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Design and experimental study of a 30 kWe adjustable solar simulator delivering high and uniform flux
Applied Thermal Engineering ( IF 6.4 ) Pub Date : 2021-06-12 , DOI: 10.1016/j.applthermaleng.2021.117215
Jikang Wang , Yu Qiu , Qing Li , Mingpan Xu , Xiudong Wei

To make a good compromise between the flux uniformity and the high peak flux of the light spot, a new high-flux solar simulator (HFSS) with the continuously adjustable input power of 6–30 kWe was designed and studied in this paper. In the design, three 10 kWe xenon arc lamps, which can provide good solar-like irradiation, were selected as the light sources, and the lamps were reasonably arranged in the HFSS to achieve the high peak flux. Meanwhile, a kind of non-coaxial ellipsoidal reflector was specifically designed to concentrate the irradiation of each lamp and reduce the flux non-uniformity of the light spot. After the design and construction, an indirect measurement method was employed to determine the performance of the HFSS. Firstly, error analysis of the method indicatesd that the measured errors of the flux and the accumulated power are 7.9% and 8.0%, respectively, which are reasonable and acceptable. Then, sensitivity analysis of photo quantity recommended that the average greyscale of light spot obtained from 10 raw photos are accurate enough for data processing. Finally, the measuring results demonstrated that the flux distributions of the individual lamp and the HFSS both show good uniformity. As the input power of the HFSS increases from 6 kWe to 30 kWe, the system efficiency increases from 26.22% to 31.78%. The corresponding accumulated power within a 100 mm diameter light spot increases from 1.573 kW to 9.534 kW, and the peak flux reaches 1.709 MW·m−2 to 8.568 MW·m−2 under different input power. The good flux uniformity and the highest peak flux of 8.568 MW·m−2 indicated that this HFSS can satisfy the requirement of indoor CSP experiments. The contradiction between high flux and good flux uniformity was solved effectively, and the performance of the HFSS was boosted significantly. Therefore, the designed HFSS can be suitable and practical for the CSP experiments.



中文翻译:

提供高且均匀通量的 30 kWe 可调太阳模拟器的设计和实验研究

为了在光斑的通量均匀性和高峰值通量之间取得良好的折衷,本文设计并研究了一种具有6-30 kWe连续可调输入功率的新型高通量太阳模拟器(HFSS)。设计中选择了三盏10kWe氙弧灯作为光源,在HFSS中合理布置,以达到高峰值通量。同时,专门设计了一种非同轴椭球反射器,以集中每盏灯的照射,减少光斑的通量不均匀性。在设计和施工之后,采用间接测量方法来确定 HFSS 的性能。首先对该方法的误差分析表明,测得的通量和累积功率的误差为7。分别为 9% 和 8.0%,合理且可以接受。然后,照片数量的敏感性分析表明,从10张原始照片中获得的光斑平均灰度足以进行数据处理。最后,测量结果表明,单个灯和 HFSS 的通量分布均表现出良好的均匀性。随着HFSS的输入功率从6 kWe增加到30 kWe,系统效率从26.22%增加到31.78%。100 mm直径光斑内对应的累积功率从1.573 kW增加到9.534 kW,峰值通量达到1.709 MW·m 最后,测量结果表明,单个灯和 HFSS 的通量分布均表现出良好的均匀性。随着HFSS的输入功率从6 kWe增加到30 kWe,系统效率从26.22%增加到31.78%。100 mm直径光斑内对应的累积功率从1.573 kW增加到9.534 kW,峰值通量达到1.709 MW·m 最后,测量结果表明,单个灯和 HFSS 的通量分布均表现出良好的均匀性。随着HFSS的输入功率从6 kWe增加到30 kWe,系统效率从26.22%增加到31.78%。100 mm直径光斑内对应的累积功率从1.573 kW增加到9.534 kW,峰值通量达到1.709 MW·m-2至 8.568 MW·m -2在不同输入功率下。良好的通量均匀性和8.568 MW·m -2 的最高峰值通量表明该HFSS可以满足室内CSP实验的要求。有效解决了高通量与良好的通量均匀性之间的矛盾,显着提升了HFSS的性能。因此,所设计的 HFSS 可以适用于 CSP 实验并具有实用性。

更新日期:2021-06-18
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