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I'm sure this idea has been mentioned but has anyone any comments ?



keep to the Fen Causeway

by Helen (lareinagal at yahoo dot co dot uk) on Mon Sep 5th, 2011 at 06:14:41 AM EST
[ Parent ]
That 'windlens' seems to be a lot of material – I wonder at the cost factor. Also, it is nice to see production raised more than twice for a turbine with less than a metre long blades, but how does the increased energy production scale?

*Lunatic*, n.
One whose delusions are out of fashion.
by DoDo on Mon Sep 5th, 2011 at 06:54:20 AM EST
[ Parent ]
Sure, you have to wonder about the mechanical practicality of a large scale version and I look forward to seeing that scaled up version tested.

keep to the Fen Causeway
by Helen (lareinagal at yahoo dot co dot uk) on Mon Sep 5th, 2011 at 07:06:31 AM EST
[ Parent ]
I wonder what the efficiency results would be (ignoring cost), if fixed position smaller windlenses were installed on a tower. I recall about a month ago that a 13 year old demonstrated greater PV efficiency with this concept.

You can't be me, I'm taken
by Sven Triloqvist on Mon Sep 5th, 2011 at 07:49:48 AM EST
[ Parent ]
Shrouded turbines of all manner have been studied for decades. They don't scale well, nor do they reproduce lab efficiencies in the field. Yawing a shroud is tough. And the low pressure vortices drift all over the place.

"Life shrinks or expands in proportion to one's courage." - Ana´s Nin
by Crazy Horse on Mon Sep 5th, 2011 at 08:14:30 AM EST
[ Parent ]
See this thread from 18 months ago.

Economics is politics by other means
by Migeru (migeru at eurotrib dot com) on Mon Sep 5th, 2011 at 08:36:29 AM EST
[ Parent ]
Thanks, that's brilliant

keep to the Fen Causeway
by Helen (lareinagal at yahoo dot co dot uk) on Mon Sep 5th, 2011 at 08:46:19 AM EST
[ Parent ]
Nice catch Migs, had totally forgotten.

"Life shrinks or expands in proportion to one's courage." - Ana´s Nin
by Crazy Horse on Mon Sep 5th, 2011 at 09:37:57 AM EST
[ Parent ]
Thank you, I was hoping you'd come in.

keep to the Fen Causeway
by Helen (lareinagal at yahoo dot co dot uk) on Mon Sep 5th, 2011 at 08:46:57 AM EST
[ Parent ]

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