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Offlinemaxamillian1989
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flow hood double check please help
    #17301009 - 11/29/12 12:40 AM (11 years, 5 months ago)

I just finshed making my flow hood, I know my blower I got puts out more than enough cfms at the right static pressure. First question; if it blows out the the flame during a lighter test does it still create a laminar flow? OR MUST I adjust the air intake? Second question, is if my HEPA is installed correctly, is my black gasket aimed towards me or towards my blower? It says air should flow towards the gasket,
like this ---->  then goes my gasket

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OfflineAquamon
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Re: flow hood double check please help [Re: maxamillian1989]
    #17301512 - 11/29/12 06:15 AM (11 years, 5 months ago)

Make sure that the air is flowing in the direction of the arrow.

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OfflineTheCyndicate
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Re: flow hood double check please help [Re: maxamillian1989]
    #17302739 - 11/29/12 11:57 AM (11 years, 5 months ago)

You should ask these questions before construction .

1. no if it blows out the lighter it will be too turbulent to achieve laminar flow .
2. some filters are designed to work in both directions , when in doubt mount the filter according to the arrow . 

Cyn

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Offlinetotal
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Re: flow hood double check please help [Re: TheCyndicate]
    #17302862 - 11/29/12 12:31 PM (11 years, 5 months ago)

The black gasket facing you is to secure the filter against the back trim with pressure with more trim...

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OfflineRogerRabbitM
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Re: flow hood double check please help [Re: total]
    #17306049 - 11/29/12 10:18 PM (11 years, 5 months ago)

Quote:

if it blows out the the flame during a lighter test does it still create a laminar flow? OR MUST I adjust the air intake?




Yes, you must adjust the airflow.  It's not as much about laminar flow as too much flow.  Remember, at 99.99% efficient, they can still let .01% of the contaminants through, so have the unit running at minimum speed to keep your work area at maximum sterility.

The lighter should bend 45 to 60 degrees, but not flicker or blow out.  It should bend the same no matter where in the work area you place it.
RR


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