Measuring Method of the Spectral Absorptivity for Solar Selective Absorption Coatings at High Temperature
ZHANG Yu-feng1, LI Ming1, DAI Jing-min2, SHAO Zhu-feng1, WU Yuan-qing1
1. College of New Energy, Bohai University, Jinzhou 121013, China
2. School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China
Abstract：Solar thermal power generation is one of the effective ways to utilize solar energy. It plays an important role in alleviating energy crisis and environmental pollution and has far-reaching social significance. The selective absorption coating is an important part of solar collecting tube, and the key factor to determine the conversion efficiency of solar energy and heat energy. In order to characterize the optical properties of solar selective absorption coatings under high temperature conditions, a new method for measuring the spectral absorptivity of high temperature metal-ceramic selective absorption coatings was proposed. Based on Fourier spectrometer with double detector and integrating sphere with heating function, a high-vacuum measurement device was developed, which has the function of high temperature oxidation resistance and working temperature simulation. The Mo-SiO2 selective absorption coating with the typical double absorption layer, prepared by magnetron sputtering, was used as the sample for measurement. In addition, the solar spectral absorptivity of sample at different temperature was measured in the spectral range of 0.3～2.5 μm and temperature range from room temperature to 700 ℃. Measurement values at the room temperature were compared to the values calculated from the effective medium theory and matrix formula, and results show a good consistency. Because the maximum deviation is only 2.9%, the feasibility of measurement method is verified. The measurement of high temperature spectral absorptivity has important guiding significance and promoting function for optimization of design parameters and enhancement of absorption performance.
Key words：Solar energy selective absorption coating; High temperature and spectral absorptivity; Integrating sphere; Measurement device
张宇峰，李 明，戴景民，邵珠峰，吴元庆. 太阳能选择性吸收涂层高温光谱吸收率的测量方法[J]. 光谱学与光谱分析, 2018, 38(06): 1814-1818.
ZHANG Yu-feng, LI Ming, DAI Jing-min, SHAO Zhu-feng, WU Yuan-qing. Measuring Method of the Spectral Absorptivity for Solar Selective Absorption Coatings at High Temperature. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(06): 1814-1818.
[1] Jebasiogh V K, Herbert G M J. Renewable and Sustainable Energy Reviews, 2016, 54: 1085.
[2] Leong K Y, Ong H C, Amer N H, et al. Renewable and Sustainable Energy Reviews, 2016, 53: 1092.
[3] Coventry J S. Solar Energy, 2005, 78(2): 211.
[4] Subasri R, Raju K R C S, Reddy D S, et al. Thin Solid Films, 2016, 598: 46.
[5] Wu S, Cheng C H, Hsiao Y J, et al. Renewable and Sustainable Energy Reviews, 2016, 58: 574.
[6] Bellas D V, Lidorikis E. Solar Energy Materials and Solar Cells, 2017, 170: 102.
[7] Dias D, Rebouta L, Costa P, et al. Solar Energy, 2017, 150: 335.
[8] Soum Glaude A, Di Giacomo L, Quoizola S, et al. Nanotechnology for Energy Sustainability, 2017: 231.
[9] Valleti K, Krishna D M, Reddy P M, et al. Solar Energy Materials and Solar Cells, 2016, 145: 447.
[10] Zhang Q C. Solar Energy Materials and Solar Cells, 2000, 62(1): 63.
[11] Soum-Glaude A, Le Gal A, Bichotte M, et al. Solar Energy Materials and Solar Cells, 2017, 170: 254.
[12] Yilmaz S, Riza Ozcalik H, Dincer F. Environmental Progress & Sustainable Energy, 2017, 36(3): 967.
[13] Kalogirou S A, Lloyd S, Ward J, et al. Applied energy, 1994, 47(4): 341.
[14] Pfnder M, Lüpfert E, Pistor P. Solar Energy, 2007, 81(5): 629.
[15] Zhang Q C. Journal of Physics D: Applied Physics, 1998, 31(4): 355.
[16] Zhang Y F, Dai J M, Wang Z W, et al. International Journal of Thermophysics, 2013，34(5): 916.
