Analysis of the Light Concentration Loss of a Fresnel CPV/T System after Dust Accumulation  

作　　者：ZHAO Ning YAN Suying MA Xiaodong WU Ze MING Tingzhen ZHAO Xiaoyan ZHANG Na 

机构地区：[1]College of Energy and Power Engineering,Inner Mongolia University of Technology,Hohhot O10051,China [2]School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China [3]Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Journal of Thermal Science》2022年第6期1868-1880,共13页热科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.51766012);the Natural Science Foundation of Inner Mongolia(No.2019MS05025);the Inner Mongolia Science and Technology Major Project(No.2019ZD014);the Key Project of the ESI Discipline Development of Wuhan University of Technology(WUT Grant No.2017001)。

摘　　要：Dust accumulation is one of the reasons for the performance degradation of concentrating photovoltaic and thermal(CPV/T) systems due to the deposition of dust particles with different compositions, shapes, sizes, and masses. In this work, an optical model was developed to investigate the influence of the particle size, diameter, shape, and deposition density on the light concentration efficiency, using the Monte Carlo raytracing(MCRT) method in the Tracepro software. The triangular particles had a larger influence on the light ray deflection and energy flux degradation than the circular and square particles. An average increase in the dust density of 1 g/m^(2) decreased the light concentration efficiency of particles with sizes smaller than 50 μm and 60 μm by 3.31% and 3.26%, respectively. Furthermore, the effect of the incidence angle on the light concentration efficiency was considered at an angle less than 2°.

关 键 词：dust accumulation Fresnel CPV/T system light concentration efficiency Monte Carlo raytracing 

分 类 号：TM615[电气工程—电力系统及自动化] TK519[动力工程及工程热物理—热能工程]