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首页> 外文会议>International Conference on Concentrating Solar Power and Chemical Energy Systems >Numerical study and optimization of mirror gap effect on wind load on parabolic trough solar collectors
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Numerical study and optimization of mirror gap effect on wind load on parabolic trough solar collectors

机译：抛物面槽太阳能收集器风荷载对镜面差距影响的数值研究与优化

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Parabolic trough collector (PTC) technology is currently the most proven and widely used solar thermal electric technology. These systems are usually located in open terrain where strong winds may occur and affect their stability and optical performance. As tiny deformation of collectors under the action of strong wind will influence the focusing accuracy and increase the structure demands of the collectors, it leads to the increase of the cost of collectors. It is particularly important to study the effect of wind load on parabolic trough solar collectors. In this context, different axial and radial gap sizes (0-0.06m) between the mirrors of PTC on wind load were studied numerically based on computational fluid dynamics (CFD). Wind load on collectors is decreased by around 13% with the axial gap extending from 0 to 0.06m while the effect of radial gap on wind load is small. Furthermore, the optimization model between the wind load and mirror gap was obtained by response surface methodology (RSM). The optimal gap size within 0m to 0.06m for a parabolic trough solar collector was predicted by particle swarm optimization (PSO). The result shows the optimum axial gap is 0.06m and the optimum radial gap is 0.02m.
机译：抛物线槽收集器（PTC）技术目前是最熟悉和广泛应用的太阳能热电技术。这些系统通常位于打开的地形中，可能会发生强风并影响其稳定性和光学性能。由于强风的作用下收集器的微小变形将影响聚焦准确性并提高收藏家的结构需求，导致收藏家的成本增加。研究风负荷对抛物面槽太阳能收集器的影响尤为重要。在这种情况下，基于计算流体动力学（CFD），对风负荷的PTC镜子之间的不同轴向和径向间隙尺寸（0-0.06m）进行了数值研究。收集器上的风负荷减少约13％，轴向间隙从0到0.06米延伸，而径向间隙对风荷载的影响很小。此外，通过响应表面方法（RSM）获得风负荷和镜面间隙之间的优化模型。通过粒子群优化（PSO）预测了抛物线槽太阳能收集器的0m至0.06米内的最佳间隙尺寸。结果显示最佳轴向间隙为0.06米，最佳径向间隙为0.02米。

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