Airborne sand and dust soiling of solar collecting mirrors
Airborne sand and dust soiling of solar collecting mirrors
复制标题
太阳能集光镜的空气沙尘污染
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
S. Bouaichaoui
中科院分区：
文献类型：
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作者：
C. Sansom;H. Almond;P. King;E. Endaya;S. Bouaichaoui
太阳能收集镜的反射率会因沙尘污染而显著降低，特别是在干旱环境中。空气中较大的沙尘颗粒也会因侵蚀而造成损害，从而再次降低反射率。这项工作描述了调查的空气中的颗粒大小，形状和组成在三个干旱的地方，被认为是适合CSP工厂，即在伊朗，利比亚和阿尔及利亚。沙和灰尘已被收集在0.5至2.0米之间的高度通过各种技术，但被证明是不是在地面灰尘和沙子中发现的颗粒大小的代表，或在太阳能收集镜面本身。提出了可能的原因，最值得注意的是，较大的颗粒可能会从镜面反弹。讨论了反射镜清洁和集热器端面腐蚀的影响。沙尘污染会显著降低太阳能集热镜的反射率，特别是在干旱环境中。更大的空气中的沙尘颗粒也会因侵蚀而造成损害，再次降低反射率。这项工作描述了调查的空气中的颗粒大小，形状和组成在三个干旱的地方，被认为是适合CSP工厂，即在伊朗，利比亚和阿尔及利亚。沙和灰尘已被收集在0.5至2.0米之间的高度通过各种技术，但被证明是不是在地面灰尘和沙子中发现的颗粒大小的代表，或在太阳能收集镜面本身。提出了可能的原因，最值得注意的是，较大的颗粒可能会从镜面反弹。镜面清洗和收集器刻面侵蚀的影响进行了讨论。
The reflectance of solar collecting mirrors can be significantly reduced by sand and dust soiling, particularly in arid environments. Larger airborne sand and dust particles can also cause damage by erosion, again reducing reflectance. This work describes investigations of the airborne particle size, shape, and composition in three arid locations that are considered suitable for CSP plants, namely in Iran, Libya, and Algeria. Sand and dust has been collected at heights between 0.5 to 2.0m by a variety of techniques, but are shown not to be representative of the particle size found either in ground dust and sand, or on the solar collecting mirror facets themselves. The possible reasons for this are proposed, most notably that larger particles may rebound from the mirror surface. The implications for mirror cleaning and collector facet erosion are discussed.The reflectance of solar collecting mirrors can be significantly reduced by sand and dust soiling, particularly in arid environments. Larger airborne sand and dust particles can also cause damage by erosion, again reducing reflectance. This work describes investigations of the airborne particle size, shape, and composition in three arid locations that are considered suitable for CSP plants, namely in Iran, Libya, and Algeria. Sand and dust has been collected at heights between 0.5 to 2.0m by a variety of techniques, but are shown not to be representative of the particle size found either in ground dust and sand, or on the solar collecting mirror facets themselves. The possible reasons for this are proposed, most notably that larger particles may rebound from the mirror surface. The implications for mirror cleaning and collector facet erosion are discussed.