Novel Mo-Si3N4 based selective coating for high temperature concentrating solar power applications

Eva Céspedes; Men Wirz; J. A. Sánchez-García; L. Alvarez-Fraga; R. Escobar-Galindo; C. Prieto

doi:10.1016/j.solmat.2013.12.005

Novel Mo-Si₃N₄ based selective coating for high temperature concentrating solar power applications

Eva Céspedes
, Men Wirz
, J. A. Sánchez-García
, L. Alvarez-Fraga
, R. Escobar-Galindo
, C. Prieto^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

111 Citations (Scopus)

Abstract

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 (ε_{25 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.

Original language	English
Pages (from-to)	217-225
Number of pages	9
Journal	Solar Energy Materials and Solar Cells
Volume	122
DOIs	https://doi.org/10.1016/j.solmat.2013.12.005
Publication status	Published - Mar 2014
Externally published	Yes

Keywords

Parabolic trough concentrator for CSP technology
Selective coating material
Solar absorber cermets

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.solmat.2013.12.005

Cite this

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title = "Novel Mo-Si3N4 based selective coating for high temperature concentrating solar power applications",

abstract = "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.",

keywords = "Parabolic trough concentrator for CSP technology, Selective coating material, Solar absorber cermets",

author = "Eva C{\'e}spedes and Men Wirz and S{\'a}nchez-Garc{\'i}a, \{J. A.\} and L. Alvarez-Fraga and R. Escobar-Galindo and C. Prieto",

year = "2014",

month = mar,

doi = "10.1016/j.solmat.2013.12.005",

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AU - Céspedes, Eva

AU - Wirz, Men

AU - Sánchez-García, J. A.

AU - Alvarez-Fraga, L.

AU - Escobar-Galindo, R.

AU - Prieto, C.

PY - 2014/3

Y1 - 2014/3

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AB - 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.

KW - Parabolic trough concentrator for CSP technology

KW - Selective coating material

KW - Solar absorber cermets

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