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Kaplan Turbine | 10 comments (10 topical, editorial)

Re: Kaplan Turbine (3.00 / 0) (#5)
by WXYZCIENCE on Tue Mar 4th, 2008 at 09:40:13 AM MST
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Hannu, the engineering of the impeller by Bombardia is what I am using. It is made of high quality stainless. The input vanes will be somewhat of a challenge because they have to be adjustable. Also the water flowing through the runner has to be very uniform.
I would be very interested in your friends design that you speak about. Thank you for your input.
Joseph.

[ Parent ]

Re: Kaplan Turbine (3.00 / 0) (#6)
by Gog on Wed Mar 5th, 2008 at 02:02:15 AM MST
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In my own creek I would expect to see trash (long thin ferny stuff here ) building up on the gates,
rather than the runner. Assuming there is a bit of clearance at the blade tips.
I think filtering will have to be good.

At this size ,It may be that getting your scroll case close enough down to the runner will give you a swirl that will give
an angle of attack that is good enough without the gates and their associated maintenance.

I suspect though ,that my idea of good enough and yours are miles apart , I'm pretty lazy.

all the best
Keith

[ Parent ]

Re: Kaplan Turbine (3.00 / 0) (#7)
by WXYZCIENCE on Wed Mar 5th, 2008 at 10:29:35 AM MST
(User Info)

Keith, thanks for your input. Debris will be a problem I agree. This is all new to me and I enjoy challenges. The fun is in the doing. Something like Calvin and Hobbs and his propeller hat.
Joseph.

[ Parent ]

Re: Kaplan Turbine (3.00 / 0) (#8)
by Ungrounded Lightning Rod on Wed Mar 5th, 2008 at 03:20:20 PM MST
(User Info)

Look into coanda effect debris screens. They let virtually all the water through with very little pressure or velocity loss while the debris slides off the surface without penetrating or hanging up on it.

[ Parent ]

Kaplan Turbine | 10 comments (10 topical, 0 editorial)

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