Keeled wind turbines?

[Woodcutter]

I don't know if you saw that?
http://www.youtube.com/watch?v=RagPPrHUMTY

From this article: http://www.futura-sciences.com/fr/news/ ... nes_17527/

[bham]

Already seen not long ago Bucheron but do the Belgians know that:
http://fr.youtube.com/watch?v=MEKmn2Jm9 ... re=related

Site (Lichtenstein?) http://www.greenenergy.li/turbo%203000% ... piloon.jpg

[Christophe]

Rolalal the old thing warmed up ...

Do Dune's wind traps remind you of anything?

More seriously: yes for the widest spectrum but they will never recover more than the Betz limit (around 60%) ...

I think they'd better dive their stuff into little streams ... there's more potential ...

[Christophe]

Site (Lichtenstein?) http://www.greenenergy.li/turbo%203000% ... piloon.jpg

Houfalize is 50km from home ...

The drawing was done with Google Sketchup The proof :

https://www.econologie.com/forums/comparatif ... t4009.html

[Flytox]

Hello Woodcutter

I don't know if you saw that?
http://www.youtube.com/watch?v=RagPPrHUMTY

Chai not if this system is capable of increasing the output for a wind turbine but in any case, it resembles shamelessly military technology which makes it possible to dilute the heat of the exhaust gases with the second flow ... to decrease the infrared signature , the one that attracts missiles that track heat sources.
A+

[Woodcutter]

Rolalal the old thing warmed up ...

Ah well, is it that old?
Has it already been mentioned here?

More seriously: yes for the widest spectrum but they will never recover more than the Betz limit (around 60%) ... [...]

Ah? Apparently, this is not what is mentioned ...

[Christophe]

It is old in principle Lumberjack, yes we have already spoken of "wind trap".

Well if they say exceed the limit of Betz is that they are very very strong ... in marketing

The advantage of these "new generation" wind turbines is that they have a wider operating range, wind speed spectrum., and that's what's interesting because what matters is not the installed power but the annual energy produced ...

[Woodcutter]

[...] Well if they say exceed the limit of Betz is that they are very very strong ... in marketing [...]

Did you read the explanation before saying that?
From what I know (i.e. not much ...) the Betz limit is related to the attenuation of the wind speed when passing through the wind turbine, but not only, because the wind turbine in itself disrupts the wind flow ...
This is where this type of streamlined machine will play. As if it were of a larger diameter than it really is, in a way ...

[Gregconstruct]

It seems to me that the road they take with the Houfalize wind turbine is the road that comes from the village of Achouffe.
This is the village where we brew Chouffe, I regularly go there on pilgrimage to recharge my batteries

[Christophe]

This is where this type of streamlined machine will play. As if it were of a larger diameter than it really is, in a way ...

The Betz limit is to wind turbines what Carnot's efficiency is to thermal machines ... so their "explanation" I highly doubt ... in other words:



By cons completely agree on the range of wind speeds more widely exploitable ... but to see the machine it is especially the strong wind that it seems to be able to exploit ...

I think that we are always looking for more efficiency, we are on the wrong track ... The efficiency (in the technological sense) of a renewable energy machine matters, in my opinion, much less than its financial profitability ... low prices generally do not go in the same direction ...

Just a thing, how many demonstrators are there in the world?

Greg always faithful to himself ... Be careful soon you will be entitled to the name "Ecolopochtron official"!