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If you are sufficiently far away from the pressurizing fan, there won't
be any perceptible wind at all. The fan will create pressure more than
flow. A conventional cleaning vacuum works by a difference in pressure
between the room and the catch chamber (the tank of a shop vac
perhaps). In the arrangement I am considering, there still is the
difference in pressure, but this time it's between the room and the
great outdoors.
--
(||) Nehmo (||)
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