摘要
塔式太阳能发电技术是光热发电领域中最具前景的发电形式之一,提高其余弦效率对于提升电站整体光学效率至关重要。通过增加镜场边界二次反射镜的方法优化镜场余弦效率,首先,根据定日镜反射原理,在部分镜场区域增加边界二次镜,使光线经二次反射后与太阳方位角保持同步。其次,以提高镜场余弦效率为目标,仿真确定了二次反射镜的安装区域及最佳位置。研究结果表明:增加二次反射镜区域镜场的余弦效率提升了19%,镜场整体余弦效率提升了7.6%,增加镜场边界二次反射镜是提升系统光学效率的一种可行方案。
Tower-type solar power generation technology is one of the most promising power generation forms in the field of photothermal power generation,and improving its cosine efficiency is of vital importance for improving the overall optical efficiency of power stations.The cosine efficiency of the mirror field is optimized by adding secondary mirrors to the mirror field boundary.Firstly,according to the heliostat reflection principle,a boundary secondary mirror is added in part of the mirror field area to keep the rays of light synchronized with the sun azimuth angle after secondary reflection.Secondly,in order to improve the cosine efficiency of the mirror field,the installation area and the best position of the secondary mirrors are determined by simulation.The results show that the cosine efficiency of the mirror field in the secondary mirror area is improved by 19%,and that the overall cosine efficiency of the mirror field is increased by 7.6%.Conclusion is drawn as follows:It is a feasible method to increase the optical efficiency of the system by adding a secondary mirror at the boundary of mirror field.
作者
李泽
王成龙
LI Ze;WANG Chenglong(National Engineering Research Center for Technology and Equipment of Environmental Deposition,Lanzhou Jiaotong University,Lanzhou Gansu 730070,China;Key Laboratory of Opto-technology and Intelligent Control of Ministry of Education,Lanzhou Jiaotong University,Lanzhou Gansu 730070,China)
出处
《湖北电力》
2023年第6期1-7,共7页
Hubei Electric Power
基金
国家自然科学基金(项目编号:52066010)
甘肃省科技计划项目(项目编号:20YF8GA039)。
关键词
太阳能
光热发电
塔式太阳能
余弦效率
二次反射镜
solar energy
photothermal power generation
tower-type solar energy
cosine efficiency
secondary reflection mirror
