AESTHETIC AND THERMAL PERFORMANCES OF BLACK CUPRIC OXIDE AND TITANIUM DIOXIDE NANO-PARTICULATE COATINGS

被引:0
|
作者
Baneshi, Mehdi [1 ]
Maruyama, Shigenao [2 ]
Komiya, Atsuki [2 ]
机构
[1] Tohoku Univ, Dept Mech Syst & Design, Aoba Ku, 6-6 Aoba, Sendai, Miyagi 9808579, Japan
[2] Tohoku Univ, Inst Fluid Sci, Aoba Ku, Sendai, Miyagi 9808577, Japan
关键词
RADIATIVE HEAT-TRANSFER; PLATE SOLAR COLLECTOR; SPECTRAL OPTICAL-PROPERTIES; THEORETICAL APPROACH; DIFFUSE-REFLECTANCE; COATED FLAKES; ABSORPTION; SCATTERING; ACCOUNT; EMISSION;
D O I
暂无
中图分类号
O414.1 [热力学];
学科分类号
摘要
Nano-particulate coatings with high reflectance against solar irradiation can control undesirable thermal heating by sunlight absorption. It can reduce the energy consumption for air conditioning of houses and cars. For the objects covered by these coatings and subjected to human sight, e.g. roofing surfaces, high dazzle of reflected visible light can offend the human eyes and spoil the fine view of covered objects. A new optimization method in designing pigmented coatings which considers both thermal and aesthetic effects by controlling the material, size and concentration of pigment particles is introduced. Our proposed coatings maximize the reflectance of near infrared (NIR) region to care the thermal effects and minimize the visible (VIS) reflected energy to keep the dark tone because of aesthetic appeal. Black cupric oxide and white titanium dioxide are considered as the pigment particles in this study. The optimum characteristics and performances of theses two pigments are obtained and compared. The results show that cupric oxide has much better performance for our objective.
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页数:11
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