Photovoltaics more efficient in the world? It is based on an invention of … – TGCOM

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14:40 – Putting together an invention of the nineteenth century and a military technology, a Swedish company has managed to build a photovoltaic system that establishes a “world record” in terms of energy efficiency. It is a parabolic mirror that, combined with the engine invented in 1816 by Scottish clergyman Robert Stirling, enter into the electricity grid 32% of the solar energy received, about twice that of standard photovoltaic panels.

Two giant solar mirrors – The only such installation of this technology was carried out in the Kalahari Desert in southern Africa, where the Scandinavian company has raised a photovoltaic concentrator consisting of two large parabolas, the diameter of 12 meters, covered with mirrors. These are intended to reflect sunlight making them converge in one place and going to feed a hot air engine designed by Stirling.

The invention of Stirling – Designed to early nineteenth century as an alternative to steam engines, the external combustion engine of Robert Stirling operates in a closed cycle using a gas such as thermodynamic fluid. Its commercial development took place for the first time in 1988, by a manufacturer of submarines for the Swedish defense.

The environment – The system converts 32 % of solar energy into electricity, grid, while the solar panels normal stop at 15%. According to a test conducted in the United Kingdom, a single dish can generate between 75 to 85 megawatt-hours per year, enough to the needs of 24 families. In addition to energy savings, however, the plant reveals an invention “green” in the round, as they do not require water to function and entails a reduced consumption of land.

TAG:

Sweden

Ripasso

Africa

Kalahari

Robert Stirling