摘要
考虑太阳光不平行度,应用蒙特卡洛光线跟踪法及光线的镜面反射定律,并采用数值模拟的方法分析了焦面位置误差、指向误差等对一种新型展开式太阳能聚焦器焦面光斑形状及能流分布的影响。结果表明:焦面位置误差绝对值越大,焦面光斑半径越大,焦面能流峰值越小;焦面误差绝对值相同时,焦面光斑形状及能流分布几乎一样;指向误差越大,光斑越偏离焦面中心,并且光斑由圆形逐渐演变成椭圆形,光斑长短径之比越大。结论可以为该新型空间太阳能聚焦吸热系统的设计提供参考依据。
Considering the sun nonparallelism,Monte Carlo ray tracing method and specular reflection law are employed to simulate the effects of focal plane position error,pointing error to spot shape and energy distribution on focal plane of a new type of space solar concentrator.The results show that： with the absolute value of focal plane position error increasing,focal spot radius increases and peak energy flux value on focal plane decreases;when absolute value of focal plane position error is same,focal spot shape and energy distribution is almost the same;with pointing error increasing,the deviation of focal spot from the focal plane center increases and round focal spot becomes oval focal spot gradually.This will provide a reference for the new space solar concentrating and absorbing system design.
出处
《电力与能源》
2012年第2期174-176,180,共4页
Power & Energy
基金
江苏省优势学科项目资助
