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塔式太阳能电站定日镜场的建模与仿真

, PP. 90-97

Keywords: 太阳能流,定日镜场,腔式吸热器,建模,仿真

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Abstract:

塔式太阳能电站腔式吸热器内表面的能流分布特征不仅对于电站控制系统的设计具有一定的指导作用,而且对于整个电站的安全运行具有极其重要的意义。该文以1MW?大汉?塔式太阳能电站的聚光-吸热系统为研究对象,采用蒙特卡洛光线追迹法,建立了定日镜场的动态仿真模型。根据最终的定日镜场布置,在给定太阳辐射模型下,不仅对春分日腔式吸热器内表面的平均能流密度随时间的变化进行了模拟,同时对不同时刻的腔内能流分布特征进行了分析。结果显示,从镜场聚焦的入射能流主要分布在吸热器背侧和两侧表面。文中所得结论对吸热器的优化、控制系统的设计以及整个系统的安全运行具有一定的参考意义。

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