Scientists generate heat over 1,000 degrees Celsius with solar power instead of fossil fuel
"boost solar receivers' efficiency attaching synthetic semitransparent quartz rod to energy absorbing opaque silicon disk as an energy absorber exposed to 136 suns energy flux... (unshielded) receiver has efficiency of 40% at 1,200°C, with concentration of 500 suns... receiver shielded with 300 mm of quartz achieves 70% efficiency at same temperature and concentration... glass, steel, cement, ceramics"
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