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China has innovated once again and is bringing a mini wind generator capable of running without the use of a propeller.
A team of researchers from China have developed a kind of mini wind power generator capable of generating electricity only with light breezes of wind and without the need for a propeller, on the contrary it uses ribbons.
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Scientists in China have developed a mini wind generator capable of extracting electricity from the breeze a person produces while walking. The device, baptized as B-TENG, promises to revolutionize the generation of sustainable energy from the wind. The results were described in an article recently published in Cell Reports Physical Science.
Understand how the mini wind turbine works
China's mini wind turbine consists of two plastic ribbons, inside a tube, that vibrate or hit each other in the presence of an air flow, eliminating the use of batteries. This air flow can be obtained with a simple breath - and even from the movement of a person's arm during a walk.
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According to the researchers in China, a gentle breeze of 1,6 meters per second is enough to power the device. However, it works best at a speed that ensures the two plastic strips vibrate in sync, when the wind speed is between 4 and 8 meters per second.
“We put our nanogenerator on a person's arm and the airflow from the swinging arm was enough to generate energy,” says Ya Yang. During tests, the equipment achieved an efficiency of 3,23% in wind conversion and produced enough energy to power 100 LEDs or temperature sensors.
