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首页> 外文期刊>International journal of green energy >Modeling and Performance Evaluation of Parabolic Trough Solar Cavity-Type Receivers
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Modeling and Performance Evaluation of Parabolic Trough Solar Cavity-Type Receivers

机译：抛物槽太阳腔型接收器的建模与性能评估

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摘要

This article proposed three new designs about parabolic trough solar cavity-type receivers. The characteristics of these designs were also analytically analyzed. In the paper, the geometrical-optical method is used to analyze the absorptivity of these cavity receivers. The influences of the specular reflection ratio in absorptivity were also discussed. The geometrical-optical method was validated using the Monte Carlo Method. The study showed that the results calculated by different method can agree well. The study also showed that the proposed receiver models have less optical losses than conventional cylindrical/tubular cavity receiver under the limitation of the same-size aperture. Most of radiant energy entering into the cavity is absorbed through the initial reflection. The theoretical absorptivity of these cavities approaches to blackbody. The study also showed that the absorptivity increases monotonously with the proportion of specular reflection and the depth of the cavity.
机译：本文提出了三种关于抛物槽太阳腔型接收器的新设计。还对这些设计的特征进行了分析。在本文中，使用几何光学方法来分析这些腔体接收器的吸收率。还讨论了镜面反射率对吸收率的影响。使用蒙特卡洛方法验证了几何光学方法。研究表明，用不同方法计算的结果可以很好地吻合。研究还表明，在相同尺寸孔径的限制下，所提出的接收器模型比传统的圆柱/管状腔接收器具有更少的光学损耗。进入腔体的大部分辐射能通过初始反射吸收。这些腔的理论吸收率接近黑体。研究还表明，吸收率随镜面反射的比例和腔深度的增加而单调增加。

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  • 来源
    《International journal of green energy》 |2015年第12期|1263-1271|共9页
  • 作者

    Gao Wei; Xu Guoqiang; Li Tingting; Li Haiwang;

  • 作者单位

    Beihang Univ, Sch Energy & Power Engn, Natl Key Lab Sci & Technol Aeroengine Aerothermod, Beijing 100191, Peoples R China;

    Beihang Univ, Sch Energy & Power Engn, Natl Key Lab Sci & Technol Aeroengine Aerothermod, Beijing 100191, Peoples R China;

    Beihang Univ, Sch Energy & Power Engn, Natl Key Lab Sci & Technol Aeroengine Aerothermod, Beijing 100191, Peoples R China;

    Beihang Univ, Sch Energy & Power Engn, Natl Key Lab Sci & Technol Aeroengine Aerothermod, Beijing 100191, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Geometrical-optical; Parabolic trough; Cavity-type; Receiver; Absorptivity;

    机译：几何光学抛物槽腔型接收器吸收率;

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