Tan solamente ayer os hablaba de la "captación espacial" de energía solar, mediante paneles en orbita terrestre.
Como
podeís comprobar mas abajo, tambien se ha logrado (de momento son
prototipos, pero funcionan) que se capte energia, en este caso eólica,
en el espacio mediante turbinas que captan vientos a unos 300 m de
altura.
Según
el articulo, estos podria dar lugar a que la energía eólica
proporcionara el 85% de la energía necesaria en los EEUU (en la
actualidad produce el 15%).
A California company, Makani Power, was awarded a $3 million grant to further
their development of a flying wind turbine which has
90% less mass than traditional wind turbines, plus the ability to generate
electricity from much lower wind speeds than most other turbines can harvest.
According to the NY Times, even if the wind is only 10 or 15 miles an hour, the
company's device can circle at speeds of about 100 miles an hour, as the
propellers are turned by the wind, which makes it possible for it to generate
electricity at wind speeds too low for other turbines to use.
The Makani Airborne Wind Turbine (AWT) can access stronger and more
consistent wind at altitudes near 1,000 feet, which means that 85% of the US
could have viable wind resources using the device (compared to just 15% using
current turbine technology). The Makani turbine could also be deployed in deep
offshore waters, which could lead to access to a renewable energy resource four
times greater than the entire country's electrical generation capacity.
A 20 kW prototype of the Makani Power AWT with an 8 meter wingspan was
demonstrated at the ARPA-E summit,
showing off the device's core technology, which includes being able to launch
and land autonomously (launch is powered by grid energy). The company plans to
scale this up to commercial levels with a 600 kW, 28-meter wingspan model,
which is said to be capable of producing energy at a cost competitive with
coal, the industry's current benchmark for power at low cost. Makani's site claims their
technology will be able to produce electricity at half the cost of current wind
power farms.


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