Mesh size of stone used for photovoltaic glass in Guinea-Bissau
So-called Pattern Glass is mostly used as front glass in crystalline modules, whilst float glass is used for both substrate and back glass in thin-film modules.
Solar applications require flat glass. So-called Pattern Glass is mostly used as front glass in crystalline modules, whilst float glass is used for both substrate and back glass in thin-film modules. Molten glass is slowly cooled and fed off from the motlen tin.
For solar applications the main attributes of glass are transmission, mechanical strength and specific weight. Transmission factors measure the ratio of energy of the transmitted to the incoming light for a specific glass and glass width. Ratio of the total energy from an AM1-5 source over whole solar spectrum from 300 - 2,500nm wavelength.
Coating: Thin layers of coating may be deposited on one side of the glass for anti-reflection, improved conductivity or self-cleaning. For solar applications the main attributes of glass are transmission, mechanical strength and specific weight.
Glass is also the basis for mirrors used to concentrate sunlight, although new technologies avoiding glass are emerging. Most commercial glasses are oxide glasses with similar chemical composition. The main component is Silicon Oxide, SiO 2, which is found in sandstone.
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