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Home Made Francis turbine | 4 comments (4 topical, editorial)

Re: Home Made Francis turbine (3.00 / 0) (#3)
by Ungrounded Lightning Rod on Fri Apr 4th, 2008 at 02:10:48 PM MST
(User Info)

I think boat propellers have the same problem when used as water turbines as aircraft propellers have when used as wind turbines: The variable-thickness curvature that creates lift is on the wrong side of the blades. So they're not as efficient as a purpose-built design with the right shape.

As Flux and Scott said, a Banki makes more sense. Not only is it easier to build, it is to a large extent self-cleaning. (Debris big enough to get stuck on the rotor openings when the water goes in on the first pass are washed off when it goes out on the second.)

Home Made Francis turbine | 4 comments (4 topical, 0 editorial)

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