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This thread may being growing legs of its own. Consider the updraft tube
need not be lengthy nor have a diameter greater than
40-50 meters. based on 6:1 ratio. Schauberger once studied a variation of
this.
A vortex can be induced at the base which would supercharge the draft.
Hmmm.. I need to run a test on a tiny scale mockup to study the spin. A
reverse vortex may give better performance on a downdraft configuration.
Proper selection of the shape of the top of the riser tube can be important
in that on an updraft tube ,the shape of the top acts as a ejector. Steam
injection may make for instability.. or create the mother of all tornados.
Here Jed.. stand over here while we start this jalopy up... <
grin>
Richard
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