Research and Design of Compound Fresnel Concentrator

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Niu, Xiaohan^1 ; Zhu, Changqing^1

Department of Vehicle and Electrical Engineering, Army Engineering University, Shijiazhuang Campus University, Shijiazhuang, Hebei

050003, China^1

关键词: 3-d modeling;    Compact structures;    Focal lengths;    Fresnel formula;    Fresnel lens;    High lights;    Ray tracing simulation;    Total reflection;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/4/042119/pdf
DOI  :  10.1088/1755-1315/170/4/042119

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

An efficient and compact concentrator Fresnel concentrator is discussed and designed,The central region is a conventional Fresnel lens designed according to Snell's law of refraction,The edge region is designed to be TIR (internal total reflection) prism.According to the Fresnel formula,the best segmentation position and the optimum focal length of two kinds of lens are calculated,and use SolidWorks to build 3D model,The ray tracing simulation of the designed lens is carried out by using TracePro software.The results show that the efficiency is 89.6% and the F/# is 0.5 at high concentration. The efficiency of the traditional Fresnel concentrator is only 66% when the F/# is the same. The design goal of compact structure and high light performance is achieved.