Dear Emmanuel Paschos Good ...
Published by Prem Baboo, Researcher at www.researchGate.net
Dear Emmanuel Paschos
Good thinking about Achimedies Screw Electric generator. This the best for dirty water, slurry etc.
If water is fed into the top of an Archimedes screw, it will force the screw to rotate. The rotating shaft can then be used to drive an electric generator. Such an installation has the same benefits as using the screw for pumping: the ability to handle very dirty water and widely varying rates of flow at high efficiency. Settle Hydro and Torrs Hydro are two reverse screw micro hydro schemes operating in many countries.The power that we can be derived from a hydro site is a function of the head, or height, of the vertical drop and the volume of water in the river. The bigger the head and the bigger the volume of water the more power can be generated.Hydro turbines at any specific site are designed to capture the greatest possible head and the greatest possible volume of water – Turbines are designed to turn when water goes through them and it is the turning motion which generates electricity.
There are several types of hydro electric turbines. All the turbines have a gearing mechanism that drives the generator, but they differ in the manner by which the energy is extracted from the fall of water and converted into mechanical rotation. The mechanical rotation is then converted into electrical energy.
Advantages
1. Slow rotation – No blade strike damage to fish.
2. Normal water pressure = No fish swim bladder damage.
3. Large water chambers = Safe passage for fish of all sizes.
4. Smooth flow = No disorientation of fish.
5. No fish screening is required.
6.The generator is an off the shelf gear-motor that industry would use so it’s robust and proven.
Regards,
Prem Baboo