When we talk about wind turbine we always refer to those gigantic 50m tall, 20m blade-span wind turbine. Unlike solar energy which sunlight is everywhere on the earth, wind turbines are very selective on locations and it also generates loud noise that most people won't be able to deal with.
A Dutch renewable energy start-up called The Archimedes is working on a wind turbine, called Liam F1, that is compact (weighted about 75kg and blade diameter of 1.5m), quiet and very efficient. Liam F1 is capable of generating maximum power of 1.5 kW at wind speed of 15 m/s. Even at just 5 m/s the turbine also can generate 1,500 kWh of energy per year.
Because of its screw-like blade design, Liam F1 will automatically point into the wind to capture the most amount of energy, allowing it to reach 80% of the theoretical maximum energy that could be harnessed from the wind.
The company is now working on an even smaller wind turbine, half the size of Liam F1, which can be installed on the lamppost to power the light.
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