Using mirrors to concentrate solar power isn’t new, but now the tech can push temperatures high enough to be used for manufacturing things such as steel and cement. A typical large steel mill might burn through 1.5 million metric tons of coal in its furnaces in a year. It hasn’t been possible to run that type of industrial process on renewable energy, because of the extremely hot temperatures required, making nearly a quarter of global emissions hard to eliminate.

Topics:  celsius   read full story   solar   tech   steel   cement   temperatures   energy   
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