Soiling and Cleaning of Polymer Film Solar Reflectors
Soiling and Cleaning of Polymer Film Solar Reflectors
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聚合物薄膜太阳能反射器的污染和清洁
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
L. Martínez
中科院分区：
文献类型：
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作者：
C. Sansom;A. Fernández;F. Sutter;H. Almond;P. King;L. Martínez
本文描述了市售镀银聚合物薄膜的加速老化，通过在灰尘和沙粒污染的情况下使用刷子和水进行接触清洁。这些条件代表干旱环境中真实的聚光太阳能（CSP）太阳能场中的清洁方案，其中通常需要使用刷子和水的接触清洁来清洁反射表面。虽然适用于玻璃反射器，本文讨论了这些建立的清洁过程的聚合物膜表面的光学和视觉特性的影响，然后描述了一个更良性的，但有效的接触清洁过程的发展，用于清洁聚合物反射器。一系列的清洁刷的影响进行了讨论，有和没有水的存在下，在砂和灰尘颗粒的存在下，从选定的代表性的位置。在西班牙的Plataforma Solar de Almeria（PSA）和英国的克兰菲尔德大学使用不同的实验设备重复实验。结果突出了归因于所使用的实验方法的差异。反射率测量和目视检查表明，在具有线性和旋转运动的清洁头中使用的具有少量水的软清洁刷可以清洁聚合物膜反射表面，而不会造成表面损坏或降低镜面反射率。
This paper describes the accelerated ageing of commercially available silvered polymer film by contact cleaning using brushes and water in the presence of soiling created by dust and sand particles. These conditions represent cleaning regimes in real concentrating solar power (CSP) solar fields in arid environments, where contact cleaning using brushes and water is often required to clean the reflecting surfaces. Whilst suitable for glass reflectors, this paper discusses the effects of these established cleaning processes on the optical and visual characteristics of polymer film surfaces, and then describes the development of a more benign but effective contact cleaning process for cleaning polymer reflectors. The effects of a range of cleaning brushes are discussed, with and without the presence of water, in the presence of sand and dust particles from selected representative locations. The experiments were repeated using different experimental equipment at Plataforma Solar de Almeria (PSA) in Spain and Cranfield University in the UK. The results highlight differences that are attributable to the experimental methods used. Reflectance measurements and visual inspection show that a soft cleaning brush with a small amount of water, used in a cleaning head with both linear and rotational motion, can clean polymer film reflecting surfaces without inflicting surface damage or reducing specular reflectance.