Spectrally selective ultra-high temperature ceramic absorbers for high-temperature solar plants
- 1 May 2012
- journal article
- Published by AIP Publishing in Journal of Renewable and Sustainable Energy
- Vol. 4 (3), 033104
- https://doi.org/10.1063/1.4717515
Abstract
Ultra-high temperature ceramics are the ideal materials for extreme conditions owing to their very high melting points and good thermo-mechanical properties at high temperatures. For these reasons, they are widely known as materials for aerospace applications. This paper presents a comparative spectral characterization of zirconium, hafnium, and tantalum carbides ultra-high temperature ceramics for concentrating solar power applications. Room-temperature reflectance spectra have been measured from the ultraviolet wavelength region to the mid-infrared band. Using these spectral properties, the ceramics were evaluated as sunlight absorbers in receivers for high-temperature thermodynamic solar plants.Keywords
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