摘要
针对光伏组件表面积灰对电站产生明显影响的问题,开展不同颗粒覆层厚度及空隙率条件下二氧化硅颗粒撞击覆层表面特性的实验研究。实验采用高速摄像机测量颗粒的入射速度和反弹速度,重点探讨颗粒覆层厚度和空隙率对黏附概率及平均恢复系数的影响,分析颗粒撞击覆层后的能量损失,并拟合颗粒覆层厚度、空隙率与临界捕集速度的关系式。结果表明,颗粒的黏附概率随入射速度的增大而降低;在相同入射速度下,颗粒覆层越厚,空隙率越大,黏附概率越高,平均恢复系数越小,归一化能量损失也越高。
Based on the issue of significant impact caused by dust accumulation on the surface of photovoltaic modules on power plants,experimental studies on the impact characteristics of silica particles on the coating surface under different particle coating thicknesses and void ratios are carried out.The experiment used a high-speed camera to measure the incident velocity and rebound velocity of particles,focusing on exploring the influence of particle coating thickness and void ratio on adhesion probability and average recovery coefficient,analyzing the energy loss after particles impact the coating,and fitting the relationship between particle coating thickness,void ratio and critical capture velocity.The results show that the adhesion probability of particles decreases with the increase of incident velocity.Under the same incident velocity,the thicker the particle coating and the greater the void ratio,the higher the adhesion probability,the smaller the average recovery coefficient,and the higher the normalized energy loss.
作者
付峥
张威
杜宏檄
王玺
边金林
FU Zheng;ZHANG Wei;DU Hongxi;WANG Xi;BIAN Jinlin
出处
《节能》
2025年第8期72-76,共5页
Energy Conservation
基金
辽宁省教育厅项目面上项目(项目编号:JYTMS20230259)。
关键词
粒子
空隙率
粒子图像测速
平均恢复系数
颗粒覆层
particles
void ratio
particle image velocimetry
average recovery coefficient
particle coating
