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OfflineAlbertheisenhouer
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Finding a suitable prefilter / blower for laminar flowhood
    #21292092 - 02/18/15 05:36 AM (9 years, 2 months ago)

So I just bought a massive 1228x572x126 mm ULPA filter (95Pa) for my flowhood which I am gonna make. I have found a few vents (1500 m3/h and 2000 m3/h) which I think are suitable for this project. I need 1264 m3/h, but since I do not know the resistance of the prefilter it makes it hard to predict which blower is more suitable. I am also looking for a suitable prefilter, I have read about 10 threads about this but I am not realy sure about this. Some people say a piece of fleece is sufficient, others use different things. This is why I need your advise on this. What should I use as a prefilter? and which of these blowers is more suitable?

This is my ULPA filter:



this are my options on vents:
1500 m3/hour


2000 m3/hour


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Edited by Albertheisenhouer (02/18/15 05:37 AM)

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Offlinedrake89
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Re: Finding a suitable prefilter / blower for laminar flowhood [Re: Albertheisenhouer]
    #21293250 - 02/18/15 11:58 AM (9 years, 2 months ago)

i think either blower should do fine.  do you have pictures of them?  are they single or double inlet squirrel cage blowers?  i only ask because the graphs look good if I'm reading them correctly but the power draw seems VERY low.  Like something I would see on a 'can' or inline type centrifugal fan.


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Fiery Fungi (like us on faeboo)

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OfflineAlbertheisenhouer
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Re: Finding a suitable prefilter / blower for laminar flowhood [Re: drake89]
    #21293868 - 02/18/15 02:16 PM (9 years, 2 months ago)

here are some pictures of the vents:




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Offlinedrake89
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Re: Finding a suitable prefilter / blower for laminar flowhood [Re: Albertheisenhouer]
    #21294565 - 02/18/15 04:49 PM (9 years, 2 months ago)

I'm not used to working in metric but they look good.  I just know I have a 1/2Hp blower on a similar sized filter


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Fiery Fungi (like us on faeboo)

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Offlinekushroom
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Re: Finding a suitable prefilter / blower for laminar flowhood [Re: drake89]
    #21295829 - 02/18/15 09:12 PM (9 years, 2 months ago)

Ive been interested in a flow hood, about how much do you have to put into getting one completely constructed? Cause the SOB im using works but is just a pain and cuts my wrists up a little from the plastic arm vents even tho its plumbing pieces. Oh well nice setup man good luck with it -kushroom


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OfflineAlbertheisenhouer
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Re: Finding a suitable prefilter / blower for laminar flowhood [Re: kushroom]
    #21296652 - 02/19/15 01:17 AM (9 years, 2 months ago)

I got the filter for cheap, I paid 25 euro's for it. The blower is gonna be the most expensive for me (about 130 euro's). Prefilter is going to cost about 20 euro's I guess, wood and small things like screws and stuff is probably going to cost around 30 euro's. The total is about 200 euro's. Which is totally worth it if you can use it for such a long time.


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OfflineAlbertheisenhouer
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Re: Finding a suitable prefilter / blower for laminar flowhood [Re: Albertheisenhouer]
    #21354908 - 03/03/15 04:19 AM (9 years, 2 months ago)

Does this filter look okay as a pre-filter? it is 220x220 mm. The material is carbon fiber




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Offlinemaui
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Re: Finding a suitable prefilter / blower for laminar flowhood [Re: Albertheisenhouer]
    #21356279 - 03/03/15 12:50 PM (9 years, 2 months ago)

Any filter will work. The whole purpose of it is to increase the longevity of the HEPA so that it isn't filtering out material that any average filter can. I use a 12x12 pinned up to the intake, and an additional filter in front of that.





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