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首页> 外文期刊>Energy Conversion & Management >Development of an analytical method and its quick algorithm to calculate the solar energy collected by a heliostat field in a year
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Development of an analytical method and its quick algorithm to calculate the solar energy collected by a heliostat field in a year

机译：开发一种用于计算定日镜场一年中收集的太阳能的分析方法及其快速算法

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In this paper, we firstly propose an analytical equation to calculate the energy collected by the heliostat field. A ray tracing method is developed based on the analytical equation. Then we introduce three approximations to reduce computation spending, and estimate the errors caused by these approximations. A fast and accurate algorithm is developed with the three approximations to calculate the energy collected by the heliostat field over a year. It was compared with the ray tracing results, which shows good consistency with them. With the method, the energy collected and efficiency of each heliostat in a year can be computed exactly and rapidly, the difference between the method and ray tracing method is less than 0.1% for the energy collected by a heliostat over a day. It needs only about 0.1% computation time used by ray tracing method to calculate the intercept factor of a heliostat at a moment, and 2.67 h to compute the annual collected energy of PS10 heliostat field by using one CPU of i3 processor when the time span for integration is 5 min and each heliostat is calculated.
机译：在本文中，我们首先提出一个解析方程来计算定日镜场收集的能量。基于解析方程，提出了一种射线追踪方法。然后，我们引入三个近似值以减少计算开销，并估计由这些近似值引起的误差。利用三个近似值开发了一种快速准确的算法，以计算定日镜场在一年内收集的能量。将其与射线追踪结果进行了比较，结果表明它们具有良好的一致性。使用该方法，可以准确，快速地计算出一年中每个定日镜的能量收集和效率，该方法与光线跟踪方法之间的差异对于一天天的定日镜收集的能量小于0.1％。光线跟踪方法只需要约0.1％的计算时间即可立即计算定日镜的截距因子，而使用i3处理器的一个CPU则只需2.67 h即可计算出PS10定日镜场的年收集能量。积分为5分钟，并计算每个定日镜。

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