Hydroelectric turbines
- chatelot16
- Econologue expert
- posts: 6960
- Registration: 11/11/07, 17:33
- Location: Angouleme
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Hello, another spiral turbine
https://www.youtube.com/watch?v=ZNrqjMbQ9Ng
it seems that the video dates from 1988 and not much as comments, too bad
https://www.youtube.com/watch?v=ZNrqjMbQ9Ng
it seems that the video dates from 1988 and not much as comments, too bad
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- moulino51
- I understand econologic
- posts: 85
- Registration: 27/02/12, 01:50
- Location: On land near Reims
- x 3
oli 80 wrote:Hello, another spiral turbine
https://www.youtube.com/watch?v=ZNrqjMbQ9Ng
it seems that the video dates from 1988 and not much as comments, too bad
I do not see a spiral turbine (hydrodynamic screw), but a system of vanes rotating on chain sprockets.
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The current hydrodynamic screws are equipped with at least two turns of revolution, but generally three.
In France they are struggling to establish themselves because of an uncertain yield because of a very large multiplier, and a high cost.
But the efficiency is practically constant over the entire speed range
They nevertheless bring a certain interest thanks to a reduced civil engineering cost.
GS
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