Wang Juan, Hu Weiwei, Wen Yunyun, Zhang Fei, Li Xingcai
School of Physics, Ningxia University, Yinchuan, 750021, China.
Xinhua College of Ningxia University, Yinchuan, 750021, China.
Sci Rep. 2025 Jan 10;15(1):1582. doi: 10.1038/s41598-024-84708-2.
Optimizing the installation parameters of photovoltaic panels in a photovoltaic array to reduce dust accumulation, thereby enhancing their power generation, is a crucial research topic in the construction of solar power stations in desert regions. Utilizing a series of wind tunnel experiments on a photovoltaic array comprising four equally sized panels, this study assessed how variations in tilt angle, mounting height, spacing, and incoming flow direction influence both the accumulation mass of dust and the particle size distribution in a photovoltaic array. The results indicate that the dust accumulation on the first panel exponential growth with increasing tilt angle, incoming flow angles, and height, while subsequent panels displayed a trend of initial increase followed by a decrease, with a maximum increasing ratio achieved at specific installation configurations, the difference of dust mass on each panel can even be several times. Notably, when the spacing between panels exceeds twice the panel height, the mutual influence on dust deposition becomes negligible, providing a quantifiable threshold for optimal panel spacing. Additionally, significant differences exist in the particle size characteristics of dust in the panel of the array, influenced by the installation parameters of panels and the direction of the incoming flow. This research not only enhances the understanding of dust accumulation in solar energy systems but also offers practical recommendations for optimizing installation strategies, thereby improving the economic viability of solar power stations, particularly in desert regions.
优化光伏阵列中光伏板的安装参数以减少灰尘堆积，从而提高其发电量，是沙漠地区太阳能电站建设中的一个关键研究课题。本研究通过对由四块尺寸相同的面板组成的光伏阵列进行一系列风洞实验，评估了倾斜角度、安装高度、间距和来流方向的变化如何影响光伏阵列中的灰尘堆积质量和颗粒尺寸分布。结果表明，第一块面板上的灰尘堆积量随倾斜角度、来流角度和高度的增加呈指数增长，而后续面板则呈现出先增加后减少的趋势，在特定安装配置下达到最大增加率，各面板上的灰尘质量差异甚至可达数倍。值得注意的是，当面板间距超过面板高度的两倍时，对灰尘沉积的相互影响可忽略不计，这为最佳面板间距提供了一个可量化的阈值。此外，受面板安装参数和来流方向的影响，阵列面板中灰尘的颗粒尺寸特征存在显著差异。本研究不仅增进了对太阳能系统中灰尘堆积的理解，还为优化安装策略提供了实用建议，从而提高了太阳能电站的经济可行性，特别是在沙漠地区。
