A model-based approach for optical performance assessment and optimization of a solar dish
A model-based approach for optical performance assessment and optimization of a solar dish
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基于模型的太阳能碟式光学性能评估和优化方法
DOI：
10.1016/j.renene.2016.05.076
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发表时间：
2017
期刊：
影响因子：
8.7
通讯作者：
Ni Mingjiang
中科院分区：
文献类型：
--
作者：
Xiao Gang;Yang Tianfeng;Ni Dong;Cen Kefa;Ni Mingjiang
太阳能盘是一种点聚焦聚光器，聚光率非常高，从数百到数千。实用的评估和优化方法对于组装具有满意的聚光比和通量密度分布的太阳能盘片是必要的，这对于整个太阳能热系统获得高效率是非常重要的。太阳能天线盘通常由安装在具有双轴跟踪系统的支撑结构上的多个镜面组成。小镜面很容易制造，但许多镜面的对准非常具有挑战性。提出了一种基于模型的太阳帆板光学性能评估与优化方法，并通过通量密度测量对该方法进行了验证。模拟结果与实验结果具有很好的一致性，表明组装优化后，浓缩比和截留系数分别从∼5 0 0提高到∼15 0 0和0.6 6提高到0.9。
The solar dish is a point-focusing concentrator with a very high concentration ratio ranging from hundreds to thousands. Practical assessment and optimization methods are necessary to assemble solar dishes with satisfying concentration ratios and flux density distributions, which is very important for the overall solar thermal systems to achieve high efficiency. A solar dish usually consists of many mirror facets installed on a supporting structure with a dual-axis tracking system. Small mirror facets are easy to manufacture, but the alignment of many mirror facets is very challenging. A model-based approach for optical performance assessment and optimization of a solar dish was proposed, and flux density measurements were carried out to validate the approach. The simulation and experimental results showed very good consistency and suggested that the concentration ratio and the intercept factor could be increased from ∼500 to ∼1500 and 0.66 to 0.9 respectively after assembly optimization.