Numerical simulation on the optical and thermal performance of a modified integrated compound parabolic solar concentrator
Numerical simulation on the optical and thermal performance of a modified integrated compound parabolic solar concentrator
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改进型集成复合抛物面太阳能聚光器光热性能数值模拟
DOI：
10.1002/er.3338
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发表时间：
2015-10
影响因子：
4.6
通讯作者：
Xin-Rong Zhang
中科院分区：
文献类型：
--
作者：
Lin Chen;Jia-Xiang Chen;Xin-Rong Zhang
本文对具有管状吸收体的二维抛物面集热器进行了系统的分析。为了更有效地进行实际设计，对集热器的外形进行了一些改进，如降低反射器的高度、在吸收器和反射器之间设置间隙、保持集热器内部的真空空间等，并利用光线追迹法建立了数值模型，对改进后的集热器的性能进行了研究。以北京市为例，定量地讨论了集热器取向效应。发现东-西取向对于集流体是最佳的。在这项研究中，季节性收集器性能仔细模拟不同纬度条件。结果表明，集热器以一季调节一次为宜。在这项研究中还确定了不同时期的最佳收集器倾斜角。版权所有© 2015约翰威利父子有限公司
In this study, two dimensional parabolic collectors with tubular absorber are systematically analyzed. For more effective practical design, modifications are made in the profile of the collector, for example, truncating the reflector to a lower height, making a gap between the absorber and the reflector, maintaining a vacuum space inside the collector, and so on. By using ray tracing method, a numerical model is developed to study the performance of the modified collector. In the analysis, Beijing city is taken as one basic case; the collector orientation effect is discussed in a quantitative way. It is found that east‐west orientation is best for the current collector. Seasonal collector performances are carefully simulated for different latitude conditions in this study. The results indicate that it is better to regulate the collector once in a season. The optimal collector slope angles for different periods are also identified in this study. Copyright © 2015 John Wiley & Sons, Ltd.
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