Skip to comments.Solar Aero's bladeless wind turbine
Posted on 07/31/2010 9:04:59 AM PDT by Abathar
A research company in New Hampshire recently announced the patent of their bladeless wind turbine, which is based on a patent issued to Nikola Tesla in 1913. The Fuller Wind Turbine developed by Solar Aero has only one rotating part, the turbine-driveshaft. The entire assembly is contained inside a housing, so that this turbine offers several advantages versus blade-style (primarily horizontal-axis type) turbines. With a screened inlet and outlet, this turbine does not present a danger to wildlife such as bats and birds. To an outside observer, the only movement visible is the entire turbine housing as it adjusts to track the wind. This also makes it a good candidate for use near military surveillance and radar installations, where moving blades would otherwise cause difficulties.
According to the company, the turbine is expected to deliver power at a cost comparable to coal-fired power plants. Total operating costs over the lifetime of the unit are expected to be about $0.12/kWh. The turbine also should have fewer maintenance requirements, leading to lower lifetime operating costs. The turbine itself can also be supported on magnetic bearings, and all of the generating equipment kept at ground level, which will also make maintenance easier. The company estimates "final costs will be about $1.50/watt rated output, or roughly 2/3 the cost of comparable bladed units."
(Excerpt) Read more at green.yahoo.com ...
Tesla patented this almost 100 years ago, interesting concept if I understand it correctly. This could reduce the bird chopping ginsu blades and low frequency thumping of the current turbines we are using. It is probably much safer for all involved also if you have ever seen one of the current style turbines self destruct.
Bladeless fans on the market for home use; had never seen one, until recently and they are quite amazing and have a fine asthetic, especially, for a fan.
Dyson makes one. I was at a store and felt this breeze hitting me, I was looking around to see where it was coming from and there was this round ring sitting there.
Thought it was kind of cool until I spotted the $300 price tag on it, that kind of cooled it coolness for me.
Sounds like they are planning on marketing a version for homes and farms based on what I read at their website:
“Reduced life-cycle costs make the unit desirable for urban rooftops and for use where support and maintenance infrastructure is limited.”
Was the Dyson fan really as good as they make it sound?
I was interested in purchasing one, not to use as a fan per-say, but just to study its working.
I cannot understand how they managed to produce a powerful breeze by using a base-mounted fan blowing air through an annular ring. It just doesn’t compute.
If they can make the technology work and cost competitive, we will see things like this on rooftops across America.
A very big if.
Revenge against the government.
How can they tax utilities if you don’t use THEIR utilities.
That’s probably why it’s $300. Lots of research and design.
If you live near a Best Buy Store you can see them displayed.
Dyson may have something to say about this.
Already selling a home based product.
It is really neat, a steady stream of air with no pulsations in it, rather like a steady breeze when you are up close.
It’s not the resonating frequency you get from a regular fan like the commercial says, once you know to look for it you realize it’s not there.
He got the patent issued so it must be different from what Dyson is using.
Neither the picture, the diagrams or the explanation provide meaningful description of how this works. None demonstrate airflow transference to torque or even direction of flow. Can anyone explain this better?
1) If it has a rotating turbine-driveshaft, even internal, you can’t say that it has “no moving parts”.
2) Those wind screens will significantly reduce the energy available.
3) The “bird kill” thing is way overblown anyway; outside of Altamont Pass, which was built in just about the worst place you could put a wind farm with just the worst turbine design you could have used, it’s a minor issue.
There actually is a wind power generator system with no moving parts (with the possible exception of pumps), although it’s not a turbine. There’s a type of electrostatic wind generator. Water droplets are allowed to blow off from sharp protrusions at high altitude. They land on another electrode or on the ground, building up an electrostatic potential. That is, to say, any small natural negative charge on the tower tends to negatively charge the droplets due to the tight field lines, which amplifies the charge differential when they’re blown away. The wind does the work of separating charge by pulling charged water droplets off. I’ve seen one design proposal for this that suggests condensing the water and using the system for desalination as well.
I’d like to point out the opposite use of this device, and one that may be just as valuable.
That is, as created, it turns airflow into mechanical energy. Why not use it to turn mechanical energy into airflow?
A conventional, and popular, device that does this right now is the centrifugal fan, as is used in swamp coolers.
But there may also be a future for centrifugal fans in a new class of aircraft, called the FanWing, which is alleged to be more efficient than a helicopter, with greater lift, quieter, and mechanically simpler.
Now here’s the big question: How does the flow rate of a *reversed* bladeless wind turbine compare to that of a bladed centrifugal fan?
If it is as good as, or better than a centrifugal fan, it could very well end up producing powered flight in an aircraft.
Look at the base and you will find a small fan.
“How can they tax utilities if you dont use THEIR utilities.”
Easy, put a tamperproof meter on it and demand payment using the same threats we already have to deal with.
We live in the sticks and we have our own water well. There has been talk about putting meters on such wells and charging us for our own water.
Should this occur, I WILL sneak in a hidden well, and hope that I can afford the penalty if I get caught. They seem to be hell bent to make crooks out of us.
Nope, completely different concept. There are no fins like that at all in the unit.
Vertical axis windmills should be looked into more. They go back thousands of years and I doubt they will chop up birds. Much simpler to build. Build them at ground level, don't mess with expensive towers. I would build two or three close to the ground instead of one tower. I would use tough nylon canvas for sails. It could be made very cheap
And they are good for supplying a houses electricity...some of it at least
Figure 1 A Sketch of an early Persian Vertical Axis Windmill.
Dyson's fan creates wind, this device catches the wind to generate power.
I have seen sketches of those used for water pumping from a long long time ago. The only problem they have is if you have a Midwest thunderstorm come through without being there to stop it chances are you will be picking it out of your neighbors tree.
It’s a Tesla Turbine. Experimenters have been building them for years. Google “Tesla Turbine” or look it up on YouTube.
The problem with the Persians is that they really ARE engineers.
“Wow. A squirrel cage blower in reverse to become a wind turbine. Big deal.”
No YoYo, it’s not.
Bump for later reading
It probably works like an ejector pump. Deep well jet pumps use this principle. A high speed jet of fluid (air, water) will accelerate the fluid around it thereby moving a larger quantity at a lower velocity.
Dyson uses a ring shaped jet to “pull” more air through and around the ring. Neat execution.
If you have access to a garden hose try this experiment. Run enough water on the pavement to make a puddle. Try for 6 feet diameter or larger and at least 1/2” deep. Set the hose nozzle on a high speed jet position, hold it close to horizontal and aim the stream at a point about 1/3 of the distance across the puddle. The stream will hit the puddle and continue, pulling additional puddle water with it and eventually emptying the puddle.
Voila! an ejector pump.
Try a net search for their patent.
Fascinating - looks just like the Persian one. Identical.
Who stole what?
Yup. Going Galt, one day at a time.
Do you have any idea what that would weigh on a plane?
There are parallel disks on a shaft that are spaced a small distance apart. Air is forced into the outer edge of the disks and makes its way out of the center where there are holes to allow the air to escape.
The basic principle is that it uses the boundary layer(friction) to rotate the disks. A typical turbine redirects air to generate torque while this turbine just uses the drag on the disks to generate torque.
There is tons of info about this on the web. Its a favorite project of Tesla junkies.
I’ve got a birdbath that I clean by directing a stream of water at the inside edge. Amazes me that it spins all the water out within seconds, taking all the leaves and crud with it, resulting in an empty bowl. Similar idea to what you’re saying in your experiment.
For something really interesting google -— maglev vertical axis
This design has much reduced friction because the wind catching part is magnetically levitated
You know what I got from this thread?
I am going to get an old squirrel-cage blower, and a chevy alternator, and make a windmill for my cabin.
Hey, it will run a light! LOL!
Wow. A squirrel cage blower in reverse to become a wind turbine. Big deal.
Exactly! I posted before seeing your post sorry.
That certainly sounds like it would be a challenge.
This is to no poster in particular but just a note on a common misperception regarding patents.
One can’t generally patent an idea or an effect. One can patent an application of an idea if the idea and the application are described in such a way that there is only one device that would result from that idea (an embodiment). If one describes the idea but not the application and so tries to patent the idea, it usually isn’t recognized.
BTW... I wouldn’t even try to get a well driller involved.
I have what I “think” might be a spring. It’s not near my well.
Using a backhoe I have on my tractor, I have dug down about 6” from what was always a wet spot in a field. I would have gone deeper, but it turns to solid rock, large and thick shale rock.
I have dropped a sump pump into the water filled hole and every time the pump takes the level down, about 40 minutes later, the hole is full of water again. This occurs even during the driest part of the year. The water is clear, smells good and it’s very cold.
I don’t know anything about this stuff, but I think I might have a spring and if I do... there is my extra water source. ;>) At the very least, it seems that I should be able to bury a storage tank in nearby soft ground and use the source to keep it filled for gardening water.
Well, a centrifugal fan, like any other motive device, would have a weight to power ratio. Its blades would be considerably smaller and lighter than a prop or rotor, because the the distribution of force across them.
Plus, they could use easily machined titanium alloy instead of much heavier and more expensive materials. And the length of fan blades per section would only be limited by the structural strength of the blades over the given circumference of their barrel, and the strength of the barrel.
Its biggest gain would be by having a much simpler engine and likely computer control and stabilization. Other than that, just a joystick control.
I’m less a fan of the fanwing design prototype, because it is too reliant on prop aircraft design, where it doesn’t really need such a design.
Sure a bird pinned to the screen as the jet rises to 40,000 will not be harmed.
Sure a bird pinned to the screen as the jet rises to 40,000 will not be harmed.
Also, the electric companies would be decreasing their own business. So they probably won't allow the things to be sold, but leased and metered.
In many places it is illegal to capture rain water that lands on your property. They will probably tax you on the capacity of your wind generator"
Not a big one; just 'table sized' model, that I stood in front of - and enjoyed breeze - then, of course, had to put my hand through center just to make sure/sigh. . .
Reminded me of some 'great leap' from the past. (And given, Telsa's determinations; it is, really. . .
Loved the 'purity' so to speak; of this great design/MO. . .while wondering 'how it is' we never had this!