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Tuesday, May 5, 2020 | History

2 edition of Selective absorber coatings for photothermal conversion. found in the catalog.

Selective absorber coatings for photothermal conversion.

Joseph Parkes

Selective absorber coatings for photothermal conversion.

by Joseph Parkes

  • 339 Want to read
  • 3 Currently reading

Published .
Written in English


Edition Notes

Thesis (M. Sc.)--The Queen"s University of Belfast, 1987.

The Physical Object
Pagination1 v
ID Numbers
Open LibraryOL19800497M

6]. A spectrally selective surface is, generally, used to improve the photothermal conversion solar energy in the visible range while % of the IR energy is reflected back from the absorbing surface indicating that no heat is lost through thermal radiation. A good solar selective surface can be designed by an absorber-reflector assembly. The most common solar thermal systems are based on parabolic trough collectors, which are operating at °C. Thus, the absorber coating should be robust and efficient to operate at such temperatures without any degradation. There are limited such solar selective coatings and very few Author: Rajesh Kumar, Ambesh Dixit.

the other hand, in the case of the solar absorber coating, i.e., the photothermal absorber coating, the application of surface roughness has been rare7,8) and the application of the grating structure of refractive index9–14) or the double cermet structure15–18) has been more common. We recently developed, however, a solar absorber coatingCited by: 7. H. D. Banerjee, R. Viswanathan, D. R. Rao, and H. N. Acharya "Simple Method Of Fabricating Copper Oxide Selective Absorber Films For Photothermal Conversion Of Solar Energy," Optical Engineering 27(11), (1 November ).Cited by: 1.

  Using the selective light absorber, they were able to achieve a CO 2 conversion efficiency of 80% and a CH 4 production rate of L m-2 h-1 under ambient sunlight irradiation. @article{osti_, title = {Simple method of fabricating copper oxide selective absorber films for photothermal conversion of solar energy}, author = {Banerjee, H D and Viswanathan, R and Rao, D R and Acharya, H N}, abstractNote = {Highly stable selective absorptive coatings of copper oxides were deposited on commercially available galvanized iron substrates by a dip-and-dry technique. The .


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Selective absorber coatings for photothermal conversion by Joseph Parkes Download PDF EPUB FB2

Such coatings offer an important and cost effective way to increase the efficiency of photothermal collectors by providing a high solar absorptance (α) in the visible and near i.r. part ( μ m) of the spectrum and a low emittance (ɛ) to prevent radiation loss in the infrared (beyond μ m) in which region a heated black surface is Cited by: 1.

Selective absorbing coatings The absorber-reflector tandem: absorbing cermet film on a reflecting metallic substrate, is well known as a good selective system for the photothermal conversion of solar energy'.Cited by: This chapter introduced spectrally selective absorber surfaces for efficient photothermal conversion of solar energy.

The key feature is a high solar absorptance combined with a low thermal emittance. Under the condition of high conversion efficiency and the stability of high-temperature, currently some novel double cermet solar selective coatings can be the potential candidates for solar thermal conversion at °: Ke Xu, Miao Du, Lei Hao, Jing Mi, Qinghe Yu, Shijie Li.

The paper examines photothermal conversion which directly converts solar into thermal energy. The principle is illustrated by depicting the energy flow in a conversion unit, and showing that the ideal converter should have an absorption profile that resembles a Fermi function.

The spectral selectivity requirement depends on the flux concentration and the converter surface operating temperature Cited by: 1.

Spectrally selective absorber coating from transition metal complex for efficient photothermal conversion. For economical and efficient utilization of solar energy various types of absorber coatings and preparations can be used for solar collectors.

In this study several varieties of commerical and research selective absorbers are reviewed and tabulated for application.

For many of these coatings, detailed reflectance, emittance and thermal stability data are presented. Spectrally selective absorber coating from transition metal complex for efficient photothermal conversion Article (PDF Available) in Journal of Materials Science 48(23).

Several types of coatings and surface preparations, other than selective absorbers, can be utilized for economical collection and control of solar energy.

These films can be used for both solar thermal collectors and for window systems in buildings. Numerous nonselective, hot and cold mirror, and antireflective coatings are reviewed and by:   Copper–manganese oxide (CuMnO x) thin films are proposed as efficient and thermally stable selective solar absorbers.

The coatings were deposited on aluminum, stainless steel, and glass substrates by dip-coating method from the alcoholic solution of the Cu and Mn nitrate. An organic filmogen was introduced in order to get better adherence with the substrate hence to get uniform films Cited by: The preparation, properties and role of transparent conducting coatings as solar selective surfaces are considered, with attention given to metal films, wide bandgap semiconductors, and geometrical selective spectral surfaces, and aspects of the application of selective surfaces to photothermal conversion Cited by:   The SGM absorbers exhibit superior solar selective and omnidirectional absorption, flexible tunability of wavelength selective absorption, excellent photothermal performance Author: Keng-Te Lin, Han Lin, Tieshan Yang, Baohua Jia, Baohua Jia.

Selective blacks for enhanced photothermal solar energy conversion Energy Conversion and Management, Vol. 21, No. 4 Efficiency of ceramic absorber coatings for solar-thermal conversionCited by: The main aim of this study is to prepare a solar selective absorber coating with high photothermal conversion efficiency, thermal stability and corrosion resistance using a cost-effective method.

In order to make this, different spinel based solar selective absorber coatings have been prepared with good selectivity using wet-chemical method as discussed elsewhere (Atchuta et al., a, Atchuta et al., Author: S.R. Atchuta, S. Sakthivel, Harish C. Barshilia. Solar selective coatings are used on photothermal absorbers of solar systems.

They enhance the efficiency of photothermal conversion, especially at elevated temperatures, by the reduction of. For efficient photothermal conversion in solar selective coatings, high absorptance (α) in the visible region (VIS) and low thermal emittance (ε) in the infrared (IR) region at high operating.

Absorber coatings should exhibit high solar absorptance (α) and low thermal emissivity (ε) to utilise solar radiation effectively. To achieve these desirable properties, a coating should absorb the short UV–VIS–NIR wavelengths (– µm) while reflecting the longer infrared wavelengths (–25 µm) [ Author: Kavan Sheth, Kavan Sheth, P.

Kondaiah, K. Niranjan, K. Niranjan, Sandip Bysakh, G. Srinivas, Harish. Keywords High-temperature solar selective coating cermet solar absorber and also calculated a photothermal. solar energy is the solar thermal conversion method using solar absorbers. The. Materials for photothermal solar energy conversion techniques mostly include some coating or surface conversion process.

Examples include electro- selective absorber coating configuration. In this work, a selective light absorber was used to construct a photothermal system to generate a high temperature (up to °C) under weak solar Cited by:. Metal–dielectric (cermet) solar selective absorber coatings (SSACs), in which metal NPs are embedded in dielectric matrices, have been widely used in the photothermal conversion field due to their strong broadband absorption characteristics.

However, metal nanoparticles (NP) always possess some inherent acti Journal of Materials Chemistry A HOT PapersCited by: 6.

Highly stable selective absorptive coatings of copper oxides were deposited on commercially available galvanized iron substrates by a dip-and-dry technique. The optothermal, structural, and optical properties of these films were investigated.

The deposition parameters for an optimum selective absorptive film were determined. A typical such coating gave solar absorptance Cited by: 1.Nickel doped cobaltite spinel as a solar selective absorber coating for efficient photothermal conversion with a low thermal radiative loss at high operating temperatures.

Nickel doped cobaltite spinel as a solar selective absorber coating for efficient photothermal conversion with a low thermal radiative loss at high operating temperatures, S.