I have been looking into blowers for my flow hood build and saw these types of inline fans as attractive fairly inexpensive options. But, I couldn't find any info on how they perform at various static pressures at all. Which leads me to believe they probably don't perform as well as the squirrel cage blowers that are clearly made to blow against some static pressure as the manufactures give much more supporting data to show how they perform in a range of static pressures. That doesn't mean that the inline ones won't work if you manage to get the right size to match your filter though since there are build threads with them used. If anyone has a link that has that info for these inline fans that would be great.
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Offlinedonrjuan
Myco Acolyte
Registered: 10/20/10
Posts: 216
Loc: 7000'
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Re: Creating a flowhood with a 6" inline duct fan. [Re: Juiceh]
#17742725 - 02/04/13 10:50 AM (8 days, 2 hours ago)
I personally have no experience with the fans you speak of. But if you are looking for an attractive and cost effective solution, you should call around to your local HVAC repair shops and see if they have any forced air blowers lying around. I called about ten before starting to get hits and finally landed on a shop that regularly sold them for cheap. 2, 1/2 hp 4 speeds for $25. Be sure to break them down and clean them well.
Do not get too hung up on the blower match. If you get a sufficiently sized blower for the filter (in the general range) you can dial it in by adjusting the incoming air. I have a piece of paper taped over part of my pre-filter to achieve proper flow.
You can always dial down the flow of air. My fan could run a full room 4x4 HEPA filter but I dont need that much space currently so its turned down to run a 2ft x 18in filter instead.
