The best wind turbine in the world! (Just that)

Renewable energies except solar electric or thermal (seeforums dedicated below): wind turbines, energy from the sea, hydraulic and hydroelectricity, biomass, biogas, deep geothermal energy ...
netshaman
I posted 500 messages!
I posted 500 messages!
posts: 532
Registration: 15/11/08, 12:57
x 2

The best wind turbine in the world! (Just that)




by netshaman » 01/10/13, 12:54

Well it remains to prove anyway ...

http://www.youtube.com/watch?v=a7VZOF5YzV8
0 x
Christophe
Moderator
Moderator
posts: 79111
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10972




by Christophe » 01/10/13, 13:10

...until proven otherwise...


Well, it's been a while since it's proven! Imagine the surface, inertia and moving mass that this model would take to sweep the same surface as a conventional wind turbine?

: Cheesy:

In the original vertical axis wind turbine family, I greatly prefer the flexibility and price performance ratio of the sail version, of which here are several models:

https://www.econologie.com/forums/un-aerogen ... t6261.html

https://www.econologie.com/forums/aerogenera ... t6740.html

https://www.econologie.com/forums/eolienne-a ... t7243.html
0 x
netshaman
I posted 500 messages!
I posted 500 messages!
posts: 532
Registration: 15/11/08, 12:57
x 2




by netshaman » 01/10/13, 13:18

Yes I know this model!
0 x
jam
Éconologue good!
Éconologue good!
posts: 395
Registration: 17/12/07, 21:53
x 27




by jam » 09/10/13, 00:39

I saw the site.
What I see different with this compared to a SOAPIUS is that the blades seem to serve both as a conventional drag and as a wing.
Let me explain. In a photo where you can see the airflow, there seems to be a load-bearing effect during part of the rotation. In addition, the vortexed outflow seems to help the next blade charging it. If the data is true, I say bravo because the limit of Betz is almost reached.

In this case there is no confusion about the swept surface unlike the robiplan.

If Remundo or Pascal want to comment!
0 x
User avatar
Grelinette
Econologue expert
Econologue expert
posts: 2007
Registration: 27/08/08, 15:42
Location: Provence
x 272




by Grelinette » 10/10/13, 16:00

It is difficult to have an opinion on the performances because all the innovators of windmills affirm, often figures in support, that their wind turbine is the most powerful of the market!

Here is another often presented as technology even more powerful (by its creators):
Image
Image
Image

To change the subject while staying ... Have you seen the fan of the manufacturer Dyson?
(http://www.dyson.fr/ventilateurs/ventilateurs-et-chauffages/technologie-air-multiplier.aspx)
It is explained that the new technology would implement a very innovative system of amplification of the airflow.
Is there not enough technology in this technology to evolve wind turbine technology?

Another question : The wind turbine site presented in this post is about "factor 8":
(http://greenenergy.li/français/le-grand ... ennes.html)
What is the "factor 8"?
Example: if there are 100 Watts present at 4 m / s, there are 800 Watts present at 8 m / sec. This means: wind speed x 2 = Power x 8! Most of the power at low wind speed is "eaten up" by the inverter and PMG. (Generator)

I had the experience of making a small, twin counter-rotating, small wind turbine with old CDs, with the diameter of the front blades being smaller than that of the back blades.
I was pleasantly surprised to see that the 2 rotors worked well in the slightest breath of wind.
Image
In short, if the "factor 8" is true, a double counter-rotating rotor makes it possible to significantly increase the relative speed of one with respect to the other for the same wind speed, and therefore to increase the capacity of production. What do you think ?

(ps: no need to discuss the DIY wind turbine with CDs that is nothing but a DIY Sunday with children! It is the idea of ​​the double rotor against rotating which is interesting)
0 x
Project of the horse-drawn-hybrid - The project econology
"The search for progress does not exclude the love of tradition"
User avatar
elephant
Econologue expert
Econologue expert
posts: 6646
Registration: 28/07/06, 21:25
Location: Charleroi, center of the world ....
x 7




by elephant » 10/10/13, 16:56

Ah, here is an idea to sell my old CDs back up! :D
Congratulations to your children.

I wonder about this idea of ​​contrarotative. Especially because one of the propellers (the one that is leeward of the other) will be disturbed by the 1ere, right?

By the way, should a blade, which is nothing but a wing, be curved to work?
0 x
elephant Supreme Honorary éconologue PCQ ..... I'm too cautious, not rich enough and too lazy to really save the CO2! http://www.caroloo.be
User avatar
Grelinette
Econologue expert
Econologue expert
posts: 2007
Registration: 27/08/08, 15:42
Location: Provence
x 272




by Grelinette » 10/10/13, 21:15

elephant wrote:I wonder about this idea of ​​contrarotative. Especially because one of the propellers (the one that is leeward of the other) will be disturbed by the 1ere, right?

The 2nd propellers are on a larger circle and still take the wind. They turn less quickly but with more torque. It is especially the contrarotativity that seems interesting to me, especially with this rule of the "factor 8" ... (video http://cjoint.com/?CJku4h1Poib )

Moreover, this contrarotativity is surely more effective on a vertical axis wind turbine.
0 x
Project of the horse-drawn-hybrid - The project econology
"The search for progress does not exclude the love of tradition"
jam
Éconologue good!
Éconologue good!
posts: 395
Registration: 17/12/07, 21:53
x 27




by jam » 15/10/13, 15:23

I believe more and more after reading the site.

This is a machine that combines a "Darius" and a "Savonius" in a single mechanism. An "airfoil" model NACA0015 is used for the blades. By distributing it at six points around the axis, the turbulence created is propagated from the front blades to the other blades, increasing the lift and drag of a few other blades. This is the reason for claiming to have an effectiveness close to the famous Betz limit.

I think I'm doing a simulation.
0 x
User avatar
Grelinette
Econologue expert
Econologue expert
posts: 2007
Registration: 27/08/08, 15:42
Location: Provence
x 272




by Grelinette » 15/10/13, 20:44

The wind turbine (which burns) in the following video has curious pale. It looks like the 3 blades are doubled (so 6 blades in total) and if we compare the spacing of these "double-blades" between the beginning and the end of the video, we have the impression that the spacing is n ' is not the same, as if the double-blades tightened with the speed of rotation. Unless it is an optical effect?
Does anyone know this system?
http://www.youtube.com/watch?v=I2NscsOj2AY
0 x
Project of the horse-drawn-hybrid - The project econology
"The search for progress does not exclude the love of tradition"
jam
Éconologue good!
Éconologue good!
posts: 395
Registration: 17/12/07, 21:53
x 27




by jam » 15/10/13, 22:09

Possible not to pollute the subject?

ps: note the mechanical reliability of the burning. Nacelle completely burned but it still turns.
0 x

Back to "hydraulic, wind, geothermal, marine energy, biogas ..."

Who is online ?

Users browsing this forum : No registered users and 208 guests