Optimization of AlxOy/Pt/AlxOy multilayer spectrally selective coatings for solar–thermal applications

Vacuum ◽  
2012 ◽  
Vol 86 (12) ◽  
pp. 2129-2135 ◽  
Author(s):  
Z.Y. Nuru ◽  
C.J. Arendse ◽  
S. Khamlich ◽  
M. Maaza
Keyword(s):  
Solar Thermal ◽  
Spectrally Selective ◽  
Solar Thermal Applications

Spectrally selective CrMoN/CrON tandem absorber for mid-temperature solar thermal applications

2013 ◽  
Vol 109 ◽  
pp. 97-103 ◽  
Author(s):  
N. Selvakumar ◽  
S. Santhoshkumar ◽  
S. Basu ◽  
A. Biswas ◽  
Harish C. Barshilia
Keyword(s):  
Solar Thermal ◽  
Spectrally Selective ◽  
Solar Thermal Applications

scholarly journals Spectrally Selective Solar Absorbers based on Ta:SiO 2 Cermets for Next‐Generation Concentrated Solar–Thermal Applications

2020 ◽  
Vol 8 (7) ◽  
pp. 2000125 ◽  
Author(s):  
Maryna Bilokur ◽  
Angus Gentle ◽  
Matthew D. Arnold ◽  
Michael B. Cortie ◽  
Geoffrey B. Smith
Keyword(s):  
Solar Thermal ◽  
Next Generation ◽  
Solar Absorbers ◽  
Spectrally Selective ◽  
Solar Thermal Applications

Spectrally selective Cu1.5Mn1.5O4 spinel ceramic pigments for solar thermal applications

RSC Advances ◽  
2016 ◽  
Vol 6 (39) ◽  
pp. 32947-32955 ◽  
Author(s):  
Pengjun Ma ◽  
Qingfen Geng ◽  
Xianghu Gao ◽  
Shengrong Yang ◽  
Gang Liu
Keyword(s):  
Sol Gel ◽  
Cost Effective ◽  
Combustion Method ◽  
Solar Thermal ◽  
Ceramic Pigments ◽  
Spectrally Selective ◽  
Solar Thermal Applications ◽  
Spinel Ceramic

In this work, Cu1.5Mn1.5O4 spinel ceramic pigments have been successfully prepared by a facile and cost-effective sol–gel self-combustion method and annealed at a temperature ranging from 500 °C to 900 °C for 1 h.

scholarly journals Spectrally selective absorber coating of WAlN/WAlON/Al2O3 for solar thermal applications

2016 ◽  
Vol 157 ◽  
pp. 716-726 ◽  
Author(s):  
Atasi Dan ◽  
J. Jyothi ◽  
Kamanio Chattopadhyay ◽  
Harish C. Barshilia ◽  
Bikramjit Basu
Keyword(s):  
Solar Thermal ◽  
Spectrally Selective ◽  
Solar Thermal Applications

Optimization of Pigmented Coatings for Concentrating Solar Thermal Applications

2011 ◽  
Author(s):  
Refet A. Yalcin ◽  
Hakan Ertu¨rk
Keyword(s):  
Simplex Algorithm ◽  
Nano Particles ◽  
Solar Thermal ◽  
Solar Thermal Energy ◽  
Spectrally Selective ◽  
Design Variables ◽  
Scattering Effects ◽  
Spectral Emittance ◽  
Solar Thermal Applications ◽  
Pigmented Coatings

Spectrally selective coatings are used in absorbers of solar collectors to maximize efficiency of solar thermal energy systems. Desired coating should have high absorptance at solar wavelengths and low emittance at the wavelengths where absorber emits heat. This study focuses on pigmented coatings that consist of a binder and uniformly distributed nano-particles known as pigments that exhibit the desired spectrally selective behavior. Radiative behavior of coatings depend on coating thickness, pigment size, concentration, and the optical properties of binder and pigment materials. In order to understand the effect of these parameters, a radiative model of the pigmented coatings is developed using Lorentz-Mie theory in conjunction with Hartel theory to incorporate the multiple scattering effects. Through the solution of the radiative transfer equation by the four flux method, spectral emittance is predicted. Design of such a coating is formulated as an inverse problem of estimating design variables yielding the desired spectral emittance of the ideal coating. The nonlinear problem is solved by optimization applying two algorithms for the solution. While both algorithms are capable of providing the same solution, the convergence of Quasi Newton method is found to be superior to that of Nelder Mead simplex algorithm.

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