Solar flux distribution on central receivers: A projection method from analytic function
Solar flux distribution on central receivers: A projection method from analytic function
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DOI：
10.1016/j.renene.2014.08.016
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发表时间：
2015-02
期刊：
影响因子：
8.7
通讯作者：
Alvaro Sanchez-Gonzalez;D. Santana
中科院分区：
文献类型：
--
作者：
Alvaro Sanchez-Gonzalez;D. Santana
本文提出了一种将像面上的磁通分布投影到太阳能塔式电站任一中央接收器面板上的方法。由于在像面上方便地定义了由卷积方法导出的解析函数，因此它的斜投影解决了实际接收机中发现的畸变斑。由于其描述矩形聚焦定日镜通量分布的准确性，我们使用了Collado et al.（1986）在像面上的解析函数。基于投影法，我们开发了一个计算机代码，成功地面对PSA测量和SolTrace软件，无论是平板或多面板圆柱形接收器。经过验证的模型克服了蒙特卡罗技术的计算时间限制，具有相似的精度和更高的分辨率。对于野外的每个定日镜，除了计算光学损失之外，还计算了溢出；平行投影用于阴影和遮挡。由此产生的光学性能工具生成由整个定日镜场引起的通量图。研究了基于误差锥角估计反射光束半径的多目标瞄准策略。
This paper presents a methodology to project the flux distribution from the image plane into the panels of any central receiver in Solar Power Tower plants. Since analytic functions derived from the convolution approach are conveniently defined on the image plane, its oblique projection solves the distorted spot found in actual receivers. Because of its accuracy describing the flux distribution due to rectangular focusing heliostats, we make use of the analytic function on the image plane by Collado et al. (1986). Based on the projection method, we have developed a computer code successfully confronted against PSA measurements and SolTrace software, either for flat plate or multi-panel cylindrical receivers. The validated model overcomes the computation time limitation associated to Monte Carlo technique, with a similar accuracy and even higher level of resolution. For each heliostat in a field, the spillage is computed besides the rest of optical losses; parallel projection is used for shading and blocking. The resulting optical performance tool generates the flux map caused by a whole field of heliostats. A multi-aiming strategy is investigated on the basis of the radius of the reflected beams, estimated from error cone angles.