Our Technology

The Flower Turbine is much more than just a beautiful piece of Eco-Art!

 

An Important Technological Advance

Flower Turbines introduces innovations that change preconceptions about small, vertical axis drag-type wind turbines and their role in the global transition to clean energy.

Our turbines produce clean energy from any direction in a quiet and beautiful way, allowing people to live and work next to them.

Our patented technologies enable us to fill a large and unique role in the distributed energy field.

See our official sound test report

Our Turbines make less sound than the wind

Our efficiency is high due to our innovations.

Low Noise & High Efficiency

Here you see images that illustrate our technology.

Image 1a and 1b: The air space in the middle has to be just right in order to enable the advantage of the Savonius-type design of two overlapping semi-circles to stand out properly. This enables low noise to accompany an improvement in efficiency.

In these illustrations, red is the highest velocity and blue is the lowest.  The wind comes from the left in a horizontal slice through the middle of the turbine with the shaft in the middle.

Note that as the wind enters the turbine and reverses direction in order to hit the second blade as well, the wind in image 1b reaches “red” speed in the middle but it doesn’t in image 1a. The higher the effective speed when the wind hits the blades, the more energy the turbine produces.

Image 1a: An example of the wrong air space

An example of the wrong air space

Image 1b: An example of the right central air space

An example of the right central air space
Here is a photo of the Tulip Wind turbine

Horizontal Ribs

Image 2 is a photo of the Flower Turbine. The horizontal ribs serve a bigger purpose than holding the segments together.

According to our patented formula, the correct placement of the ribs reduces the turbulence and increases efficiency.

This higher efficiency from the innovations mentioned is reflected in the lower starting speed, possibly a world record. Both inventions lead to a lower starting speed.

In the graph below on the right you see a run of data of a 4.5 meter high turbine from a location where we kept a turbine for several years in a low speed area. Most wind turbines start at 3 meters per second (x axis); at this speed, the Wind Tulip is already producing 25-30 watts.

It shows how low the turbine starts to spin, around 1,5 m/s. This is a medium size Wind Tulip; the large version produces more, and the small version less at each wind speed.

Image 2: our 3-meter Flower Turbine

Tulips low starting speed

The Cluster Effect

In general, wind turbines that stand close to each other interfere aerodynamically by creating vortices. That is why other turbines need to be placed far apart. Image 3a shows the issue with lift turbines when they are placed close together and their turbulence interferes with each other.

 

Image 3b is a graphical representation of what happens with our turbines: with red being a higher speed than the prevailing wind, since the turbines drive wind tunnels into each other.

This is what we call the cluster effect. When these turbines are placed at the right distance from each other, they make their neighbors perform 20-50% better.

Image 3a: Other wind turbines. Curlicue lines represent efficiency-decreasing vortices

Other wind turbines: Curlicue lines represent efficiency-decreasing vortices.

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Image 3b: The Flower Turbine

The Wind Tulip
The cluster effect

The illustrations above show areas of red space to the sides of the turbines. When the turbines are correctly spaced to benefit from that adjacent zone of higher velocity wind, the total power output jumps upwards.

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