摘要
以YL250P-29b光伏组件为研究对象,利用COMSOL软件对其在低风速环境下的积灰特性进行了数值模拟;模拟与实验的对比结果表明,两者数量级相同且变化趋势一致,验证了数值模拟方法的合理性。分析了风速、粒径、安装倾角对光伏组件表面积灰特性的影响,结果表明,低风速环境中,同一安装倾角下对于20和25μm颗粒,积灰密度随风速增加而增加;风速不变且安装倾角大于30°后,积灰密度随安装倾角增加而降低;当风速和安装倾角相同时,20μm粒径的积灰密度大于其它粒径的;安装倾角为30°时,颗粒各粒径下的积灰密度均达到峰值,此后随安装倾角增加而下降;一定条件下,可结合灰尘粒度分析结果考虑适当增加安装倾角以减小颗粒沉积。
Taking YL250P-29b photovoltaic module of our university as the research object,the ash deposition characteristics of YL250P-29b photovoltaic module in low wind speed environment were simulated by COMSOL software.The comparison results between simulation and experiment show that the order of magnitude of the two is the same and the change trend is consistent,which verifies the rationality of the numerical simulation method.Based on this,the influence of wind speed,particle size and installation angle on the gray characteristics of PV module surface area was analyzed.The results show that,in the low wind speed environment,for 20 and 25μm particles,the ash density increases with the increase of wind speed;when the wind speed is constant and the installation angle is greater than 30°,the ash density decreases with the increase of the installation angle;when the wind speed and installation angle are the same,the ash deposition density of 20μm particle size is greater than that of other particle sizes;when the installation angle is 30°,the ash accumulation density of particles under each particle size is higher.The results show that the ash density reaches the peak value,and then decreases with the increase of the installation angle;under certain conditions,it can be considered to increase the installation angle appropriately in combination with the dust particle size analysis results to reduce the particle deposition.
作者
吕玉坤
杨宇星
赵伟萍
LV Yukun;YANG Yuxing;ZHAO Weiping(College of Energy and Power Machinery Engineering,North China University of Electric Power,Baoding Hebei 071003,China)
出处
《电源技术》
CAS
北大核心
2021年第6期801-804,827,共5页
Chinese Journal of Power Sources
关键词
光伏组件
积灰特性
风速
颗粒粒径
安装倾角
photovoltaic module
ash deposition characteristics
wind speed
particle size
installation angle
