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Vertical wind it is what we talk about with the nose upwards looking at wind generators, in fact, which transform the aerodynamic energy produced by the wind into mechanical and then electrical energy. The process involves steps that waste energy, even up to 70%, especially in the first phase. The one in which theaerodynamic energy captured becomes mechanical.
It is all a matter of maximizing aerodynamic performance, therefore, or almost, and it depends on the technologies developed and available. In this game of efficiency, the dilemma between vertical and horizontal.
A vertical wind generator it is characterized by a structure with few moving parts, withstands strong gusts of wind and is able to exploit it by "not caring" about the direction. That's why compared to the horizontal, thevertical wind power it is considered very versatile and more suitable for domestic use, but it is also useful and good for the centralized production of electricity in the order of one megawatt.
Since 1920 we speak of vertical wind power, often left aside due to the lower efficiency compared to the horizontal (-30%) but the competition has been open for several years now. Also because today it has its parts to play and show advantages such as the lower initial cost, the ability to integrate better into landscapes, lower noise and the precious possibility of multiple installations in a restricted area.
However, I am not silent on the fact that the competitor ofvertical wind power for its part, it has lower maintenance costs and requires lower wind levels. In some cities of the world thevertical wind power is installed with "mini-systems" directly to the light poles to power street lighting, a sign that we are gradually learning to appreciate and cultivate the advantages ofvertical wind power.
Mini or small vertical wind turbine
It is about vertical wind power of small size, systems suitable for domestic use or to integrate the electricity consumption of small economic activities with single generators to be connected to the electricity grid or to storage systems.
Mini and small means a height of less than 30 meters: they are plants of vertical wind power different from large wind turbines also because they are able to operate economically with a wind speed lower than those required for "huge industrialists".
Unwritten rule for these implants is to place them at least 10 meters higher than any tree or building within 150 meters so that they are higher than anything obstructing or slowing the wind or generating turbulence.
Vertical micro wind
The vertical micro wind and therefore manages to supply less than 1 kW. It is usually used for campers, camp kitchens, field hospitals, to power laptops on beaches or campsites; sailboats, yachts.
The vertical micro wind shows problems with turbulence and in inhabited areas, villages or cities, it almost never manages to generate significant quantities of current so it is often combined with others renewable sourcesthe as the photovoltaic, diesel generators, or small hydroelectric.
In short, we must not expect too much, but not even despise it because the vertical micro wind it is precious when you need a small amount of power in "strange" areas, for example for a fluorescent lamp, ecological refrigerators, fans. Of course, let's not connect it to ovens, hairdryers, water heaters or washing machines.
Vertical wind generator
THE vertical wind generators and horizontals have been the subject of studies and developments since 1985 and today reach a power of around 3 megawatts, with a typical market installed power of around 1.5 MW, with a minimum wind speed of 3-4 m / s.
THE vertical wind generators they do not depend on the direction of origin of the wind, unlike the horizontal ones, and need a wind of at least 3-5 m / s but when it reaches 20-25 m / s they block themselves for safety reasons, with brakes that block rotor or making the blades no longer take the wind.
The problem around the vertical wind generators is the visual impact of the blades on the landscape. For the rest, even if the rotor revolutions per minute vary like the wind speed, with gearboxes it is possible to make the generator rotor speed constant, also allowing an easier start in weak winds. The rotor of the vertical wind generator it is also connected to a series of converters because before putting energy into the grid, it is absolutely necessary that the frequency be constant. In Europe at 50 hertz.
Vertical domestic wind
The installation of vertical domestic wind it is closely linked to the way of conceiving buildings and housing structures. For the rest, the plants are accessible as relatively prices and one can be interested in facilities and advantages.
It is necessary, appropriate and recommended to keep an eye on and inquire about incentive plans state implemented by the EU and implemented by our governments. Then it depends a lot on "home where", on the area in which we live and on the air that pulls in our parts, not only in the sense vertical wind power.
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