

http://www.fungifun.org/English/Flowhood


Edited by insanemike (06/02/15 11:07 AM)


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Invisibleslapphappypill
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Re: Will this HEPA filter work for building my laminar flow hood? [Re: insanemike]
    #21752232 - 06/02/15 11:08 AM (8 years, 7 months ago)

the filter will work, but yeah, you'll need to find the right blower to work with it :jah:


--------------------
We think we have freedom, but we're all just mice in a maze....

                   

FYI: I stole all my pix off google! F+ PORN! Here is a shit-ton of porn by yours truly!

I have FINALLY written up a couple teks as to how SHP has done things in the past. DISCLAIMER: This is not for the newbie to mycology, and not going to work for everyone! This is simply what works for one person when other teks and methods have failed miserably!
~~~~~How SHP does their unconventional WBS Prep!! (NO DRY METHOD)~~~~
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Offlinedigdog
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Re: Will this HEPA filter work for building my laminar flow hood? [Re: slapphappypill]
    #21765515 - 06/05/15 11:27 AM (8 years, 7 months ago)

Thank you to everyone that responded.

I ended up ordering this filter:

http://www.spycor.com/Particle_Board_HEPA_18_x_24_x_11_5_p/nchp182412s910.htm?CartID=1 as the size is more appropriate for a proper workspace I think.

I tried to contact NC Filtration to get better specs but they have not responded.

So looking around I see that people are saying to multiply the width x height x the depth (in feet) to get the proper cfm numbers?

If I understand that correctly then it would be 1.5 x 2 x 1 (roughly) to equal 3 and that somehow equates to 300cfm?

Does not sound right to me.

Really need some guidance here.

I am also looking at this exhaust fan to use as the blower:

http://www.northerntool.com/shop/tools/product_200444853_200444853

If that fan will work it saves so much hassle and a little money as well.

TIA to anyone that can help I know it is a long winded question but I am unsure on the whole fan issue.


--------------------
Once I stop learning, life will cease to have meaning.


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Invisibleinsanemike

Registered: 02/23/14
Posts: 4,272
Re: Will this HEPA filter work for building my laminar flow hood? [Re: digdog]
    #21765549 - 06/05/15 11:39 AM (8 years, 7 months ago)

I ordered my hepa from there. You may have been better off with 6" depth instead of the 12. That flowhood is going to be huge. Depth has nothing to do with cfm, you only need to concern yourself with height×width.

this is what I purchased http://www.spycor.com/mobile/Product.aspx?ProductCode=H13G1X1

this is a chart that tells you how many cfm you need to push through the filter at a static pressure of 1". Then you need to find a blower capable of pushing that many cfm at a static pressure of 1".

http://www.kochfilter.com/BioMAX_HEPA


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Offlinedigdog
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Re: Will this HEPA filter work for building my laminar flow hood? [Re: insanemike]
    #21765612 - 06/05/15 11:58 AM (8 years, 7 months ago)

Quote:

insanemike said:
I ordered my hepa from there. You may have been better off with 6" depth instead of the 12. That flowhood is going to be huge. Depth has nothing to do with cfm, you only need to concern yourself with height×width.

this is what I purchased http://www.spycor.com/mobile/Product.aspx?ProductCode=H13G1X1

this is a chart that tells you how many cfm you need to push through the filter at a static pressure of 1". Then you need to find a blower capable of pushing that many cfm at a static pressure of 1".

http://www.kochfilter.com/BioMAX_HEPA




Mike - Thanks so much for the heads up. I just ordered the other filter this morning and I called spycor (had to leave a message) about cancelling/changing my order. Not only is the filter you recommend half the depth, it is also $50 cheaper. Not sure how I missed that when I was looking at them.

Anyway, thanks again. BTW what CFM does the filter you recommend require?

Thanks again,

DigDig


--------------------
Once I stop learning, life will cease to have meaning.


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Offlinedigdog
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Re: Will this HEPA filter work for building my laminar flow hood? [Re: digdog]
    #21765642 - 06/05/15 12:08 PM (8 years, 7 months ago)

@Mike

Okay looking at the chart I see it now, with the filter you recommend I need a blower that does 420cfm?

If so then a 450cfm blower would be about right with a pre-filter attached I am guessing.


--------------------
Once I stop learning, life will cease to have meaning.


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Invisibleinsanemike

Registered: 02/23/14
Posts: 4,272
Re: Will this HEPA filter work for building my laminar flow hood? [Re: digdog]
    #21765736 - 06/05/15 12:34 PM (8 years, 7 months ago)

Okay since you are getting the same hepa that I have I will also just send you a link for the blower I purchased. I found mine on ebay for half the price so just shop around for the best deal.

I purchased the fantek fkd10 series. You will have to go to a hardware store and buy a power cord that you need to wire yourself but it's not hard to do. Don't worry about a speed control for this blower, it will put enough air through the hepa to reach laminar flow when it's running at full speed.



http://www.hvacquick.com/products/residential/AirFlow-Boosting/Inline-Air-Booster-Fans/Fantech-FKD-Series-Inline-Centrifugal-Fans


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Invisibleinsanemike

Registered: 02/23/14
Posts: 4,272
Re: Will this HEPA filter work for building my laminar flow hood? [Re: insanemike]
    #21765763 - 06/05/15 12:39 PM (8 years, 7 months ago)

Here are 2 of the fkd 10 series from ebay

http://m.ebay.com/itm/271530319046?nav=SEARCH
http://m.ebay.com/itm/381017933330?nav=SEARCH

or there is a bigger blower that is cheaper but you will need a speed control to dial it back a bit.

http://m.ebay.com/itm/361096545555?nav=SEARCH


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Offlinedigdog
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Re: Will this HEPA filter work for building my laminar flow hood? [Re: insanemike]
    #21765889 - 06/05/15 01:11 PM (8 years, 7 months ago)

Mike ~

Thanks for all your help. Spycor called me back and is cancelling my order so that I can order the filter you use.

So based upon your links to blowers I think this would be a good call.

http://www.ebay.com/itm/VenTech-4-6-8-Inline-Duct-Booster-Blower-Fan-with-Variable-Speed-Controller-/171192355184?pt=LH_DefaultDomain_0&var=&hash=item27dbdc0970

Then I can adjust the blower to achieve proper flow.

Thanks again

DigDog


--------------------
Once I stop learning, life will cease to have meaning.


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Invisibleinsanemike

Registered: 02/23/14
Posts: 4,272
Re: Will this HEPA filter work for building my laminar flow hood? [Re: digdog]
    #21767745 - 06/05/15 09:26 PM (8 years, 7 months ago)

I'm not sure if any of those will work because there isn't a chart to show that the blower can push out the needed cfm to reach 1" static pressure. Don't go cheap on the blower, it's just as important as the hepa. Your best bet would be to go with that fantek fkd 12 for $300. http://m.ebay.com/itm/361096545555?nav=SEARCH&rmvSB=true&ul_ref=http%253A%252F%252Frover.ebay.com%252Frover%252F1%252F711-53200-19255-0%252F1%253Fff3%253D4%2526pub%253D5574691905%2526toolid%253D10001%2526campid%253D5335980952%2526customid%253Dautolink%2526mpre%253Dhttp%253A%252F%252Fm.ebay.com%252Fitm%252F361096545555%253Fnav%253DSEARCH%2526srcrot%253D711-53200-19255-0%2526rvr_id%253D843219923965 It's cheaper than a brand new fkd 10 but you can dial it back with a speed control. Oh and just to let you know, it will take 4-6 weeks for you to receive your hepa so don't make any rash decisions on a blower, you have plenty of time to find a good deal.


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InvisibleRPW
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Re: Will this HEPA filter work for building my laminar flow hood? [Re: digdog]
    #21768053 - 06/05/15 10:45 PM (8 years, 7 months ago)

Quote:

digdog said:
Mike ~

Thanks for all your help. Spycor called me back and is cancelling my order so that I can order the filter you use.

So based upon your links to blowers I think this would be a good call.

http://www.ebay.com/itm/VenTech-4-6-8-Inline-Duct-Booster-Blower-Fan-with-Variable-Speed-Controller-/171192355184?pt=LH_DefaultDomain_0&var=&hash=item27dbdc0970

Then I can adjust the blower to achieve proper flow.

Thanks again

DigDog




Did you ever get a resistance rating on either of the filters? If there's not enough resistance it might make it hard to achieve laminar flow, I believe .8-1" of WG at 125fpm is what's generally looked for. Please let me know, because those are fairly inexpensive filters and I'm looking into building a flow hood myself.


--------------------
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Please PM if you have any of these for trade.


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Invisibleinsanemike

Registered: 02/23/14
Posts: 4,272
Re: Will this HEPA filter work for building my laminar flow hood? [Re: RPW]
    #21768101 - 06/05/15 10:56 PM (8 years, 7 months ago)

Quote:

RPW said:
Quote:

digdog said:
Mike ~

Thanks for all your help. Spycor called me back and is cancelling my order so that I can order the filter you use.

So based upon your links to blowers I think this would be a good call.

http://www.ebay.com/itm/VenTech-4-6-8-Inline-Duct-Booster-Blower-Fan-with-Variable-Speed-Controller-/171192355184?pt=LH_DefaultDomain_0&var=&hash=item27dbdc0970

Then I can adjust the blower to achieve proper flow.

Thanks again

DigDog




Did you ever get a resistance rating on either of the filters? If there's not enough resistance it might make it hard to achieve laminar flow, I believe .8-1" of WG at 125fpm is what's generally looked for. Please let me know, because those are fairly inexpensive filters and I'm looking into building a flow hood myself.




Trust me, the filter I talked him into purchasing and the blower I suggested are very compatible.

Here they are together demonstrating laminar flow



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Offlinedigdog
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Re: Will this HEPA filter work for building my laminar flow hood? [Re: insanemike]
    #21772552 - 06/07/15 12:16 AM (8 years, 7 months ago)

Mike,

I got busy as heck yesterday and today and did not see your response until tonight.

I sent a message to the manufacture/distributor of the Ventech and I am awaiting a response about cfm rating @ 1.2 w.g. plus I noted that the ebay ad uses the word "booster" in the title so I inquired whether it pushes 720cfm on it's own or boosts inline flow.

If it pushes 720cfm on it's own it should do the job don't you think?

The rating of that filter is only 420cfm and 1" w.g. initial pressure drop.

Thanks again. I backed off on the blower and have not ordered it yet. May order the filter on Monday. Waiting to match everything up.

Meanwhile I am constructing a SAB/GB :cool:


--------------------
Once I stop learning, life will cease to have meaning.


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Invisibleinsanemike

Registered: 02/23/14
Posts: 4,272
Re: Will this HEPA filter work for building my laminar flow hood? [Re: digdog]
    #21772602 - 06/07/15 12:55 AM (8 years, 7 months ago)

You can't determine that a blower should push out x amount of cfm at 1.2" sp just because it has a high cfm rating at 0 resistance. Do not buy a blower unless you know for sure what the specs are at 1.2" sp. That fantech fkd 12 is a great deal and if I were you would jump all over it because I don't think you'll find a better deal than that.


Edited by insanemike (06/07/15 12:56 AM)


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Offlinedigdog
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Re: Will this HEPA filter work for building my laminar flow hood? [Re: digdog]
    #21773204 - 06/07/15 08:54 AM (8 years, 7 months ago)

@ Mike

Yeah that 12" blower is a good deal but it is still $360 with shipping. I will have to wait until next month to fit that in the budget if that is what I end up needing. I should hear from Ventech tomorrow when they are back in the office as to the specs.

Thanks for the advice, rest assured I will not order a blower without knowing it will push the right cfm @ 1.2 sp


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Invisibleinsanemike

Registered: 02/23/14
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Re: Will this HEPA filter work for building my laminar flow hood? [Re: digdog]
    #21773237 - 06/07/15 09:04 AM (8 years, 7 months ago)

Quote:

digdog said:
@ Mike

Yeah that 12" blower is a good deal but it is still $360 with shipping. I will have to wait until next month to fit that in the budget if that is what I end up needing. I should hear from Ventech tomorrow when they are back in the office as to the specs.

Thanks for the advice, rest assured I will not order a blower without knowing it will push the right cfm @ 1.2 sp




Since your hepa won't be in for about 4-6 weeks, just keep looking on ebay for the next month. I found a deal on ebay from hvacquick.com. They couldn't sell the item on there website because of some blemish and when I say blemish I mean needed them to explain to me what the cosmetic damage was because I couldn't see any. Anyway, I got the fantek fkd 10 for $240 and anywhere else they're over $400 brand new.


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InvisibleWilly Wonka
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Re: Will this HEPA filter work for building my laminar flow hood? [Re: insanemike]
    #21773391 - 06/07/15 09:55 AM (8 years, 7 months ago)

Check Zoro.com for a blower.  They have great prices on Dayton blowers.  That is really the type of thing you want.  If you search the net you can always find a code for 20% off.  Here is the one I picked up.  http://www.zoro.com/i/G1061216  I spent like $150 total.  Plus they have free shipping.


--------------------
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Invisibleinsanemike

Registered: 02/23/14
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Re: Will this HEPA filter work for building my laminar flow hood? [Re: Willy Wonka]
    #21773431 - 06/07/15 10:09 AM (8 years, 7 months ago)

Oops! Four-oh-no...

404 ERROR : Page Not Found

This is what pops when I click on that url.


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Offlinedigdog
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Re: Will this HEPA filter work for building my laminar flow hood? [Re: insanemike]
    #21773988 - 06/07/15 01:05 PM (8 years, 7 months ago)

Its all good. I have looked at them on Zoro and on ebay and about everywhere else as well. Thanks for the heads up though.


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OfflineRosen_Rot
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Re: Will this HEPA filter work for building my laminar flow hood? [Re: digdog]
    #23290698 - 05/31/16 02:19 AM (7 years, 7 months ago)

What type of blower did you eventually go with

I am following a similar build and in my original plan I wanted to get dayton blowers


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