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

[coucou789456]

re

another type of wind turbine

http://www.polytech-clermont.fr/partena ... ienne.html

still other things

http://homepages.paradise.net.nz/albie/ ... JECTSINDEX


I quote : http://avenirlorraine.canalblog.com/arc ... 14424.html

In a post dated April 09, 2008, I reported the first production in Belgium of an aerogenerator using prefabricated panels allowing economical mass production. The model installed on a guyed mast using a hydraulic cylinder allows easy maintenance. Luc Haegeman's very beautiful creation fits perfectly into a landscaped setting, and the criticism that can be made of spinning propellers is erased by a rotation with a vertical axis. It probably remains to test the reliability of the machine under various wind conditions and to study production costs and profitability before proposing on the market the most efficient way to switch from fossil fuels to renewable energies, and to supply the energy necessary for the operation of the twin-tube cross-border monorail.

jeff

[phil53]

Here are the coordinates of the depositor of the idea of ​​departure

Hello,
Following your request:
Inventor / depositor details:

SARRAZIN CHARLES LOUIS VALERY / LA ROLLANDIERE 05250 ST DISDIER EN DEVOLUY

Good reception
Greetings
INPI Brittany

[coucou789456]

Good evening

they are really very numerous, obviously we could contact them one by one but it is possible that his number is not in the directory, to avoid being disturbed.
especially since nobody has heard of his machine since he created it, and it remains invisible, even on the internet!

jeff

[coucou789456]

re

found on forum futura sciences in february 2006

http://forums.futura-sciences.com/techn ... nne-9.html

The wind tower here is not static.
Its entire structure turns on itself, accumulating its own kinetic energy like a flywheel.
Its mass and its very large possible dimensions are useful.

Its axis is vertical, except that it has no real axis, but rests on the circle of its periphery,
- either by rail, on the floor or on a wall
- or by means of an air cushion airboat, on a liquid surface.

-------------------------

for a good project, many forms have been explored and few remain to be discovered. or then orient yourself as I was trying to do on a model that is easy to assemble and implement, and with good performance.
No offense to those who want to apply the concomitant formula to conventional wind turbines, because by exaggerating the dimensions of a system, we quickly notice that if the formula continues to work for conventional wind turbines, for a sail wind turbine, it does fall into the domain of utopia, or even in some cases, after calculation, a motor would become necessary to make it turn. (see an answer above with calculation thanks to the formula, and it remains to assess the results)

jeff

[coucou789456]

Hello

I think everything to derail from page 11 when we apply the betz formula to the system. formula specially dedicated to propeller wind turbines (horizontal axis).

even for the ecogeek winspire, the blade that comes back against the wind is unproductive, or can be with a good profile, offers little resistance, however certain incorporates it in their calculation as if it were 100% productive, like those pushed by the wind.
obviously by arranging the data in their own way, nothing could be easier to demonstrate that I had it all wrong. moreover in my system, I also had to take into account the space between the sails, not productive, on the other hand not taking into account the surface of the sails since this data does not come into play in the betz formula. therefore it is very easy to prove that the system I wanted to study was doomed to fail.
FYI, there are alternators which have their nominal power at low speed (240 rpm for 6Kw produced) and do not require a large multiplier

his speech in front of wind specialists will be quickly defeated

here is an unpleasant speech to hear, especially when you read the rest of his speech, without forgetting the sharks ... ready to crush the others to arrive!

-----------------
to consult on vertical axis wind turbines
http://www.thewindpower.net/forum/sujet345.html
jeff

[coucou789456]

apparently, some wind turbines with vertical axis, with 3 orientable blades have almost identical yields to wind turbines with horizontal axis, as long as we remain in the field of small power: 5 to 10 Kw.

beyond 3 blades, there are significant aerodynamic constraints which largely modify the overall efficiency as in the dieudonné machine.

from a certain power, other constraints come into play such as the cost price of the installation for one, and the footprint for the other.

a notable fact, even if the performance of the vertical axis system is less good than the other, the mechanical limits do not exist to the realization of a gigantic system !!! the limits are only financial, vis à vis the congestion on the ground, and the big distrust vis-à-vis a system different from a known model.

the sailors who frequent the forum or someone else who knows well the problems of propulsion with sails to practice to give us an idea of ​​what a 200 m² sail can recover in power.

in the utopia that I imagine, the sails would be mounted on lift carts on an air cushion (no friction), no draft either. the system in my imagination will be installed in a square which would have 1 km of side, of which on 3 sides, the sails could present their side: 40 sails of 200 m² of which 30 would be permanently active (in the presence of wind of course)
with 1 wind of 10 m / s
with your pencils

jeff

[C moa]

in the utopia that I imagine, the sails would be mounted on lift carts on an air cushion (no friction), no draft either. the system in my imagination will be installed in a square which would have 1 km of side, of which on 3 sides, the sails could present their side: 40 sails of 200 m² of which 30 would be permanently active (in the presence of wind of course)
with 1 wind of 10 m / s
with your pencils

I never thought too much about vertical wind turbines but I find that the system described would be enormous and that we would spend a lot of energy for the lift because of the weight of the whole (probably more than the friction of a system well thought out classic).

Idea like this (maybe it has already been done). By taking the system thought out in the video and replacing the "small" sails by sand yachts don't you think that we could develop a lot of power ?? With 4/5 tanks you would have a lot of driving power because (the specialists may contradict me) from 10-12 knots, you are already going really well, aren't you ??.

[Christophe]

Hey the pros of air calculation (o?) Lique, you do not want to take a look at my future hydrogenerator sivouplés missieurs!

https://www.econologie.com/forums/tambour-de ... t6303.html

[phil53]

It is obvious Christophe between air and water there is no question. It is much easier to recover energy from water because it is somewhat more concentrated.

[phil53]

It's obvious Christophe, between air and water, there is no hesitation. A waterfall or current is much more profitable to operate. Energy is somehow more concentrated in water.