TY - GEN
T1 - Control of radiative properties of coatings pigmented with Fe 2O 3 nanoparticles
AU - Gonome, Hiroki
AU - Baneshi, Mehdi
AU - Komiya, Atsuki
AU - Maruyama, Shigenao
PY - 2011/12/1
Y1 - 2011/12/1
N2 - This study describes nanoparticles pigmented coatings used in controlling the radiative properties of surfaces exposed to sunlight. An optimization method that embraces both thermal and aesthetic requirements has been proposed. The proposed coatings maximize the reflectivity of the near infrared (NIR) region to reduce thermal heating, while for aesthetic appeal they minimize the visible (VIS) reflected energy. This spectral behavior can be achieved by controlling the size and concentration of pigment particles and coating thickness. In this study, both experimental and numerical approaches are applied on Fe 2O 3 pigmented coating samples with 0.2 μm and 1 μm of average particle size and different particle concentrations and coating thicknesses. For numerical part the radiation analysis using the Radiation Element Method by Ray Emission Model (REM 2) in a one dimensional parallel plane model is conducted. From the numerical results, it is shown that the optimum size of Fe 2O 3 particles for our desired spectral behavior is about 0.8 μm. The experimental results also show that the samples made from 1 μm particles have better performance for our objective.
AB - This study describes nanoparticles pigmented coatings used in controlling the radiative properties of surfaces exposed to sunlight. An optimization method that embraces both thermal and aesthetic requirements has been proposed. The proposed coatings maximize the reflectivity of the near infrared (NIR) region to reduce thermal heating, while for aesthetic appeal they minimize the visible (VIS) reflected energy. This spectral behavior can be achieved by controlling the size and concentration of pigment particles and coating thickness. In this study, both experimental and numerical approaches are applied on Fe 2O 3 pigmented coating samples with 0.2 μm and 1 μm of average particle size and different particle concentrations and coating thicknesses. For numerical part the radiation analysis using the Radiation Element Method by Ray Emission Model (REM 2) in a one dimensional parallel plane model is conducted. From the numerical results, it is shown that the optimum size of Fe 2O 3 particles for our desired spectral behavior is about 0.8 μm. The experimental results also show that the samples made from 1 μm particles have better performance for our objective.
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M3 - Conference contribution
AN - SCOPUS:84860910982
SN - 9780791838921
T3 - ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011
BT - ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011
T2 - ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011
Y2 - 13 March 2011 through 17 March 2011
ER -