Wind energy turbine, has anti-icing device comprising heating device placed on blade, where part of external surface of blade is covered with hydrophobic material protective layer thermically coupled with heating device

摘要

The turbine has a rotary unit including a hub rotating around an axis, and a blade (5) mounted on the hub. An anti-icing device prevents formation of white frost on the blade. The anti-icing device comprises an electrical heating device (10) placed on the blade. A part of an external surface (5a) of the blade is covered with a hydrophobic material protective layer (11) thermically coupled with the heating device. The heating device comprises a layer of an electrically conducting material i.e. conductive paint, arranged on the external surface of the blade. The electrical heating device is in the form of a flat plate. The hydrophobic material is hydrophobic paint. An independent claim is also included for a method for preventing formation of white frost on the blade.