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Accelerated aging tests and characterizations of solar mirrors: Comparison of combinations of stress factors on degradation
Solar Energy Materials and Solar Cells ( IF 6.3 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.solmat.2020.110851
Antoine Grosjean , Estelle Le Baron , Anne-Claire Pescheux , Angela Disdier

Abstract Solar mirrors for concentrated solar power (CSP) plants are expected to ensure a proper efficiency during 30 years. Due to this long time, accelerated aging tests of solar materials are crucial to estimate the real degradation in-service. However, most publications in the CSP field are based on standardized tests which are not sufficient to reach the durability of products in service on all CSP sites and all the market. The impacts on the material properties of unitary stress factors such as temperature, irradiation and humidity have been studied, and models have been proposed for different kinds of materials. All of these models include one or two stress factors, various magnitudes doses, and material dependent parameters. This study aimed to compare degradation under multifactor of stresses: temperature, humidity and irradiation on solar mirrors, with a focus on verification of two following hypotheses: 1 The coupling hypothesis based on the multiplication of the acceleration factors without synergy between themselves, 2. The initialization hypothesis for these three stress factors where the order of application of these tests does not matter. This last hypothesis was never formulated in the models but it is studied in this article. In this paper, we present the results of four different silvered glass mirrors subjected to several accelerated aging tests. The conclusion of this work will help the manufacturer to compare their technology to the others and to ensure the reproducibility of aging between indoor chambers and outdoor sites.

中文翻译:

太阳镜的加速老化测试和表征:应力因素组合对退化的比较

摘要 聚光太阳能 (CSP) 发电厂的太阳能反射镜有望在 30 年内确保适当的效率。由于时间很长,太阳能材料的加速老化测试对于估计实际使用中的退化至关重要。然而,CSP 领域的大多数出版物都基于标准化测试,这些测试不足以达到所有 CSP 站点和所有市场上服务的产品的耐用性。研究了温度、辐照和湿度等单一应力因素对材料性能的影响,并针对不同种类的材料提出了模型。所有这些模型都包括一个或两个应力因素、各种量级的剂量和材料相关参数。本研究旨在比较多因素应力下的降解:温度、太阳镜上的湿度和辐照,重点验证以下两个假设: 1 基于加速因子相乘的耦合假设,它们之间没有协同作用, 2. 这三个应力因子的初始化假设,其中应用顺序这些测试无关紧要。最后一个假设从未在模型中表述过,但在本文中进行了研究。在本文中,我们展示了四种不同的镀银玻璃反射镜经过多次加速老化测试的结果。这项工作的结论将有助于制造商将他们的技术与其他技术进行比较,并确保室内和室外场所之间老化的可重复性。1 基于加速因子相乘的耦合假设,它们之间没有协同作用, 2. 这三个应力因子的初始化假设,其中这些测试的应用顺序无关紧要。最后一个假设从未在模型中表述过,但在本文中进行了研究。在本文中,我们展示了四种不同的镀银玻璃反射镜经过多次加速老化测试的结果。这项工作的结论将有助于制造商将他们的技术与其他技术进行比较,并确保室内和室外场所之间老化的可重复性。1 基于加速因子相乘的耦合假设,它们之间没有协同作用, 2. 这三个应力因子的初始化假设,其中这些测试的应用顺序无关紧要。最后一个假设从未在模型中表述过,但在本文中进行了研究。在本文中,我们展示了四种不同的镀银玻璃反射镜经过多次加速老化测试的结果。这项工作的结论将有助于制造商将他们的技术与其他技术进行比较,并确保室内和室外场所之间老化的可重复性。最后一个假设从未在模型中表述过,但在本文中进行了研究。在本文中,我们展示了四种不同的镀银玻璃反射镜经过多次加速老化测试的结果。这项工作的结论将有助于制造商将他们的技术与其他技术进行比较,并确保室内和室外场所之间老化的可重复性。最后一个假设从未在模型中表述过,但在本文中进行了研究。在本文中,我们展示了四种不同的镀银玻璃反射镜经过多次加速老化测试的结果。这项工作的结论将有助于制造商将他们的技术与其他技术进行比较,并确保室内和室外场所之间老化的可重复性。
更新日期:2021-01-01
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