Solar Selective Surface on Aluminum
Publish place: 3rd Conference on Energy Conservation in Building
Publish Year: 1382
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
CECB03_176
تاریخ نمایه سازی: 19 آبان 1384
Abstract:
Selective surface is used for the utilization of solar energy by photothermal devices. For this purpose spectrally solar selective surfaces on aluminum substrate were prepared by dc anodization in phosphoric acid solution solution(for enlarging pores) followed by A.C. Voltage coloring treatment in a concentrated metal sulphate solution. The optical performances, which are characterized by a high absorbtivity((α 0.9) in the visible and near infrared regions of the spectrum (0.38-2 microns) and a low emissivity (ε 0.2) for radiation of longer wavelength (greater than 6. microns) of these surfaces were studied. PIXE, RBS and Atomic Absorption Analysis were also done and measured. Effect of deposition conditions like anodizing voltage, coloring voltage, bath temperature, coloring time and concentration of Nickel sulphate on spectral selectivity is discussed.
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Authors
M. Daryabegy
Center for Renewable Energy Research and Application –Atomic Energy Organization of Iran
M.Khaladji
Center for Renewable Energy Research and Application –Atomic Energy Organization of Iran
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