Absorption distribution performances of double layer absorber for concentrated solar light

被引：0
|
作者：
Dai G. [1 ]
Xue X. [1 ]
Chen X. [1 ]
Lu Y. [1 ]
机构：
[1] Key Laboratory of New Energy and Energy-saving in Building, Fujian Province University, Fujian University of Technology, Fuzhou
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2021年 / 42卷 / 04期
关键词：
MCM; Optical design; Radiation performance; Solar absorber; Solar energy;
D O I：
10.19912/j.0254-0096.tynxb.2020-0691
中图分类号：
学科分类号：
摘要：
In order to adjust the absorption distributions of the concentrated solar radiation energy inside the absorber, a double-layer absorber model that consists of tube bundles of the quartz glass and the porous materials was proposed and tested. The transferring process of the concentrated solar radiation inside the double-layer absorber was simulated by an accelerated Monte-Carlo ray-tracing method considering the mirror reflection, anisotropic Scattering and the medium absorption. Results show that most (> 90%) concentrated solar radiation energy enables to penetrate into the porous material absorber. The peak value of the solar absorption is located at the entrance of the porous material absorber, which realizes the gradient increase of the solar absorption inside the absorber. Moreover, the peak value of absorptance/emittance of the double-layer absorber is up to 3.05. The conclusions provide valuable reference for the development of the volumetric solar receivers. © 2021, Solar Energy Periodical Office Co., Ltd. All right reserved.
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页码：328 / 333
页数：5
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