Li Lifeng, Wang Bo, Pye John, Bader Roman, Wang Wujun, Lipiński Wojciech
Opt Express. 2020 Dec 7;28(25):37654-37668. doi: 10.1364/OE.404867.
A multi-aperture solar central receiver system is optically analyzed for increasing the net power to the receiver in a wide temperature range of 600-1800 K. A model system comprises a tower, a multi-aperture receiver with compound parabolic concentrators, and heliostat sub-fields. Optical modeling is performed using in-house developed Monte-Carlo ray-tracing programs. The heliostat sub-field geometrical configuration, the number of receiver apertures and optical properties of reflective surfaces are varied in the parametric study. Increasing the number of apertures from one to four increases the maximum net receiver power from 116 MW to 332 MW. The use of more than four apertures results in only limited further gain of the net receiver power but significantly decreases the overall optical efficiency and the solar-to-thermal efficiency. The optimal temperature for the maximized annual solar-to-exergy efficiency is found in the range of 1100-1200 K. This optimal temperature decreases slightly with an increasing number of apertures.
对一种多孔径太阳能中央接收器系统进行了光学分析，目的是在600 - 1800 K的宽温度范围内提高接收器的净功率。一个模型系统包括一座塔、一个带有复合抛物面聚光器的多孔径接收器以及定日镜子场。使用内部开发的蒙特卡罗光线追踪程序进行光学建模。在参数研究中，改变了定日镜子场的几何构型、接收器孔径的数量以及反射面的光学特性。将孔径数量从一个增加到四个，可使接收器的最大净功率从116兆瓦增加到332兆瓦。使用超过四个孔径只会使接收器的净功率进一步有限增加，但会显著降低整体光学效率和太阳能-热能转换效率。使年太阳能-火用效率最大化的最佳温度在1100 - 1200 K范围内。随着孔径数量的增加，这个最佳温度会略有下降。
