The wind propelled air compressor by Teseo incorporates uses a wind generator with horizontal rotation axis, consisting of a spindle running on ball bearings, that supports three aluminum blades and is connected to the shaft of the air compressor. This wind generator is mounted on top of a high aluminum framework by means of a swiveling arm. The generated compressed air is carried through pipes to a reservoir at the base of the supporting framework, and then is stored in large pressure vessels. This innovative solution offers significant benefits: it uses clean energy from a renewable source at zero cost; it is based on very simple and cost-effective equipment; it is independent of wind direction and it produces energy even at low wind speeds; it allows to store energy as compressed air in vessels; and the whole system is made of aluminum, which is 90% recyclable. An electronic and pneumatic device secures the generator in case of excessively strong winds. The system is based on a dynamo that, besides measuring wind speed, also generates electric power. This current feeds an electronic card connected to a pneumatic solenoid valve, which controls a brake that slows down and stops the blades in adverse weather conditions. An optimized blade profile has also been identified, obtained by extrusion. The new design is suited to operate the generator even with low-speed winds. The generator starts running and producing energy at a 4 m/s (Beaufort scale 3, corresponding to a “gentle breeze”, while moderate wind blows at 6/7 m/s). The ideal wind strength for the generator is 10 m/s, Beaufort scale 5, called “fresh breeze”. Edited by Constanze Schmitz
