Antireflection treatment of Thickness Sensitive Spectrally Selective (TSSS) paints for thermal solar absorbers

Lundh, Magdalena; Blom, Thomas; Wäckelgård, Ewa

doi:10.1016/j.solener.2009.10.016

Cited by 26 publications

(5 citation statements)

References 6 publications

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“…The low refractive index of silica renders it suitable as an antireflective coating over the solar spectrum, making it a common top layer for solar selective surfaces [63,64]. Furthermore, silica is opaque in the IR region, and consequently it reflects thermal radiation and thereby lowers the emittance.…”

Section: Silica Top Coatingmentioning

confidence: 99%

Environmentally sustainable electroplating of selective cobalt-chromium coating on stainless steel for efficient solar collectors

Zäll

Nordenström

Järn

et al. 2022

Solar Energy Materials and Solar Cells

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Section: Silica Top Coatingmentioning

confidence: 99%

Environmentally sustainable electroplating of selective cobalt-chromium coating on stainless steel for efficient solar collectors

Zäll

Nordenström

Järn

et al. 2022

Solar Energy Materials and Solar Cells

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“…x spinel ceramic film Spray-coating technique is quick, low-cost, easily adaptable to different coating solutions, and suitable for the establishment of a large-scale process, and there is a minimum of material waste. But as paint coatings are comparatively thicker and the organic binders also absorb in the thermal IR range, these coatings usually suffer from the higher thermal emittance (ε 100 > 0.2) [16]. Hence, the preparation and investigation of the spinel thin films by sol-gel route have attracted considerable attention.…”

Section: Spectral Selectivity Absorber Coating Based On Cumnomentioning

confidence: 99%

Photothermal Conversion Applications of the Transition Metal (Cu, Mn, Co, Cr, and Fe) Oxides with Spinel Structure

Ma¹,

Geng²,

Liu³

2017

Magnetic Spinels - Synthesis, Properties and Applications

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The transition metal (Cu, Mn, Co, Cr, and Fe) oxides with spinel structure can be used as solar absorber materials due to their unique properties. Copper-based spinel ceramic pigments have been successfully prepared by sol-gel combustion method at low temperatures. Subsequently, spinel ceramic pigments have been employed to fabricate selective absorber paint coating by spraying-coating. The paint coating showed good spectral selectivity and thermal stability at low-to-mid temperature region. Spinel ceramic films have also been deposited on metal substrates by one dipping/annealing cycle. Spinel phase for single-layer ceramic film could be achieved at low annealing temperatures, and the single-layer ceramic film showed good spectral selectivity and benign thermal stability. Results presented here show that spinel compounds based on transition metal (Cu, Mn, Co, Cr, and Fe) oxides are promising materials for photothermal conversion applications.

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“…The thermal emittances of coated samples as well as black body furnace were measured at different temperatures such as 100 0 C, 150 0 C, 200 0 C, 250 0 C, and 300 0 C. Finally, the thermal loss (thermal emissivity) value was estimated by taking the ratio of thermal emittance of coated sample and the black body at a given temperature [42]. In the other reported works, thermal loss of a sample is generally calculated using theoretical black body distribution instead of measured blackbody emittance [41,43]. FTIR spectrometer equipped with the standard accessories of black body furnace with a high temperature and high pressure (HTHP) cell (sample compartment) supplied by Bruker optic GmbH was used for the measurement of thermal radiation emittance.…”

Section: Thermal Loss (Thermal Emissivity) Measurement With Respect To the Black Bodymentioning

confidence: 99%

Development of cost efficient solar receiver tube with a novel tandem absorber system

Prasad

Reddy

Sakthivel

2016

Applied Thermal Engineering

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New single layer, double layer and triple layer absorber tandems were designed and developed for high performance Organic Ranking Cycle (ORC) based solar thermal applications. A Cr-Mn-Fe composite oxide based absorber layer is devolved by controlled chemical oxidation and designed to have a nanoporous structure. It is covered with double antireflective layers a ZrO 2 -SiO 2 nanocomposite layer developed by the sol-gel route and a porous SiO 2 layer obtained from SiO 2 nanoparticle suspension. Double and triple layer tandem absorbers were developed by a combination of chemical, sol-gel and nanoparticle suspension methods. By varying process parameters like duration, temperature and withdrawal speed, different combinations of Cr-Mn-Fe oxides/ZrO 2 -SiO 2 double layer tandem and Cr-Mn-Fe oxides/ZrO 2 -SiO 2 /SiO 2 triple layer tandem composite absorber layers with varying refractive indices were developed on an economical variety of SS substrate. The optimized thickness of the absorber layer along with the antireflective layers shown a high absorptance (α= 94.9) and low warm emittance (ε = 0.122 at 300°C). More specifically, this novel double layer tandem coating has excellent optical properties along with high corrosion resistance (withstands > 200 h in salt spray test). It has good thermal stability in an open air atmosphere and is well suited for low and medium temperature solar thermal applications.

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Antireflection treatment of Thickness Sensitive Spectrally Selective (TSSS) paints for thermal solar absorbers

Cited by 26 publications

References 6 publications

Environmentally sustainable electroplating of selective cobalt-chromium coating on stainless steel for efficient solar collectors

Environmentally sustainable electroplating of selective cobalt-chromium coating on stainless steel for efficient solar collectors

Photothermal Conversion Applications of the Transition Metal (Cu, Mn, Co, Cr, and Fe) Oxides with Spinel Structure

Development of cost efficient solar receiver tube with a novel tandem absorber system

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