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StealingKnowledge Reged: 03/28/16 Posts: 371 Loc: Under a Rock, Bo |
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A little while back I purchased two new Grainger HEPA filters, very nice ones. They list for $763 each on the Grainger website, but I got a very nice deal on them (under $300 for both). My idea was to build a single flow hood with both these filters, and have them side by side. I have the fan to accommodate them both, if I did my math right. The blower fan is a Dayton 1TDU2 model. The filters have 1.0" of initial static pressure. I plan for .2" for prefilter. That's 1.2" static pressure The blower pushes out between 850-1000 CFM at 1.2" of static pressure. The area of one filter (2'X2'= 4ft) times 2 filters (8ft) The cfm I would need to blow at least 100cfm out the filter is (8ft X100cfm= 800cfm) So, what I need is a fan the blows at least 800cfm @ 1.2" of static pressure, which I have as stated 3 lines above. Should I run into any issues running two filters off of one fan in the same box? I can't find a solid answer (maybe I'm not searching in the right places) on how much depth should be behind the filters? The filter has a 12" depth, so would something like an additional 16" behind that be sufficient enough? Making the total depth of the box to be 28". The front length of the box will be about 50" to accommodate the filters, and the height will be about 25". I kind of just wanted to post my ideas so far on this forum so I can get any possible necessary criticism to avoid me from overthinking or missing something completely. Would like to avoid any costly mistakes. Thanks guys!!
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