What Does Paddle Attachment Look Like

When it really needs a ventilation system?

The Wind is an immense natural source of energy for the production of a large quantity of electrical energy. He is also an inexhaustible source of energy and does not constitute an environmental hazard dar. The topography, or physical Oberflächencharacteristiken, can strongly influence the wind. Mountains prevent the uniform flow, channelized flow may increase local strong winds - ideal for wind generators. The usable amount of energy varies based on the year and times of day. The topography and roughness of the surface strongly influence the local velocity and frequency of occurrence of the wind. The usable amount of energy also depends on their power capacity, height and horizontal distance of the wind towers.

production of wind energy

A wind generator consists of an electric generator, driven by a windmill which is moved by wind. A windmill can be seen as a wind engine whose only fuel is the wind.

The amount of electrical energy generated by wind depends on 4 factors:

- amount of wind, the wind flows through - wind turbine diameter

- Generator size

- Systemkapazität_ The turbines are relatively simple in principle. The generator is connected through a gear with a rotor with two or three blades. The wind drives the rotor through the generator and produces electricity.

windmills

The windmill was in the 5th Century in Persia invented and used for soil irrigation.

The original mechanism has since not changed: the wind is a wind turbine drives a shaft which drives a pump, a mill or, in our time, a dynamo. The wind turbines of a wind turbine are different from the old by its aerodynamics and more efficient wing. Wind turbines are shaped like airplane wings and the same aerodynamic characteristics. The turbines drive a shaft connected to a gear. Through a series of expressions of the rotation number is increased. The rotating shaft is connected to the generator which generates electricity in a high RPM.

wind turbine types


wind turbine with horizontal shaft: one, two, three, four or more wings. The single-leaf need a counterweight to eliminate vibration. Two wings are frequently in use because they are stronger, simpler and cheaper than three blades. Three-winger, however, distribute the stresses better if the turbine rotates in a row of wind direction changes. Multi wings are in limited use due to their lower efficiency.
turbine with vertical shaft: for reasons of efficiency are also little used. The three best known are: Savonius, Darrieus and MOLINETE.
The maximum power of a wind turbine is calculated as follows: Pmax. = 16/27. 1 / 2. Pav
benefits of wind energy
• safe and renewable energy source:
• clean;
• mobile installations, the entire area can be used again in case of breakdown;
• short construction time (less than 6 months);
• autonomous and economically;



disadvantages the wind energy
• Visual impact: strong landscape changes; by
• impact on local bird areas: In-flight contact with wind, unknown effects due to changes in the habitual migration habits;
• Noise: constant level of 43dB (A)). Minimum distance of 200m worldwide must be



capacity of wind energy - the main countries


Rank Country MW
1 - Germany 8965
2 - USA 4258
3 - Spain 3335 < 0,593 (P = Luftdichte, nach Tabelle,
a= Durchmesser der Fläche der bewegten Flügel
V= Windgeschwindigkeit Die Pmax überschreitet nicht 59,3% Effizienz. Dieser Betrag wird auch das BETZ-Limit genannt und ist wissenschaflich bewiesen. 4 - Denmark 2417
5 - India 1507
6 - Italy 700
7 - Holland 497 8 - UK

493 Total Europe: 17,000 Mw Global Total: 25,000 Mw

There are globally more than 20,000 wind turbines in operation with a capacity of more than 2 trillion kw / h per year.

(Gisele Antunes Gloor)