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http://dx.doi.org/10.3795/KSME-B.2013.37.9.799

Study on Efficiency of Flat-Plate Solar Collector Using Nanofluids  

Lee, Seung-Hyun (School of Aerospace and Mechanical Engineering, Korea Aerospace Univ.)
Jang, Seok Pil (School of Aerospace and Mechanical Engineering, Korea Aerospace Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.37, no.9, 2013 , pp. 799-805 More about this Journal
Abstract
An analytical study is conducted to assess the efficiency of a flat-plate solar collector using nanofluids. The nondimensionalized 2D heat diffusion equation is solved by assuming a wavelength-independent extinction coefficient and intensity to obtain the analytical solution of the temperature distribution in the flat-plate solar collector. The dimensionless temperature distribution is investigated as functions of the volume fraction of the nanofluids, magnitude of heat loss, and collector's depth based on the analytical solution when using water-based single-walled carbon nanohorn (SWCNH) nanofluids as a working fluid. Finally, the efficiency of the flat-plate solar collector using the nanofluids is predicted and compared with that of the conventional solar collector. The results indicate that the efficiency of the nanofluid solar collector is better than that of the conventional solar collector under specific geometrical conditions.
Keywords
Nanofluid; Flat-plate Solar Collector; Single Wall Carbon Nanohorn, SWCNH;
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