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Adding to Horace's thread, the draft tubes could be simple 36 ft diameter
corrogated drainage culvert mounted on the incline in length sections as long as
the incline.
A converging cone of less than 15 degrees with a cone shaped prop
configuration positioned in the converging cone that
adjusts ( necessary for proper speed efficency) outward
from the convergence would drive the generator. Interesting effects could
be developed by use of a diverging cone of not greater that 7 1/2 degrees in
that it would provide the ideal " Gibson formula" venturi throat. Placing
small parabolic segments near the converging cone would induce a vortex that
would continue through the inclined draft tube and discharge out the diverging
cone. Adding moisture ( steam) into the inlet would increase the flow via
differential temperatures May make a weathermaker on the leeward side of
the mountain. Be cheaper than building a 3500ft solar tower.
Richard |
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