Check on vac motor sizing.

Discussion on general flowbench design

Postby 83-1184962233 » Wed Aug 01, 2007 8:21 am

Hi All,

I got a good deal on 8 YDK YV-2100 vac motors for my flowbench. I've been running through some calcs to look at flow vs pressure from their product graph. I wondered if you guys could just check to see if I've got this right...

This is the graph for the vac motor.

Image

I worked out that 1Pa is 0.004"H2O and therefore 1 hs is 10Pa or 0.04"H2O and 1 d/m^3/s is 2.1188CFM.

Now, say I use an incline manometer with 8" vertical rise and test at the following test pressures, this will give me:

28" test + 8" dp H20 gives 36"H2O total. One motor gives ~99CFM @ 36"H20 therefore 8 motors would do ~792CFM total at that test pressure right?

Using the above, at 40" test pressure for a total of 48"H2O, one motor gives ~91CFM @ 48"H2O therefore 8 motors would do ~728CFM.

Does this sound right and do these seem like a good motor to use? Hard to get the Amtek ones over here in the UK, at a sensible price anyway.

Hope you guys can help :)
83-1184962233
 

Postby SWR » Wed Aug 01, 2007 2:40 pm

From what I get one motor can pull 65" while relocating 80cfm of air... Eight of them should handle 500+ cfm at 65",that should make your bench able to handle most heads with ease...
SWR
 
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Postby 83-1184962233 » Tue Aug 07, 2007 5:48 pm

Thanks SWR :)
83-1184962233
 

Postby SWR » Tue Aug 07, 2007 8:29 pm

You're welcome,Stef. I just wish I had the 12Kw of power available to run mine.
SWR
 
Posts: 121
Joined: Fri Dec 15, 2006 7:47 pm
Location: Norway


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