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Heliostat field aiming strategies for solar central receivers

机译:Heliostat领域太阳中央接收器的旨在策略

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This thesis work deals with the development and validation of four optical models for Solar PowerTower technology. The first model accurately computes the solar flux distribution incident on anycentral receiver reflected by a single heliostat; the novelty relies on the oblique projection of thereceiver mesh onto the image plane where an analytic convolution function is evaluated. The secondmodel determines the canting errors in the facets of real heliostats using a deterministic optimizationalgorithm that minimizes the difference between computed flux maps and experimental imagescaptured on a Lambertian target. The third model extends the basic model to complete fields ofheliostats where a symmetric aiming strategy is developed; just a single parameter, novel k factor, isneeded to aim all the heliostats. The last aiming model maximizes the output in molten salt receiverswhile meeting the corrosion and thermal stress constraints; which are translated into allowable fluxdensities.
机译:本文涉及太阳能技术四种光学模型的开发和验证。第一种模型精确计算入射在由单个光晕挡板反射的任何情分接收器上的太阳能通量分配;新颖性依赖于将治疗器网格的倾斜投影依赖于评估分析卷积功能的图像平面上。第二模型使用确定性优化算法确定真正的Heliostats的小平面中的倾倒误差,这最小化了计算的通量图与兰伯语靶标的实验镜头之间的差异。第三种模型将基本模型扩展到完整的Heliostats领域,其中开发了对称的旨在策略;只是一个参数,新的k因子,有效地瞄准了所有的光晕目录。最后一个瞄准模型最大化熔盐接收器中的输出,同时满足腐蚀和热应力约束;这被翻译成允许的浮动功能。

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