线性菲涅尔集热系统焦距优化建模仿真及实验验证
张志勇, 孔令刚, 范多进, 路小娟

Modeling Simulation and Experimental Verification of Focal Length Optimization in Linear Fresnel Collector
Zhiyong ZHANG, Linggang KONG, Duojin FAN, Xiaojuan LU
图7 太阳张角引起的光斑宽度与焦距的对应关系
Fig. 7 The corresponding relationship between light spot width and focal length caused by the solar angle