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提出一种基于折平板聚光器的光电光热分频利用系统,利用蒙特卡洛法对比分析3种不同结构分频利用系统的光学性能,重点研究集热石英管的几何参数、表面反射率及真空层对透光效率、光斑均匀性的影响。结果表明:先分频后聚光系统与先聚光后分频系统相比,前者具有更高的光斑均匀度与透光效率,但无法获得高品位热能;先聚光后分频系统中集热管形状分别为矩形与半圆形,矩形集热管系统的透光效率较半圆形集热管系统高,而光斑均匀度较半圆形集热管系统低;在石英管内外壁面间布置真空层,透光效率显著降低,能量损失主要由表面反射所引起。
This paper presents a system based on the folding plate condenser optoelectronic optical heating and frequency demultiplication, using the Monte Carlo method to compare and analyze the optical performance of the system using three different structures, mainly focusing on the geometrical parameters of the collector quartz tube, the surface reflectance And the vacuum layer on the light transmission efficiency, spot uniformity. The results show that the former frequency-division condenser system has higher spot uniformity and light transmission efficiency than the first condenser post-frequency-division system, but can not obtain high-grade heat energy. The shape of the heat pipe is rectangular and semicircle respectively. The translucent efficiency of the rectangular heat pipe system is higher than that of the semicircle heat pipe system, but the uniformity of the light spot is lower than that of the semicircular heat pipe system. The vacuum layer is arranged between the inner and the outer walls of the quartz pipe, Light transmission efficiency is significantly reduced, the energy loss is mainly caused by the surface reflection.