A university in the Netherlands debuts a wind turbine without blades, which means it produces no noise nor even casts any moving shadows.
The Dutch architecture firm Mecanoo recently installed the EWICON, or Electrostatic WInd energy CONvertor, which turns wind energy in electrical power without moving parts at the Delft University of Technology:
The Ewicon can be installed on land or sea, and can also be integrated in the roof of a tall building. The principle is as follows: Using high voltage, electrically charged droplets of water are produced in the horizontal elements. At the same time these horizontal elements, which are electrodes, generate an electric field. As the wind forces the electrically charged droplets against this electric field towards the earth, the converter is charged to DC.
This video also explains how the concept works:
This new type of wind turbine might be especially welcome in urban areas, where some opponents have complained about the noise and the repetitive shadows a traditional turbine casts.