Tunisia: Revolutionary bladeless wind turbine could change game in wind farms 

Well, I'm not trying to offend anybody, but I'm pretty sure that it is impossible for that generator to have an 80% efficiency (as they say in the video). The maximun theoretical efficiency is Betz limit = 16/27 = 59%.

Oh I got 1 and 16W from the meter readings, though considering the obvious complexity [and cost] I would certainly agree.

That was the V.I supplied to the motor to make it go round and round.

They have a bigger one designed that will power 2 LED bulbs.

hmmm... 1 led..... 6 volts at .5 amps oh wait your right, soon as you plug it in that thing will stop dead

Understandable, since now you can’t drive it out of the parking spot without tires hitting the insides of the wheel wells!

Anton Nym Sorry, that runs on battery.

It couldn't even power that.

Yeah Hah,hah,.!. that was my fi rst impression

Yeah and you can't beat coal fired power stations. hahahaha

Écrivez en français c mieux

Put this design on a sail boat. If the wind pushes the boat, ask yourself if it’s efficient.

I should’ve typed boat, not sail boat.

Yes, I support you.

it will break in the first hour, after scientist have been fighting hard to perfect a rotation machine without eccentricity, lo and behold, another SCAM

Écrivez en français c mieux

It does.

totally agree, another technology SCAM

Peder skram what we cant critique stupid ideas because they come from 3rd world countries ? Are there ideas held to different standards? Your being condescending assuming anyone believes this is stupid because Africa came up with it. It's stupid because there is very little energy in air. 1/4[1.225]A*V^3 to be exact. So fundamentally to get more power than the big offshore turbines it has to be about that same size. Can you imagine a 190 m diamater dish!? Preposterous wind turbines work by using as little material (blades ) to sweep the largest area possible ( a big circle) this only gets energy from air that runs into it meaning you gotta build the maximum amount of material for minimum benefit. Fundamental laws of physics say this not just me. You cant take more energy from air than it has without sending the wind back the other way. Furthermore blockage effects limit the efficiency as solidity approaches 1 so there is no way this thing will ever pay for itself go ahead and try to dispute the fundamental physics of wind power but I'm afraid you have been scammed too

that explains why they have light bulbs that only need 1/5 of a watt to light up....

Kaipogan+ but it could retract, but you are right. I'm happy they are trying though, even a stupid idea could spark a brilliant one! quote Ben Harkness-Brown

LtHarkness187 It is not a bad criticism I am just saying cos I have experience working with wind

As an 'alcoholic' (more just relaxing to me) I get threw 1.25lt of Johnny Walker Red Label 40% maybe a little more every 1-3 days, I have to work so I stop drinking 4-hours before work its the work that stops me, but intelligent enough to know work funds this degenerative life style? Its like that catch connect 4 "uno that works" when you need work, knowing the hard work pays for such a degenerate behavior?....... well that's how hard my dick is right now..... I too have experience working with wind! they(()) their really should be sarcasm text.... for better users kek..

Jason Poole + Hence a Retractable type wind model would be more advisable and I'm sure are being analysed and tested, stupid idea's spark insanely inconceivable idea's Quote "Ben Harkness-Brown"

Yes the thing is utter lunacy. Albert Betz made some gross assumptions in his reasoning, but also drew attention to an otherwise overlooked fact. Another fact that is overlooked - particularly by "windfarm" designers - is that a Turbine has opposite " economy of size" to that of an Alternator. This makes the combined economy of size, a necklace- shaped function of Size. (on a "log". scale, i.e. x times so much per scale division) there exists a size region of lowest cost per unit of energy supplied. This is the region of size where the two components cost about the same. In my (rather large) experience, this region is around 0.5 to 1m diameter !!

Indeed, Don't forget Mr Betz!!

Drumchef hubdad ,,Yup ,very distracting,,,,, to wildlife, birds,,,and fish! Memorizing as they hypnotize their investors...

yeah, google 'tension turbine' several times more efficient than the 3 blade, and is vastly expandable.

Ronald Reed Easy to understand when you are used to a bit of international English.

Yep !! This is just supposed to make money ;-)

It seems more like a Monty Python video, than real life. I have a feeling this thing only "generates" publicity for grant money.

is there a dwarf inside to make it moving..?

@ Erik J I can only hope you're joking... First, there is no perpetual motion of any kind, it defies the basic laws of thermodynamics. Second, there is no pressurization of any kind occurring here, and even if there were (which there isn't) the "pressure" can never exceed atmosphere, 14.7lb/in^2 at sea level (where they are) and the wind being a fluid will not allow itself to become pressurized when it isn't contained in any way and will just flow out and around any supposed containment this preposterous design would attempt to achieve. Third, this video is two years old, and you haven't heard a single thing about this ludicrous design of bladeless wind turbine elsewhere... why exactly do you think that is? Keep in mind, wind turbines/mills have been tried in numerous configurations for literally THOUSANDS of years, and only now is this magical design magically appearing and so great, save for the fact that the demonstration can't light even a single bulb in the array because it displays on the multimeter at 0:45 at around 33 volts and about 0.11 amps, so maybe around 3.63 watts. Oh, and that's DC, not AC, so if you wanted to use it for a household appliance that uses AC it would have to go through an inverter, which would be "lossy" as well. This isn't me saying it's generating no power, this is THEIR OWN EQUIPMENT saying it's generating hardly enough wattage to light a SINGLE LED bulb used in a keychain flashlight. So, they are fighting against mathematics, physics, thermodynamics, and reality... which is why this scam died out over three years ago and merely managed to bubble its way back to the top of the crap heap in the last two years to make another round of april-fools.

Nobody Uknow I think you misunderstood my use of terms ... obviously PRESSURE cannot be accumulated as the air can flow around the bowl... I was referring to the FORCE of the wind, which is trapped inside the bowl like the wind on the sail of a boat. You do understand how sailboats work right? Although Sailboats have no regard for atmospheric pressure, magically the FORCE of the wind still makes them move anyway. Have some common sense bro. Additionally you also have no idea how the geometry of the toggle system and the gearing angles and other internal mechanisms are set up. It is true that is isn’t generating a lot of power, but that has nothing to do with the mechanics. The generator is obviously not efficient but again... this is a prototype and those shortcomings can be rectified. They comment very early on about the efficiency. Look at the small size of the thing. It seems apparent to me that it would be useful in situation where a large bladed turbine would not be feasible. I think that’s the point. A small footprint solution for specific situations. It’s seems evident to me that more work is needed, but I see this as a concept... not a finished product and I’m giving them credit for creativity. There must have been some necessity for them to design it the way they did. I don’t think they meant for it to replace the huge wind turbines already out there... it’s a solution for a specific situation. This is what inventors do, they work as much as they can on a concept until they need outside help, either with technical assistance or with finances. I don’t see them as scammers. How many products have you invented and brought to market? There is a difficult process to navigate. And There are countless products that never make it to market for many different reasons. To say that a lack of mass production is equal to lack of validity just isn’t true. Big corps couldn’t care least about the environment. They just want fast easy money, and they aren’t concerned with helping out small niche groups or dealing with specialized products unless they can rape people on the pricing. This is why specialty products are usually reserved for the wealthy because that’s the only way they can make the profit margin they require for niche products. obviously isn’t a fortune maker, but it could be useful in certain situations. And you’re over reaching on the single led power consumption. 3 Watts is plenty for a small led panel which can provide a quite useful amount of light. I’ve developed products in the LED industry. A Walmart LED flashlight is far less efficient than a high end set up. There are more factors than just the led itself. No one uses the DIP or bulb that you are referring to. They use SMD chips, and along with a good driver you can put out a very good amount of light with 3 Watts. In any case, I doubt that they would be tapping the juice straight off the generator, they would be charging batteries with it, which this would do just fine as is. If left overnight to charge it could charge a full bank of 8 to 12 car batteries overnight. Which could be very useful. Obviously not as a continuous power source, but as an emergency back up system. It would work for a small outpost in an emergency situation.