Bladeless wind turbines

There wind turbine it is that device that converts the mechanical energy produced by the wind into electrical energy. The kinetic energy is transformed into mechanical energy that moves rotors attached to generators and thus electricity is produced (see also "How a Wind Turbine Works"). Exist wind turbines vertical and horizontal, floating wind turbines and more science is developing new models to meet all environmental and human needs.

Research is perfecting the field ofwind energy and a new frontier could be that of bladeless turbines. The need to develop turbines without blades arises from minimizing the visual impact with the environment but also to reduce the number of aircraft accidents and the damage that blades cause to avifauna (birds of prey and bats). Another concern caused by the blades is related to noise pollution, with the disappearance of the blades, the problem related to noise would disappear.

The wind turbines without blades could provide the right solution. Not only would noise pollution disappear and damage to wildlife would be reduced, the problem related to radar interference generated by large blades would also disappear, and maintenance costs should also be reduced. The wind turbines conventional ones should be replaced with metal discs positioned in parallel rows and interspersed with thin spacers.

When the wind flows through the areas between the discs, the passage of air will be directed towards the inside of the device where it will induce the classic rotation of the disc. The result is similar to that of the classics wind turbines, the rotation of the disc causes the shaft to move. In this case, the number of discs is directly proportional to the amount of energy generated. The result of this development is a smaller device that could be more popular for home use. Production costs are lower then the wind turbine without blades could be more commercial but the problems are not lacking: currently, there is no definitive manufacturing process. The bladeless wind turbine model just described is inspired by a Tesla project, but this is not the only alternative to the conventional ones wind turbines.

Another wind generator is the Windspire, was designed without the use of blades. The design is slimmer than that of conventional wind turbines and is also more elegant. It is safe for birds and reduces noise pollution. The device is equipped with a production efficiency of approximately 2000 kilowatts of power per year. There wind turbine it is about 9 meters high for a width of 2 meters. There Windspire it is equipped with a wireless system that allows constant monitoring to obtain complete information about the generation of energy and any drops in performance to implement prompt intervention. It produces around 25 decibels of noise and shouldn't pose a threat to birdlife. The only problem is related to production costs which are excessively high.


Disadvantages of wind turbines conventional: need to be located in constantly ventilated areas. They threaten wildlife. They cause noise disturbance. They disturb radio, satellite and television signals. Application on hilly areas distant from inhabited centers is an excellent solution to most of these problems. The only question that cannot be solved with the choice of location is the negative impact that the blades can have on wildlife.

edited by Anna De Simone

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