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Compare the speed with which the headrest will swim to the surface of the sail of 10 m ^ 2 and the wind of 5 m / s.

And now a windmill with a diameter D = 3m and also velocity of 5 m / s, which gives the power of 0.3 Hp.

and serve to drive the screw boat.

Now compare that with the boat that run much faster ???

It seems to me that, however, by usin 'the wind turbines are inefficient and primitive.

But surely the best helicopter pilots know that the strength of fast-rotating propellers is huge ..

Andrew:-" :-"

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Try to follow the logic in my post. If you keep making the venturi constriction smaller the power goes up and up. Wrong! You cannot get something for nothing. There is only so much power in the wind flowing through a given cross section area and conservation of energy says the power will not increase as you move along a venturi. A good windmill will extract 50% of the available energy from a given cross section area of wind. There is no magic that will increase that by a factor greater than 2, in fact 59% is the (Betz's Law) limit for wind turbines of any type so modern wind turbines can achieve over 80% of the theoretical limit.

Oh yes, this theoretical limit of 80%, but for the most primitive machinery ?

And there is an error in assuming that we count the most primitive machine.

Plain sail is much more perfect than a windmill.

And here we see that the wind has a lot more energy than even 100% of the energy windmill

See how high can the waves rush in, only at the surface, blowing. The waves are also wind energy

The nozzle wenturi use all surfaces of the input, multiplied by the weight of the wind (the amount of air flow in kilograms)

And it is this mass air flow causes the nozzle is formed in high speed. Even after leaving the nozzle cone is longer than the cone input. The air mass of his "draws even more through the nozzles

This is just like a sports car exchaust tubes . When calculating the length and diameter, are taken into account also the mass of gas flowing.

And there is no mass flow of great importance in the calculation of the weight just pulls out their remnant gas from the cylinder, and even causes an inflow of fresh air. Without any widmil.

Note that in my last example, is given by the mass flow entrusted Venturi. And it amounts to 48 tonnes per second. It is the burden of two wagons loaded in 1 second.

A pipe with a length of 500 meters and a diameter of 100m, at a speed of 15 m / s

there is a 1600 tons of air, which has its energy.

This is the weight of two freight trains. Try to stop them. Ride at 50 km / h

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Regards Andrew:-" :-" :-" :-" :-" :-"

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Read the article. This is the absolute truth and applies to any wind turbine.

It might take a while to get your head around Betz's law, but unless you do, you are not in a position to dismiss it.

EDIT. By the way, 16 MW is the TOTAL power in a 100m diameter disc in a 15 m/s wind. Any machine extracting more than that has disproved the 1st law of thermodynamics - a perpetual motion machine.

I'm not an executioner. I help people with this type of issue for a living.

Well, that warning was fuller, that I give you that for a Venturi entrance diameter of 100 m and wind speed 15 m / s flows as much air and treatment by 230 pieces CF6 engines of Boeing.

However, one more proof that the sails are much more efficient than the windmills.

Last Polish sailing ship "Fryderyk Copin" broke the mast in the North Sea and towed to Falmouth.

http://www.fryderykchopin.pl/?id=o-zaglowcu⊂=dane-techniczne

As you can see in the data sheet, the speed of an internal combustion engine Hp Scania 538 is 9 knots.

However, a sailing speed of 16 knots. Sails area is 1,200 square meter..

Obtaining such a ship speed of 16 knots just by driving it through the internal combustion engine would involve a minimum of about 2000 Hp.

However, the speed of the ship has been on their sails, even if it sails can not be exactly perpendicular to the direction of swimming, because it would obstruct each other with the wind.

So I have to be at a high angle to the direction of flow, which also means that only part of the force obtained from the sail, pushing the ship forward.

We can assume that the pool surface that can sail power forward. That is, 600 square meters.

This ship has the speed at 12 m / s wind.

And now Let's calculate how much, under the windmill can give us an area of 600 square meters of the wheel at a speed of 12 m / s

6 About the same perpendicular usable space as the ship sails00 m / 3,14 =191 , 191 sqrt =13,8 m , 13.8 X 2 = 27 m D widmil.

About the same perpendicular usable space as the ship sails.

Well, now we calculate how much power will give us a windmill with a diameter of 27 meters and wind speed 12 m / sec.

(12 x 12 x12 x 27 x27 / 1530) 0,4 = 326 HP

As you can see from the calculations where the power produced by the windmill is several times smaller than the engine power needed to flow the speed of 16 knots. (Teoretical 2000 Hp)

So you can tell from this example that the power produced by a windmill is 6 times smaller than the power produced by the sails.

or even this theory, the 100-meter windmill has 16 megawatts of power theory is not the absolute maximum power which disposes of the wind flowing through it.

According to this calculation gave the sails to six times more, - 30 megawatts.

Yes, I recommended that slowly read the theory about the new use of the wind ...

New widmil theory

However, the perpetual motion I would be careful. Because God every day we founded the thunderstorms. You know how much there is electricity? and does not need to use either sail or wind, in order to make electricity out of nothing.

And new dixieland:

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Regards Andrew :D

Happy Halloween !

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It is proposed to be called Venturi widmill: " The Cube Turbine "

Do you know that such a large cooling towers at power plants are made of reinforced concrete walls with a thickness of 12 cm on average?

I'm very curious if that work well, though for that tip wentturi Inject and burn some fuel.

The calculations on the calculator Venturi, that, if the temperature of the air flow would be about 60 degrees Kelvin higher, the speed of the jet that increased by 50% !

If this is not too much to add, that was such a low temperature turbine engine

During low-wind, he could give a little energy.

It was like a ramjet engine

ramjet

jet helicopter

Well, such a complete install on the mountain. Would give as much energy as the whole of Poland produces.

Sniezka

Regards Andrew:-" :-"

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And again, a mistake...

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And to be towing a boat areostar....

And in the middle of a venturi nozzle areostar with two such fans...

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Merry Christmas to everybody

Andrew :-" :-"

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or" Twin Feliks "

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or other new patents...

The cylinder can be made from an aluminum extrude...

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Regards Andrew#-o

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The wind energy. Harrier is driven by the wind, the helicopter also...In order to receive a flow venturi nozzle which is in the engine Harier ( 200 KG / sec ), then you need only 6 meters in diameter and 25 length.... and 5 m / sec wind...

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With the movement of 200 Kg / sec Harrier has a string of 10 000 KG....

Andrew:-" :-"

http://fleep.com/earthquake/

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QUOTE (Greg Locock @ Mar 29 2011, 21:25)

Step back from the equations, and think about what would happen if you put a disc with a hole in it up to the airflow. Now stretch the disc out along the axis of the hole. All the air in the disc bit will be still 'see' disc ahead of them, not the hole you'd like them to go for. A big wodge of stagnated air will build up ahead of the venturi. For the equations just use continuity and Bernouilli, for the lossless case./QUOTE

In this reasoning, the disc does not have thickness. The reasoning for the classic windmill, to which all are used: flat disk, with virtually no thickness. Therefore, the classic windmill has a low efficiency, because this disc is not dispensed air mass and its speed is only such as wind.

The venturi nozzle are two cones and a not insignificant thickness of 25 meters. And now this whole mass of air that is housed in a venturi nozzle is involved in the flow through it. It should be noted that the cones are of unequal length. Cone output is 30 % longer than the input... why? Well, because this is the output cone of doing it at low pressure in the narrowest point.

With reduction in pressure, is involved the whole mass of air in which the output is a cone, that is, the average disk X 16m. Cone can not be shorter because they do not provide laminar flow, which is a prerequisite for good work Venturi nozzle. With disorders of movement ( for a short cone ) in action will take part, only a small mass of air, to lower pressure. The condition is llaminar flow, because the cone has to be quite so long. For that produces a significant vacuum in the narrowest point, causing fresh air to the input cone...

Andrew:-" :-"

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If they move to the Thames or Potomac River this venturi nozzle:

D=1 meter, L = 5 meter V min 0,6 m/sec V max 6 m/sec , Flow 500 kg/sec .....

A little electric power can be done...

The same goes for the sea tidal and sea currents.

Regards Andrew

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Animation showing how using venturi nozzle drives the gyroscope to the flight instruments. Historically, the aircraft was not an electric current...

But now, if we do the jets in the right size, we thus also powered electric generator...

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Even used a double Venturi nozzle, in order to increase the vacuum to best drive "turbine"

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Regards Andrew:-" :-"

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I still have some of the existing achievements Venturi Nozzle:

http://books.google.pl/books?id=RNTvti6Vmd...uri&f=false

http://64.201.227.3/~sk/J-1_All_ProductBroch.pdf

http://www.pdfio.com/k-214799.html

http://www.nitech-vac.com/products/ejector...am_ejectors.htm

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I think that the next step will be to manufacture large quantities of electricity from wind, by the use of Venturi nozzles

Andrew:-" :-"

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The Underground Windmill.

Underground windmills will be an really new alternative to the Atom

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Regards Andrew #-o #-o

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In Other Technical Forum :

That Venturi nozzle feeding a windmill-turbine is a really interesting concept.

One of the problems with current windmills is that they must be constantly pointed to the wind, not only to optimize energy generation, but also lest they might sustain some damage.

A set of nozzles, say in a six or eight pointed star arrangement, could feed a fixed windmill, which as you suggest, could now operate in a horizontal plane and be sustained in rails or whatever.

The nozzles, being quite solid structures, can take side winds, and one would just need to open/close the appropriate valves within the nozzle star at the right time depending on the direction of the wind, much easier and faster than rotating a whole windmill with the wind. One could also combine any number of such tunnels and stack nozzles at different heights.

The wind capturing device and the energy generating device become effectively uncoupled from each other.

About something that you think? :D:D

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Andrew :-" :-"

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Total power in the wind.

Power = 0.5 x Swept Area x Air Density x Velocity3

from http://www.reuk.co.uk/Calculation-of-Wind-Power.htm

http://www.reuk.co.uk/Calculation-of-Wind-Power.htm...

In the Wikipedia is a big mistake or inaccuracy

Call it what you think.

Now why is that:

Kinetic Energy = Mass x 0.5 x Velocity2 It is certainly true.

But when it comes to the calculated mass is no longer referred to as:

Mass / sec (kg / s) = Velocity ( m / sec ) x Area ( m2 ) x Density (kg/m3 )

In my opinion, if we count the mass, we must indicate the volume of the cylinder, which is in addition to its surface and its length.

Here, due to an error or a" shortcut calculations" assume that the length of the cylinder is equal to 1.

But it is not always true mass depends also on the length of the cylinder, because they can be 50 meters.

Of course, if you will take part in the formation of energy.

Even in a new traditional windmill blade width can have two meter, and now the model is invalid.

  But because the masses are Surface x L x Density. Always.

Well, where we have L ? #-o

Regards Andrew :-" :-"

By the way. What has to calculate the speed of her weight? :-s

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I think that after good designing and making such a clutch, we are having a chance to the clutch for entire living of the car.Before the dismissal solenoid,, "green pins" must have the maximum electricity which with pressing a clutch pedal will be reducing. Of course this electricity and steering must reach the clutch through of collector rings, since the clutch is turning.So that this closing proceeds in a "stress-free way", one should add the electronic sensor which he will be detecting, or the flywheel in relation to the clutch isn't already rotate, and it is possible to put down solenoids controlling locks so that they connect on "hard" these two parts .

It is supposed to be similar acting to the synchronizer of the gearbox.

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