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OfflinePutACapInHisAss
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LFH Scenario, Please Review
    #23536639 - 08/12/16 11:47 PM (7 years, 5 months ago)

I'm looking at a HEPA filter with these specs:

Target (W.G.): 0.40
Velocity: 90 FPM
Airflow: 550 CFM

From this velocity I'm guessing that this filter was designed for laminar flow. Would you agree?

I was looking at a pre-filter that has a static pressure of .23 (W. G.).

Since my airflow will be 90 degrees from the filter into the plenum, I should add about 10% extra CFM because this also creates a small pressure drop.

So, adding 10%, I would need a fan capable of 605 CFM @ .4 + .23 = .63 (W.G.) to achieve the laminar flow of 90 FPM for which the HEPA filter was designed with the given pre-filter?


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