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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/5310

Title: Selective solar absorber coating research at the CSIR (South Africa)
Authors: Roro, KT
Tile, N
Yalisi, B
De Gama, M
Wittes, T
Roberts, T
Forbes, A
Keywords: Sol-gel
Carbon-nickel oxide
Selective solar absorbers
Solar absorber coating
Renewable energy
WREC 2011
Issue Date: May-2011
Citation: Roro, KT, Tile, N, Yalisi, B et al. 2011. Selective solar absorber coating research at the CSIR (South Africa). World Renewable Energy Congress 2011 (WREC 2011), Linköping, Sweden, 8-11 May 2011
Series/Report no.: Workflow request;7041
Abstract: A sol-gel technique has been established at a laboratory scale for low cost production of high efficient selective solar absorbers comprising a composite material of nano-structured carbon in a nickel oxide matrix. In order for these materials to be applied in real world scenarios it is necessary to extensively scale up the fabrication process to allow large area coatings. This can be done by adapting this sol-gel technique to large area deposition. In this project, we are undertaking research and development activities for three-years to make a 'Lab to Large scale' transition in order to eventually integrate into existing solar collectors for low cost domestic water heating in a rural area for social good. A spray coating technique has been used to deposit these C/NiO coatings on aluminum substrates. Preliminary optical results have shown absorptance of up to 90 %. The preparation and characterization as well as the process towards developing a large-area solar selective coating for low cost domestic heating will be discussed.
Description: World Renewable Energy Congress 2011 (WREC 2011), Linköping, Sweden, 8-11 May 2011
URI: http://hdl.handle.net/10204/5310
Appears in Collections:Nanotechnology
General science, engineering & technology

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