对9种浅色涂料的紫外可见光近红外波段反射光谱以及表面温度进行测试,探究颜色对太阳辐射吸收特性的影响机理,明确涂料表面温度与太阳辐射吸收特性的关联。结果表明,9种涂料太阳辐射吸收系数的最高值和最低值相差0.1539;色相对可见光波段的反射光谱曲线波形以及近红外波段的反射比大小影响显著,色相值越大,反射光谱曲线波谷位置向低波长偏移,即对短波段辐射能具有更强的吸收效果;饱和度影响可见光波段光谱曲线波动幅度,高饱和度涂料对波峰处辐射能具有更强的反射能力,对波谷处辐射能具有更强的吸收能力。此外,太阳辐射吸收系数越大,涂料表面温度越高,且可见光波段光谱波长特征亦影响涂料的太阳辐射吸收效果,当涂料的低反射率波带更宽、高反射率波段太阳辐射密度更低时,涂料表面温度更高。
Abstract
The reflection spectra in the ultraviolet, visible and near-infrared bands and the surface temperatures of nine light-colored coatings were tested to explore the influence mechanism of color on the absorption characteristics of solar radiation and clarify the correlation between the absorption characteristics and surface temperature of the coatings. The results show that the difference between the maximum and minimum values of the solar absorption coefficients of the nine coatings is 0.1539. Hue has a significant impact on the waveform of the reflection spectrum curve in the visible band and the reflectance in the near-infrared band. The larger the hue value, the trough of the reflection spectrum curve shifts towards the low wavelength, indicating a stronger absorption on short-waveband radiant energy. Saturation affects the fluctuation amplitude of the spectral curve in the visible band. Coatings with high saturation have a stronger reflection property for radiant energy at the peak and a stronger absorption property for radiant energy at the trough. In addition, the larger the solar radiation absorption coefficient, the higher the surface temperature of the coating. Also, the spectral wavelength characteristics in the visible light band affect the solar radiation absorption of the coating. When the low-reflectivity band of the coating is wider and the solar radiation density in the high-reflectivity band is lower, the surface temperature of the coating is higher.
关键词
太阳辐射 /
吸收光谱 /
表面温度 /
浅色装饰涂料 /
太阳辐射吸收系数
Key words
solar radiation /
absorption spectrum /
surface temperature /
light-colored coating /
solar absorption coefficient
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] SONG Z N, ZHANG W D, SHI Y X, et al.Optical properties across the solar spectrum and indoor thermal performance of cool white coatings for building energy efficiency[J]. Energy and buildings, 2013, 63: 49-58.
[2] ZHANG Y G, YANG Z, ZHANG Z H, et al.Sub-ambient cooling effect and net energy efficiency of a super-amphiphobic self-cleaning passive sub-ambient daytime radiative cooling coating applied to various buildings[J]. Energy and buildings, 2023, 284: 112702.
[3] YU S X, ZHANG Q, WANG Y F, et al.Photonic-structure colored radiative coolers for daytime subambient cooling[J]. Nano letters, 2022, 22(12): 4925-4932.
[4] 桑国臣, 程芳玥, 刘瑶, 等. 围护结构太阳辐射吸收系数对太阳能采暖建筑外墙热性能的影响[J]. 太阳能学报, 2023, 44(12): 33-40.
SANG G C, CHENG F Y, LIU Y, et al.Influence of solar absorptivity of building envelope on thermal performance of exterior wall of solar heating building[J]. Acta energiae solaris sinica, 2023, 44(12): 33-40.
[5] 张红婴, 钟珂, 刘加平. 太阳辐射吸收系数对围护结构夏季净得热量的影响[J]. 太阳能学报, 2017, 38(1): 156-163.
ZHANG H Y, ZHONG K, LIU J P.The effect of solar absorption coeficient on net heat gain of building envelopes in summer[J]. Acta energiae solaris sinica, 2017, 38(1): 156-163.
[6] 张红婴, 钟珂, 刘加平. 太阳辐射吸收系数对建筑物全年空调能耗的影响[J]. 东华大学学报(自然科学版), 2017, 43(2): 266-273.
ZHANG H Y, ZHONG K, LIU J P.Effect of solar absorption coefficient on annual energy consumption of air-conditioning in building[J]. Journal of Donghua University (natural science), 2017, 43(2): 266-273.
[7] LIU H B, CHEN Z H, CHEN B B, et al.Studies on the temperature distribution of steel plates with different paints under solar radiation[J]. Applied thermal engineering, 2014, 71(1): 342-354.
[8] POKORSKA-SILVA I, KADELA M, MAŁEK M, et al. An assessment of the thermal behavior of envelope surface coatings with different colors[J]. Polymers, 2021, 13(1): 82.
[9] 罗剑峰, 陈健美, 谢克光, 等. 水泥和沥青建筑材料对太阳能量吸收特性[J]. 太阳能, 2016(6): 50-55.
LUO J F, CHEN J M, XIE K G, et al.Solar energy absorption characteristics of cement and asphalt building materials[J]. Solar energy, 2016(6): 50-55.
[10] 陈志华, 陈滨滨, 刘红波. 钢结构常用涂料太阳辐射吸收系数试验研究[J]. 建筑结构学报, 2014, 35(5): 81-87.
CHEN Z H, CHEN B B, LIU H B.Experimental research on solar radiation absorptance of commonly used coatings for steel structures[J]. Journal of building structures, 2014, 35(5): 81-87.
[11] 王文新, 梁雨, 李金娟, 等. 内蒙地区农宅围护结构太阳辐射吸收系数研究[J]. 西安建筑科技大学学报(自然科学版), 2020, 52(5): 730-739.
WANG W X, LIANG Y, LI J J, et al.Study on solar absorption coefficient of building envelope in Inner Mongolia[J]. Journal of Xi’an University of Architecture & Technology(natural science edition), 2020, 52(5): 730-739.
[12] HONG C, YANG Y J, GE S W, et al.Is the design guidance of color and material for urban buildings a good choice in terms of thermal performance?[J]. Sustainable cities and society, 2022, 83: 103927.
[13] GB 50176—2016, 民用建筑热工设计规范[S].
GB 50176—2016, Code for thermal design of civil building[S].
[14] MUDACHATHI R, TANAKA T.Up scalable full colour plasmonic pixels with controllable hue, brightness and saturation[J]. Scientific reports, 2017, 7: 1199.
[15] DAI M X, DU Y F, JIN J, et al.Design and experimental evaluation of reflective grouting asphalt concrete for durable cooling asphalt pavement[J]. Energy and buildings, 2023, 294: 113262.
[16] LIU S H, LIU Z J, WANG J, et al.Effect of the material color on optical properties of thermochromic coatings employed in buildings[J]. Case studies in thermal engineering, 2023, 45: 102916.
基金
国家自然科学基金（52008337）; 陕西省重点研发计划（2024SF-YBXM-629）; 陕西省自然科学基础研究计划（2024JC-YBQN-0496）
PDF(1841 KB)
