积尘形态及密度对太阳能PV/T系统的性能影响研究  

EFFECT OF DUST MORPHOLOGY AND DENSITY ON PERFORMANCE OF SOLAR PV/T SYSTEM

作　　者：张东[1,2] 俞凯 景金龙 刘畅 安周建 李秉阳 Zhang Dong;Yu Kai;Jing Jinlong;Liu Chang;An Zhoujian;Li Bingyang(School of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Key Laboratory of Complementary Energy System of Biomass and Solar Energy of Gansu Province,Lanzhou 730050,China;School of Mechanical and Electronical Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学能源与动力工程学院,兰州730050 [2]甘肃省生物质能与太阳能互补供能系统重点实验室,兰州730050 [3]兰州理工大学机电工程学院,兰州730050

出　　处：《太阳能学报》2023年第5期171-177,共7页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51806093);甘肃省教育厅青年博士基金(2021QB-046);甘肃省教育厅产业支撑计划(2021CYZC-27);甘肃省重点研发计划(22YF7GA162)。

摘　　要：在室外搭建太阳能光伏/热(PV/T)系统实验测试平台,研究积尘形态及密度对系统性能的影响。研究结果表明:积尘形态主要影响太阳能PV/T系统的光热效率,积尘密度主要影响系统的光电效率。与松散积尘相比,粘结积尘对系统光热效率及综合效率的影响更大。当松散积尘密度从0变化至33.79 g/m^(2)时,系统的光热效率下降率仅为2.32%,而系统的光电效率下降率高达48.65%。在该文实验中,随着积尘密度的增大,太阳电池的工作温度依次为53.99、52.92、50.73和55.58℃,呈先降后增的变化趋势。故少量积尘不会使太阳能PV/T系统中太阳电池的工作温度升高而影响其正常工作。In order to analyze the influence of the dust morphology and density on system performance,the experimental test platform of solar photovoltaic/thermal(PV/T)system is built outdoors.The results show that the photothermal conversion efficiency of solar PV/T system is mainly affected by the morphology of dust,while the photoelectric conversion efficiency is mainly affected by the density of dust.Compared with loose dust,the bonding dust has a greater impact on the photothermal conversion efficiency and comprehensive efficiency.When the density of loose dust changes from 0 to 33.79 g/m2,the decline rate of photothermal efficiency is only 2.32%and the decline rate of photoelectric efficiency is 48.65%.In this experiment,the working temperature of photovoltaic cells are 53.99,52.92,50.73 and 55.58℃,respectively with the increase of the dust density,the trend of the working temperature of photovoltaic cells tends to decrease first and then increase.Therefore,a small amount of dust will not rise the working temperature of the photovoltaic cell and will not affect the normal operation of the solar PV/T system.

关 键 词：太阳能集热器 光伏组件 集热效率 PV/T 灰尘问题 积尘形态 积尘密度 

分 类 号：TK519[动力工程及工程热物理—热能工程]