Vertical omnidirectional turbine
Spinning polamu, but surely!
It is at the hobby shop is very popular thanks to the simple design, the use of commonly available materials, and last but not least, for your easy to understand the principle. Also leaves considerable space for a creative approach in the use of different shapes and surfaces.
The basic form is dvoulopatková turbine, where they are opposite the blades the shape of a semicircle (the aneurysm) firmly attached (either directly, or through the bracket) to the rotational axis of the turbine, which is vertical to the ground.
The resulting energy causes the rotation around the axis is the difference between the energy captured bowl of the first blades and the baggy part of the other blades. Therefore, we strive to baggy parts of what at least prevent the wind in the wrap and miskovitou parts on the contrary, to capture the most wind energy.
Article about the basic division trubin can be found at: Wind turbine – basic division
In practice dvoulopatková turbine won't work, because that is framed has a dead angle.
The status of more dvoulopatkových above the other with a common axis to prevent the dead angle.
Another option is to increase the number of blades, or change the shape of the blades to the ascending helix, or to the shape of the spiral staircase.
The main advantage of vertical turbines is that they are omni-directional. It doesn't matter where the wind blows, the turbine always zageaguje. She wastes no time shooting the blades against the wind, as is the case with propeller, mnoholopatkových and Halladayových turbines. Need low starting wind, so they are able to spin from 3 m/s and the job to distract from 5-6 m/s.
It's Savoniova turbine?
There is great confusion in the nomenclature and vertical turbines are used interchangeably for Savoniovu or Savoniusovu turbine. Savoniusova turbine is an improved type of vertical turbine, but not every vertical is at the same time Savoniovou. The name of the turbine refers to its inventor Johannese Savonius Sigurdand who in 1928 he patented turbine with a negative to tension and thus greatly improved the efficiency of vertical turbines. Two blades adjacent to each other, but they overlap one over the other. In the picture in blue shown by the arrow, is part of the energy of the wind, which causes a negative pressure to the opposite blade of the turbine.
Article about Savoniově the turbine will follow soon.
Pros
responds to any wind direction = omnidirectional
start-up at low wind speed
most pomaloběžná, so less distracting sounds, safer
simple to build
Risks and limitations
- a small efficiency
- the eternal problem with the braking part of the scapula, how to solve, to hit the brakes
What's next
If you want to start experimenting, or directly put into the construction of the wind turbine, is omnidirectional ideal opportunity due to its simplicity. I mean, the easiest versions there are two slotted plastic barrels connected edges to each other in two rows one above the other:
The wind at the surface of the earth is very unstable and affect it in all kinds of obstacles like trees, buildings, hills... Omni-directional turbines are able to respond immediately to any direction of the wind and low starter speed is directly predisposes to domestic projects. The amount of diy projects on the internet testifying about the popularity of. And if you handle with vertical omni-directional, try next time Savoniovu turbine.