Novel Mo–Si3N4 based selective coating for high temperature concentrating solar power applications
| Autor: | Eva Céspedes, Leo Álvarez-Fraga, Ramón Escobar-Galindo, Carlos Prieto, J.A. Sánchez-García, Men Wirz |
|---|---|
| Přispěvatelé: | European Commission, Universidad de Sevilla. Departamento de Física Aplicada I |
| Rok vydání: | 2014 |
| Předmět: |
Parabolic trough concentrator for CSP technology
Materials science Renewable Energy Sustainability and the Environment business.industry Energy conversion efficiency engineering.material Concentrator 7. Clean energy Solar mirror Selective coating material Surfaces Coatings and Films Electronic Optical and Magnetic Materials Low emissivity Optics Coating Solar absorber cermets engineering Parabolic trough Optoelectronics Thermal analysis business Solar power |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 0927-0248 |
| DOI: | 10.1016/j.solmat.2013.12.005 |
| Popis: | A novel selective coating material based on Mo-Si3N4 has been investigated for the first time. Accurate combination of the individual component layers based on optical simulations and precise control of layers thickness and composition leads to high solar absorptivity (α Sol=0.926) and low thermal emissivity (ε25 C=0.017) on a silver film, resulting in a high solar thermal energy conversion efficiency. The tandem absorber is stable in moderate vacuum at temperatures above 600 C showing low emissivity (estimated value at 600 C is ε 600 C=0.109) evidencing its relevance for high temperature solar selective applications. A full optical and thermal analysis of a parabolic trough concentrator (PTC) system confirmed the potential of the novel coating material to be used for CSP technology. © 2013 Published by Elsevier B.V. All rights reserved. This work has been supported by European Commission under HITECO Collaborative project contract no. 256830 from the FP7-ENERGY program. |
| Databáze: | OpenAIRE |
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