A wind turbine with sails, the wind turbine at the nail!

[coucou789456]

Hello

for "Cmoa" of sand yachting, I had already written it down on paper, well here, in the forum, but it didn't spark passions.

air cushion lift will not absorb a lot of power. just read the info on the air train test between Paris and Orleans, a few years ago.

sand yachting is good, but the major problem remains to transmit the energy, or rather to be able to use it, and the orientation of the sails, and for the part facing the wind, what to do?

and for the tidal stream, unless you do like the Chinese, a dam of the 3 gorges in France with all the environmental problems linked ... the Chinese government is not like ours, fortunately, there the power decides and the people obeyed, voluntarily or not.

jeff

[phil53]

air cushion lift will not absorb a lot of power. just read the info on the air train test between Paris and Orleans, a few years ago.


jeff

This is only for you, I am not at all convinced of it. And that remains anyway a solution which goes beyond the framework of the cheap wind turbine.

[coucou789456]

re

quite, it was just an extension of what i said before, nothing more ..

have you been to this site http://www.thewindpower.net/forum/sujet345.html
where it is said that some vertical axis wind turbines have almost the same efficiency as that with horizontal axis

jeff

[phil53]

Absolutely, there are some industrialized which have quite honorable performances but that remains expensive.
I had a quote from gual-industrie, it would take me 15 years to amortize it without counting maintenance.
For an individual it remains in the domain of the gadget if you buy one at 5 or 7k € which is already not nothing you enjoy yourself but it's a bit like photovoltaics compared to the amount invested the electrical efficiency is shabby. It is better to invest in solar heating + wood supplement.

What interested me in this thread was the idea of ​​sails coupled with the idea of ​​no longer having an axis. Suddenly as it is carried by the earth we can consider a large wind turbine with little means.
Of course this kind of concept risks remaining marginal, it is also a little for fun.

[coucou789456]

re

remains a space problem that should not be overlooked.

practically for a circulation of sails (carriages) it would be necessary to use a metric railroad, ideal certainly because metallic wheels would offer only little loss due to friction.
or support with wheel (tire) and metal path on the system. despite the risk of slipping (slipping) a transmission on and through each wheel should be possible without too much difficulty.

for good stability of the sails, fairly wide carriages would be necessary, especially when they have a cross wind.

problem with a system on the ground, there is too much swirl and not enough wind. ideal to raise it, but may not be more than 2 or 3m ...

jeff

[bobono]

Another new way of producing with wind.

http://www.letelegramme.com/gratuit/gen ... 489308.php

[bham]

More details here: http://www.windcap.fr/notice%20commerciale.pdf

http://www.wiki-brest.net/index.php/Windcap

http://www.windcap.fr/Presentation.html

http://www.bretagne-innovation.tm.fr/in ... te_id=1219

http://www.youtube.com/watch?v=VJPeXta0 ... re=related

[Lietseu]

Hi guys, I remind you that the "wind generator" we started talking about is already generating current with a 1.3M / S wind, (I doubt it is kilometers per hour) so we can imagine that the the most interesting development would be to find an automation of the sails ... Not to make it turn since it already turns as it is, but simply to automate the regulation in the event of changing winds ...

If, of course, you are thinking of a few much larger things, what benefit other than colossal power could one derive from it? which of course is not negligible!

Do not lose sight of the difficulty of construction, when we talk about rails, we are talking about tons of metal!

And as I said above, who can afford among us to build something as big as the one seen on the video ...

Of course if we speak only of a theoretical level, the discussion remains nevertheless terribly interesting.
But in my initial idea, it was to build the machine, I have a candidate, who wants to remain anonymous, who said to me: "there is only to build it!" And knowing "the animal "he is indeed quite capable ...

That was the thing I wanted to clarify to be sure I was understood.

With greetings from Lietseu

[C moa]

Hi guys, I remind you that the "wind generator" we started talking about is already generating current with a 1.3M / S wind, (I doubt it is kilometers per hour) so we can imagine that the the most interesting development would be to find an automation of the sails ... Not to make it turn since it already turns as it is, but simply to automate the regulation in the event of changing winds ...

From you to me it is not the most complicated since the motors already exist on the equipment that is presented.

What is needed above all is to determine the capacity of the generation to accept changes in its load and the maximum pace with which we can enter and exit the sails. Only then can we determine the type of regulation to be installed (necessarily closed loop but between simple proportional and PID it is to be seen). Do we regulate according to the wind ?? according to the "instantaneous" energy produced ?? ....

Do you have more information about the baby?

[Lietseu]

Alas no, it was impossible for me to locate this dear Mr. Sarrasin.

Without this information we can only speculate which is not really neither the place nor the goal, so ...

I therefore take this opportunity to reiterate my would there be a distinguished econologists, who would live in the region of Nice, and who could find us this character? ...

Of course all that does not prevent us from thinking of other solutions, and who knows, imagined a device even better screwed up than that!

With my most courteous greetings