Review of Mid- to High-Temperature Solar Selective Absorber Materials

By C. Kennedy. 2002

574 citations recorded by the source corpus.

This report describes the concentrating solar power (CSP) systems using solar absorbers to convert concentrated sunlight to thermal electric power. It is possible to achieve solar absorber surfaces for efficient photothermal conversion having high solar absorptance (a) for solar radiation and a low thermal emittance (e) at the operational temperature. A low reflectance (?'' 0) at wavelengths (?) 3 mm and a high reflectance (?'' 1) at l 3 mm characterize spectrally selective surfaces. The operational temperature ranges of these materials for solar applications can be categorized as low temperature (T 400 C). High- and mid-temperature applications are needed for CSP applications. For CSP applications, the ideal spectrally selective surface would be low-cost and easy to manufacture, chemically and thermally stable in air at elevated operating temperatures (T= 500 C), and have a solar absorptance= 0.98 and a thermal emittance= 0.05 at 500 C.

Subfields: Civil and Structural Engineering, Electrical and Electronic Engineering, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/c5b2f44ab8d8b89e4029e2595971c4fd47b7ffac

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In Civil and Structural Engineering

1. D. Kraemer
2. K. McEnaney
3. Matteo Chiesa
4. E. Sakr
5. Gang Chen
6. Yubo Sun
7. Peter Bermel
8. Zhiguang Zhou

In Electrical and Electronic Engineering

1. E. Sakr
2. Gang Chen
3. Yubo Sun
4. Peter Bermel
5. Zhiguang Zhou
6. A. McGaughey
7. M. Kaviany

In Renewable Energy, Sustainability and the Environment

1. Gang Chen

Citations in the corpus

• Modeling and optimization of solar thermoelectric generators for terrestrial applications (2012, background): “1(a) consists of a TEG unicouple (i.e. a pair of n- and p-type doped Bi2Te3 elements) sandwiched between a wavelength-selective solar absorber (Kennedy, 2002) and two polished copper electrodes, surrounded by a glass vacuum enclosure.”
• Solar thermophotovoltaics: reshaping the solar spectrum (2016, background): “Previously, a graded concentration of metal particles was proposed to improve solar absorption within the cermet by gradually increasing the refractive index of each cermet layer [30].”
• Developments in the synthesis of flat plate solar selective absorber materials via sol–gel methods: A review (2014, background): “This was associated with a chemical structure change [63] and a decrease in the surface roughness of the coatings by heat [6,64].”