Wifi External Hard Drive

The strength of a wind

The strength of a wind is also its limitation. To work needs and our wind is known as the land of sun, no wind. The perception we have of this energy is mostly influenced by our habits. In the Po Valley, for example, would be required to define a windy day that the sea would be a completely normal day. Who lives on an island is accustomed to the airflow so that we do not notice it, while those used to calm can be annoying and unbearable that normally might be called a breeze. Beyond our perceptions, therefore, it is important to determine objectively the amount and speed of wind present in a given area. For this we can rely on wind atlas of Italy to get an idea on the wind in our area and the average productivity. The speed is often indicated in meters per second, and sometimes in km / h. It 'important to know that a wind turbine has its massima efficienza alla velocità nominale dichiarata: per fare un esempio, se un generatore produce 1 kW a 12 m/sec (circa 50 km/h), probabilmante inizierà a muoversi già a 4 m/sec ma in queste condizioni la sua produzione è insignificante. Cresce, invece, in modo quasi esponenziale con l'aumentare della velocità fino a raggiungere le condizioni ottimali di produzione al raggiungimento dei dati di targa. Se la velocità del vento è superiore, il generatore non produce di più, ma anzi diminuisce. La superiore velocità ingenera un maggiore logorio delle parti meccaniche e un surriscaldamento della parte elettronica. Per questo motivo i generatori inglobano uno o più sistemi, elettrici o meccanici o entrambi, atti to limit the speed of the rotor is also a safety feature to prevent high winds produce damaging stresses the entire structure. It is therefore essential to know the nature of the wind in our area, its average strength and, therefore, choose a generator that can respond as to the strength we have. In addition to consulting the wind atlas of Italy, it is good to run the tests to determine the exact location in which to install the generator, its height above the ground and then out the features.
Wind Atlas Italy