Enhanced thermal stability and spectral selectivity of SS/TiC-Y/Al 2 O 3 spectrally selective solar absorber by thermal annealing
| Autor: | Gang Liu, Zhi-Ming Guo, Xiang-Hu Gao, Pengjun Ma, Qingfen Geng, Aiqin Wang |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Tandem Renewable Energy Sustainability and the Environment business.industry chemistry.chemical_element 02 engineering and technology Yttrium engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry Coating Absorptance engineering Optoelectronics General Materials Science Thermal stability 0210 nano-technology business Porosity Selectivity Solar power |
| Zdroj: | Solar Energy. 140:199-205 |
| ISSN: | 0038-092X |
| DOI: | 10.1016/j.solener.2016.10.046 |
| Popis: | Exploring a high performance spectrally selective solar absorber is one of the great challenges in the development of Concentrating Solar Power (CSP). Herein, a porous structure of SS/TiC-Y/Al2O3 solar absorber is developed by a facile and scalable method combined with a simple vacuum annealing process. The tandem SS/TiC-Y/Al2O3 solar absorber exhibits a high absorptance of 0.90 and a low emittance of 0.11 after vacuum annealed at 800 °C for 5 h. Long term thermal annealing result indicates that the SS/TiC-Y/Al2O3 solar absorber coating has a good thermal stability at 800 °C in vacuum for 100 h. Due to the addition of rare earth yttrium (Y) and post-annealing, the porous structure is formed, which makes contribution to the spectral selectivity. Benefiting from these advantageous features, the post-annealed SS/TiC-Y/Al2O3 coating can be good candidate for the Concentrating Solar Power application. |
| Databáze: | OpenAIRE |
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