用于光伏玻璃幕墙的聚光系统设计与研究

Design and Research of Concentrator Systemfor Photovoltaic Glass Curtain Wall

为了能同时满足光伏玻璃幕墙的采光和建筑发电需求,设计了一种由双抛物线结构和导光板组成的混合式聚光器。主要介绍了聚光器的构成,并对其性能进行了初步的测量分析。这种新型的聚光器的几何聚光比为6,系统效率在90%,通过比较不同单元模块宽度的聚光器和不同移动距离的聚光器模型,测量了变量与入射偏角的曲线,得到聚光器的接收范围为±3°。在垂直入射条件下,聚光系统的光伏模块效率可以达到70%,减少室内的眩光。最后使用DIALUX软件对新型系统采光进行了辐照度分析,全天辐照度超过300 lx,照度均匀度达到了0.956。结果表明聚光系统用于光伏玻璃幕墙是可行的,可以提高使用舒适度,也降低了建筑成本,该系统的实用性可以替代传统中空玻璃。

To satisfy both the daylighting and building power generation requirements of the photovoltaic glass curtain wall,a hybrid concentrator composed of a double parabolic structure and a light guide plate was designed.The structure of concentrator is introduced,and its performance is measured and analyzed.The geometric concentrating ratio of the concentrator is 6,and the system efficiency is 95%.By comparing the concentrator models with different cell widths and different moving distances,the deflection angle curve with incident is measured,and the receiving range of the concentrator is±3°.Under the condition of vertical incidence,the photovoltaic module efficiency of the concentrating system can reach 70%and reduce the indoor glare.Finally,the irradiance of the new system was analyzed by using DIALUX software.The irradiance of the whole day was more than 300 lx and the irradiance uniformity reached 0.956.These results indicate that the concentrating system is feasible for photovoltaic glass curtain wall,which can improve the comfort and reduce the construction cost.The system can replace the traditional hollow glass.