Comments on: Archimedean Screw Hydro Turbine – Fish friendly generation

By: karan dudhane

karan dudhane — Fri, 22 Jan 2010 09:27:10 +0000

it really helped me in my project. thank u so much!!!!!!

By: Ben Mehuwa

Ben Mehuwa — Mon, 21 Dec 2009 23:36:28 +0000

very interesting product, would like to know more about it to see how it can fit into my environment.

By: Zeno Winkens

Zeno Winkens — Wed, 11 Nov 2009 12:39:49 +0000

Hi Frank,
great product, I hope I’ll have a client that will need one soon.
Zeno

By: Greg Allen

Greg Allen — Fri, 04 Sep 2009 12:09:57 +0000

Hi,
This looks pretty impressive. The low rpm and only 1 or 2 leading edges render it very fish friendly. If operated in reverse it could potentially be used as a fish lift to pass migrating fish upstream. This would require attraction flow, and a crowder that will add to the costs. I’m also interested in the ROI.
Greg

By: Frank Heller

Frank Heller — Sun, 23 Aug 2009 17:23:24 +0000

I am considering this device as another ‘fish friendly’ component in small hydro installations.

We need pricing and installation designs; as well as a ‘certificate of approval’ from an independent fish biologist as to both down and, especially up stream migration.

The fish species of concern are salmon runs upstream…large fish and smolts downstream; alewives both up and down; and eels up–large, and down, elvers–tiny.

It appears to be impervious to icing up? and small debris.

Do you have output data for ROI calculations.

Ironically I found out a friend makes wooden bearings he says were used in some kind of Archimedes screw somewhere…I then got a sales pitch for wooden bearings as more durable than metal for underwater applications and I made one back to sell him lignum Vitea belt wheels from an old sawmill he could recycle.

Anyway, I think, depending upon costs and fish habitat issues this could be an exciting reinvention of the wheel.. circa 1,000 B.C.??

By: Dave Jordan

Dave Jordan — Fri, 21 Aug 2009 10:20:19 +0000

Hi Mary,

Well done on your first blog post, we will subscribe to your RSS feed and keep up to date with all that’s coming up in the eco world.

Regards

Dave