Abstract In this study, the particle resuspension theory was used to estimate the wind cleaning process of the dust particles deposited on flat solar photovoltaic (PV) module surfaces. The model includes the effects of adhesion force, as well as, the hydrodynamic force and torque for rolling detachment model in the analysis. The required shear velocity and actual wind velocity for resuspension of particles with diameter ranging from 0.1 to 100 µm were evaluated, varied from 0.23 to 57.56 m/s and 0.82 to 2219.8 m/s, respectively. The effect of particle size and composition on the required removal velocity was also analyzed. Verified with the experimental deposited dust size distribution, large particles with diameter larger than 1 µm were effectively removed by wind. However, wind cleaning process for small particles was found not to be effective due to the large required shear velocity for detachment. In addition to particle sizes, the influence of compositions on the wind cleaning process can be negligible.

中文翻译：

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分析太阳能光伏 (PV) 组件在平面上积聚的灰尘的风清洁过程

摘要 在这项研究中，粒子再悬浮理论被用来估计沉积在太阳能光伏（PV）组件平面上的灰尘粒子的风清洁过程。该模型包括粘附力的影响，以及分析中滚动脱离模型的流体动力和扭矩。对直径范围为 0.1 至 100 µm 的颗粒再悬浮所需的剪切速度和实际风速进行了评估，分别为 0.23 至 57.56 m/s 和 0.82 至 2219.8 m/s。还分析了粒度和成分对所需去除速度的影响。经实验沉积粉尘粒度分布验证，直径大于 1 µm 的大颗粒被风有效去除。然而，由于分离所需的剪切速度很大，因此发现用于小颗粒的风清洁过程无效。除了粒径，成分对风清洁过程的影响可以忽略不计。