该文设计一种用于小型塔式太阳能电站的热管接收器。基于蒙特卡洛光线追迹（MCRT）算法和混合编程方法,开发光学仿真程序。详细研究单根热管表面热流密度时空分布规律和热管接收器表面能量动态分布规律,并分析接收器瞬时光学性能。研究结果表明单根热管表面热流密度具有强烈非均匀性。夏至日正午,吸热面中心单根热管吸收能量约为6.9 kW。春分日和夏至日时,接收器最大光学效率约为75%;冬至日最大光学效率约为61%。研究结果有助于进一步研究热管接收器的光热耦合机理。
Abstract
A heat pipe receiver is designed for a small tower solar power station in this article. Real-time optical simulation procedures are developed based on Monte Carlo ray tracing method and mixed programming method. The spatial and temporal distribution of hea flux on the surface of a single heat pipe and the dynamic distribution of energy on the surface of the heat pipe receiver are studied in detail. The real-time optical performance of the receiver is also analyzed. The results show that the solar flux on a single heat pipe exhibits a significant non-uniformity. On the summer solstice, the total energy absorbed by the heat pipe near the receiver center is approximately 6.9 kW. On the spring equinox and summer solstice, the maximum optical efficiency of the receiver is approximately 75%; whereas the value is only 61% on the winter solstice. The results are helpful to the further study of the solar-thermal mechanism of the heat pipe receiver.
关键词
塔式太阳能热发电 /
热管接收器 /
热流密度分布 /
光学性能 /
蒙特卡洛光线追迹法
Key words
solar power tower /
heat pipe receiver /
heat flux distribution /
optical performance /
Monte-Carlo ray tracing method
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基金
国家自然科学基金重点项目（51736006）
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