Publication Date:
2020
abstract:
Concentrating solar power is one of the most promising solar energy exploitation technologies. Its efficiency improvement needs a significant increase of operating temperatures, from the current 500 degrees C to 900 degrees C. Alumina (Al2O3) ceramics are refractory materials characterized by a huge industrial interest, mature production techniques and low cost. In the present work, we successfully synthesized dark ceramic Al2O3 bulks, to evaluate their potential as high-temperature solar absorbers for CSP. We investigated process-dependent ceramics composition, microstructure and optical properties, obtaining pellets with a solar absorbance even higher than that of SiC. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Iris type:
01.01 Articolo in rivista
Keywords:
Alumina; Solar absorber; Concentrating solar power; Solar absorbance; Optical properties
List of contributors:
Failla, Simone; Sciti, Diletta; Sani, Elisa
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