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bust79
Stranger


Registered: 08/03/16
Posts: 193
Last seen: 2 years, 7 months
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Another Flow hood build question..
#25049900 - 03/08/18 04:28 PM (5 years, 11 months ago) |
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Hi all.
I know that this has been done a thousand times but i don't want to mess up and get the wrong thing when i build my first flow hood. I have been doing a fair bit of research on matching the blower and the HEPA filter and i think i have it right but just want to make sure before i pull the trigger. I have read the Fungifun info on this topic and that was very helpful. http://www.fungifun.org/English/Flowhood
So here it is: I am looking at getting this HEPA filter. http://www.newgenerationmushroomsupplies.com.au/index.php?route=product/product&path=110_123&product_id=140 it is 91.5cm x 61cm x 15 cm or 3ft x 2ft = 6ft2
The blower i am looking at is a Single Inlet Centrifugal Fans 200mm 240V with the following specs:
Voltage-220V
50Hz
Amps 1.8
Power input W 360
r/min 1300
M3/H 1365
static pressure 0
The link if you are interested.
http://vi.vipr.ebaydesc.com/ws/eBayISAPI.dll?ViewItemDescV4&item=172842846620&t=1504378547000&tid=-1&category=70574&seller=*haitonparts*&excSoj=1&excTrk=1&lsite=15&ittenable=false&domain=ebay.com.au&descgauge=1&cspheader=1&oneClk=1&secureDesc=0
My question is, is this blower and HEPA filter matched correctly?
Any guidance, help or suggestions will be greatly appreciated. FYI i live in Australia so i can't get a professionally made laminar flow hood shipped here like i have seen other members of this forum get. ( for a reasonable price)If i am wrong, please send me the link
Thanks in advance
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bodhisatta 
Smurf real estate agent


Registered: 04/30/13
Posts: 61,890
Loc: Milky way
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Re: Another Flow hood build question.. [Re: bust79]
#25050089 - 03/08/18 05:36 PM (5 years, 11 months ago) |
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You need the chart that says what the blower pushes against more than Just 0 resistance
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bust79
Stranger


Registered: 08/03/16
Posts: 193
Last seen: 2 years, 7 months
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Re: Another Flow hood build question.. [Re: bodhisatta]
#25050145 - 03/08/18 05:54 PM (5 years, 11 months ago) |
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TY Bodhisatta I have emailed them asking for the info.
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bodhisatta 
Smurf real estate agent


Registered: 04/30/13
Posts: 61,890
Loc: Milky way
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Re: Another Flow hood build question.. [Re: bust79]
#25050162 - 03/08/18 06:00 PM (5 years, 11 months ago) |
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also the resistance of the filter would be helpful but you can just assume it's 1" w.g. which would be 2.54cm w.g.
so you need a blower that can push 600cfm (16.8 M3/min) at 1" w.g.(2.54cm w.g.)
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bust79
Stranger


Registered: 08/03/16
Posts: 193
Last seen: 2 years, 7 months
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Re: Another Flow hood build question.. [Re: bodhisatta]
#25061265 - 03/13/18 06:30 PM (5 years, 11 months ago) |
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Hi, i have asked the supplier of the above mentioned fan for the chart but they have not gotten back to me, so I found this one... https://www.ebay.com.au/p/250w-Centrifugal-Blower-Fan-Fireplaces-Pellet-Stove-900-M-H-Burners-Heating/918358641?iid=263511634438&_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D20140106155344%26meid%3D92a8211eb8374fb2a192c5d4b24095fb%26pid%3D100005%26rk%3D3%26rkt%3D4%26sd%3D172842842830%26itm%3D263511634438&_trksid=p2047675.c100005.m1851
Max air flow is 1539m3/h or 900CFM


Am i correct in thinking that this is about half the blowing power i need for the above mentioned 6ft2 hepa filter and a prefilter with around 50Pa..?
If i am correct, would hooking two of these blowers up to my flow hood do the trick?
Thanks again and sorry for being a kook.
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bust79
Stranger


Registered: 08/03/16
Posts: 193
Last seen: 2 years, 7 months
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Re: Another Flow hood build question.. [Re: bust79]
#25116728 - 04/05/18 07:17 PM (5 years, 10 months ago) |
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So i made the flow hood. Here are the pics of it. Thanks again for your help Bodisatta.

The pre filter

under construction

Blower used is represented by the solid red line. I tried to get a different blower but they didn't have the one I was after so I went a bit bigger.
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bodhisatta 
Smurf real estate agent


Registered: 04/30/13
Posts: 61,890
Loc: Milky way
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Re: Another Flow hood build question.. [Re: bust79]
#25117044 - 04/05/18 09:35 PM (5 years, 10 months ago) |
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 +5
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