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Accelerated aging test modeling applied to solar mirrors
npj Materials Degradation ( IF 6.6 ) Pub Date : 2019-07-12 , DOI: 10.1038/s41529-019-0089-y
Coralie Avenel , Olivier Raccurt , Jean-Luc Gardette , Sandrine Therias

The durability of solar mirrors is a critical factor for the deployment of concentrating solar power plants. Accelerated aging test models currently applied in the polymer, electronic, and photovoltaic fields have recently been reviewed, and the issues of their application to solar mirrors have been discussed. This article first reports the results of temperature, humidity, and light irradiance accelerated aging tests performed to assess the dependent parameters of selected models from the literature. These parameters include the apparent activation energy for the Arrhenius temperature law, the Peck and Eyring coefficients for humidity models and the Schwarzschild coefficient for the irradiance law. The experimental values were then assessed for specular reflectance loss of solar mirrors. Finally, using these parameters, acceleration factors were calculated for solar mirrors. An effective temperature considering the Arrhenius degradation law was used rather than the commonly used mean temperature. This question is also addressed for light irradiance by using the dose instead of the mean value.



中文翻译:

加速老化测试建模应用于太阳镜

太阳能镜的耐用性是部署集中式太阳能发电厂的关键因素。最近已对当前在聚合物,电子和光伏领域中应用的加速老化测试模型进行了回顾,并讨论了其在太阳镜中的应用问题。本文首先报告进行温度,湿度和光辐照加速老化测试的结果,以评估文献中所选模型的相关参数。这些参数包括Arrhenius温度定律的表观活化能,湿度模型的Peck和Eyring系数以及辐照度定律的Schwarzschild系数。然后评估实验值的太阳镜的镜面反射率损失。最后,使用这些参数,计算了太阳镜的加速因子。使用考虑了阿累尼乌斯降解定律的有效温度,而不是通常使用的平均温度。通过使用剂量而不是平均值也可以解决此问题。

更新日期:2019-07-12
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