<VV> Fans/.my take

[ScottyGrover at aol.com]

In a message dated 8/2/2007 11:14:51 P.M. Pacific Daylight Time,  
r.gault at sbcglobal.net writes:

PS:  I had a dream of building an iris like device to decrease the  diameter
of the inlet hole.  The iris would be controlled by pressure  inside the
turkey roaster, so that the pressure was limited to something  like 8 in-H2O.
This would give about 90% of the max flow, but cap the hp  requirement at
somewhere around 8 hp.  Still a lot, but better than  18+.  But, I'm way too
lazy to actually do  this.



I've found iris dampers catalogued but they don't have the type of pressure  
control you describe; they are controlled manually by setting the iris to a  
fixed position.  I'll keep on looking to find some kind of control damper  that 
can be made to work.
 
Scotty from Hollyweird



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