太阳能塔式电站镜场对地面的遮阳分析  

Shadow of Heliostat Fleld in the Solar Tower Power Plant

作　　者：王瑞庭[1] 魏秀东[2] 

机构地区：[1]吉林大学数学学院,长春130022 [2]中国科学院长春光学精密机械与物理研究所光电技术研发中心,长春130033

出　　处：《光子学报》2009年第9期2414-2418,共5页Acta Photonica Sinica

基　　金：国家高科技研究发展计划和中国科学院知识创新工程重要方向项目(2006AA050101;2006AA05010102和2006AA05010501)资助

摘　　要：分析了拟建于北京市延庆县的1 MW太阳能塔式电站定日镜场对地面的遮阳情况.采用光线追迹计算了定日镜对地面的阴影.为了精确计算镜场对地面的阴影面积,提出了相邻镜面间阴影率的计算方法,并推导了计算公式.提出了在一段时期内地面日照时间分布的统计方法.使用MATLAB编程模拟了镜场对地面的阴影以及地面日照时间分布情况,并能够绘制任意时刻地面阴影图和任意时期内地面日照时间分布图.The shadow of the heliostat field on the ground in the 1 MW solar tower power plant, which will be built in the Yanqing town of the Beijing city, is analyzed. The shadow of the heliostat on the ground is calculated with ray trace method. For calculating the shadow area of the heliostat field on the ground accurately, the calculation method of the shading ratio among the adjacent heliostats is proposed and the theoretic formulas are derived. The statistical method of the sunlit time distribution on the ground in a period is proposed. The program based on the MATLAB is developed for modeling the shadow of the heliostat field and the sunlit time distribution on the ground. The shadow pattern of the field at any time and the sunlit time distribution on the ground in any period can be made with the program.

关 键 词：太阳能塔式电站 定日镜场 光线追迹 阴影率 日照时间 

分 类 号：TK514[动力工程及工程热物理—热能工程]