Study on Photothermal Stability and Photothermal Conversion Characteristics of Carbon Nanotube Nanofluids
Carbon nanotube nanofluids used as recycling fluids for direct absorption solar collector were prepared by a “two-step method.” Their photothermal stability was obtained by measuring the transmittance of nanofluids with different dispersant concentrations before and after exposure to sunlight. The spectral absorption and photothermal conversion characteristics of nanofluids and base fluids were compared through insolation experiment. The results show that the nanofluids have good photothermal stability as proved by insolation experiment; furthermore, nanofluids are of higher heating rate and insolation temperature than those of base fluids; moreover, they also show better photothermal conversion characteristics.
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Document Type: Research Article
Publication date: 2011-11-01
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