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News Link • Energy

Solar panels made three times cheaper and four times more efficient

• gizmag.com
Everything from growing photovoltaic crystals, applying special coatings or using carbon nanotubes teases us with cheaper, more efficient solar energy - eventually. In this latest news, scientists are using current technology in a new type of concentrating array which they say is four times more efficient and three times cheaper than current solar cells.

The technology was originally developed at the Royal Melbourne Institute of Technology (RMIT) and will be commercially produced by a spinoff company called Technique Solar. Each solar module consists of nine "troughs" that feature a concentrating acrylic lens and reflective walls to focus the sun's rays onto a strip of photovoltaic (PV) cells, which enables the number of PV cells to be cut by 75 percent. The PV cells are used to generate electricity, while a heat exchanger located under them is used to generate heat for circulating water and storage tanks for a hot water system. Additionally, to maximize the sun's rays the array has a motor drive mechanism with tracking sensor to follow the sun.

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