Simulation and experimental study on a spiral solid particle solar receiver
Simulation and experimental study on a spiral solid particle solar receiver
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DOI：
10.1016/j.apenergy.2013.06.045
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发表时间：
2014
期刊：
影响因子：
11.2
通讯作者：
G. Xiao;Kaikai Guo;Zhong-yang Luo;M. Ni;Yanmei Zhang;Cheng Wang
中科院分区：
文献类型：
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作者：
G. Xiao;Kaikai Guo;Zhong-yang Luo;M. Ni;Yanmei Zhang;Cheng Wang
提出了一种固体颗粒太阳能接收器，将聚光的太阳光束转化为热能，用于两级碟式系统的高温蓄热。采用球形x弧灯模拟太阳光源。对该接收机在x弧灯阵列下的性能进行了实验和数值研究。当孔径上的平均通量为~ 19.3 kW/m2时，单次通过的温度升高超过350℃，光效和热效率分别为~ 84%和60%。采用蒙特卡罗射线追迹法对聚光光束进行模拟，并结合热转换模型。在低辐射通量条件下验证了耦合模型，并将其用于高辐射通量条件下固体颗粒接收机性能的预测。模拟结果表明，在平均通量为150 kW/m2时，单道颗粒的最终温度可提高到1100℃以上。此外，通过减少辐射发射可以提高接收机的效率。
A solid-particle solar receiver was proposed to convert concentrated solar beams into heat for high-temperature thermal storage in a two-stage dish system. Spherical Xe-arc lamps were used to simulate a solar light source. The performances of this receiver under a Xe-arc lamp array system were experimentally and numerically investigated. For a single pass, the temperature increase exceeded 350 °C, and the optical efficiency and thermal efficiency were ∼84% and 60%, respectively, when the average flux on the aperture was ∼19.3 kW/m2. A Monte-Carlo ray-tracing method was used to simulate concentrating beams, which was integrated with a thermal conversion model. The coupled model was validated under low radiation flux conditions and then used to predict the solid-particle receiver performance under high radiation flux conditions. The simulation results indicate that the final temperature of the single-pass particles would increase to over 1100 °C under an average flux of 150 kW/m2. In addition, the efficiency of the receiver could be enhanced by reducing the radiative emission.