Optical Analysis of Fresnel lens for concentrating PV system
Concentrating PV systems usually use Fresnel lens as radiation concentrator. In this paper, in order to study the concentrating performance of the Fresnel lens, modular Fresnel lens mode was developed and its optical performance was analyzed by the ray tracing method. The imaging characteristic of Fresnel was studied and the optimal imaging location and the size of dispersion spot with different inlet angle were figured out. Flux distribution of the different imaging plane were also examined and compared. The results show that the dispersion spot deviates from the focus and the size of the dispersion spot is enlarged as the incidence angle increase, especially at the high geometric concentration ratio. Then in order to solve the problem, a flat light pipe was applied to reflect sun light onto the absorber plane. The simulation results show that with the new design, sun lights with large inlet angle could also be casted on the absorber.
Optical Analysis Fresnel Lenses Concentrating PV Ray Tracing Method
F.Q.Cui Y.L.He R.J.Xu Y.B.Tao
State Key Laboratory of Multiphase Flow in Power Engineering, Xian Jiaotong University, China
国际会议
西安
英文
244-251
2009-07-11（万方平台首次上网日期，不代表论文的发表时间）