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Chromaticity and Optical Properties of Colored and Black Solar-Thermal Absorbing Coatings
Department of Chemical and Materials Engineering, Hefei University, China. (Materials Science)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
2010 (English)In: Solar Energy Materials and Solar Cells, ISSN 0927-0248, Vol. 94, no 10, 1630-1635 p.Article in journal (Refereed) Published
Abstract [en]

Two important trends in solar thermal utilization in buildings are building integration and color appearance. Coatings based on titanium alloy nitride show variety of different colors. These can be controlled by film thickness for a single layer stack, or by putting another layer on top of the first layer. Strong absorption around 500 nm is important to cause color appearance. Chromaticity and optical properties of colored coatings were studied and compared to black coatings. In the three-point gamut system, such colors show an additive mixture property. Solar absorptance of 0.80 to 0.95 can be obtained with thermal emittance of 0.04 to 0.09 (100oC). These coatings provide a choice for solar thermal integration in buildings where appearance is an important feature.

Place, publisher, year, edition, pages
Amsterdam: Elsevier, 2010. Vol. 94, no 10, 1630-1635 p.
Keyword [en]
Colored solar collectors; chromaticity; titanium alloy nitride; green buildings.
National Category
Engineering and Technology
Research subject
Engineering Science with specialization in Solid State Physics
URN: urn:nbn:se:uu:diva-164132DOI: 10.1016/j.solmat.2010.05.019ISI: 000281074800012OAI: diva2:466609
Available from: 2011-12-19 Created: 2011-12-16 Last updated: 2011-12-19Bibliographically approved

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