论文部分内容阅读
对线性菲涅尔集热器的聚光性能和光学效率进行了模拟与计算.根据几何光学原理,对集热器镜场各项光学损失(如余弦损失、阴影与遮挡损失)建立数学模型,计算出每项光学损失对应的光学效率.再用TracePro光学软件建立集热器的几何模型,利用光线追踪的方法,模拟入射到镜场的光线在模型空间的传播.光线在模型表面发生吸收、反射和散射等过程,追踪每束光线的光通量,计算得到集热器的光学效率和聚光比等性能参数.结果表明:通过数学模型和光学软件模拟得出的集热器光学效率一致,2种方法分别从细节与整体上剖析了影响集热器光学性能的因素,在集热器设计中可以结合使用,互相补充.
The concentrating performance and optical efficiency of the linear Fresnel collector were simulated and calculated.According to the geometrical optics principle, the mathematical models of various optical losses (such as cosine loss, shading and occlusion loss) of the collector field were established, The optical efficiency corresponding to each optical loss is calculated, then the geometric model of the collector is established by using TracePro optical software, and the ray tracing is used to simulate the propagation of the light incident on the mirror field in the model space.The light absorbs on the model surface, Reflection and scattering, tracking the luminous flux of each beam and calculating the performance parameters such as the optical efficiency and the concentration ratio of the collector, etc. The results show that the optical efficiency of the collector obtained by the mathematical model and optical software simulation is the same, 2 The methods separately analyze the factors affecting the optical performance of the collector from the details and overall aspects, and can be used together in the collector design to complement each other.