摘要
针对槽式复合多曲面聚光器聚光效率随入射偏角增大而减小的问题,文中设计一种新型槽式复合多曲面聚光光伏光热供能装置,通过在装置入光口玻璃盖板内表面增设多晶硅太阳能电池,实现了装置逸出光线的发电再利用,提高了装置非追日状态下供能总量和综合利用效率.利用光学仿真软件对不同入射偏角下装置内光线进行了追迹,计算分析了接收体表面能流密度分布变化趋势,基于此,在实际天气条件下,搭建槽式复合多曲面聚光光伏光热供能装置性能测试试验台,研究装置进出口温差、太阳能电池发电功率等随太阳辐照度的变化规律.结果显示,当入射偏角为12°,仅有少量光线从槽式复合多曲面聚光光伏光热供能装置入光口逸出,晴好天气条件下,装置的进出口温差与太阳辐照度变化趋势一致,最大为14.1℃,当太阳光入射偏角非零时,多晶硅太阳能电池发电功率大于太阳光入射偏角为零时的电池发电功率,装置最大综合利用效率为75.4%.
Aiming at the problem that the concentration efficiency of the trough compound parabolic concentrator(CPC)decreases with the increase of the incidence angle,a novel trough type Compound Parabolic Concentration photovoltaic thermal device was presented by installing polycrystalline silicon solar cells in the concentrator in this study,which can realize the power generation and utilization of the light escaping from the concentrator and improve the total energy supply and comprehensive utilization efficiency of the device under the non-tracking state.Optical simulation software was used to trace the light in the concentrator under different incidence angles,and the trend of energy density on the surface of the receiver was calculated and analyzed.Based on this,an experimental unit of trough type Compound Parabolic Concentration photovoltaic thermal device was built,and the variation of the temperature difference between the inlet and outlet of the device and the power of solar cells with the solar irradiance was tested and studied under actual weather.The results indicate that,when the incidence angle is 12°,only a few amounts of light escapes from the light entrance of the trough type Compound Parabolic Concentration photovoltaic thermal device.In sunny day,the effect of temperature difference between the inlet and outlet of the device is consistent with the trend of solar irradiance,and the maximum value is 14.1℃.When the incidence angle of sunlight is non-zero,the power generated by polysilicon solar cells is greater than that at noon,and the maximum comprehensive utilization efficiency of the device is 75.4%.
作者
郭帅军
刘雪东
姜洪峰
常泽辉
Guo Shuaijun;Liu Xuedong;Jiang Hongfeng;Chang Zehui(College of Energy and Power Engineering,Inner Mongolia University of Technology,Hohhot Inner Mongolia 010051;School of Civil Engineering,Inner Mongolia University of Technology,Hohhot Inner Mongolia 010051;Engineering Center of Solar Energy Utilization Technology,Inner Mongolia University of Technology,Hohhot Inner Mongolia 010051)
出处
《东北电力大学学报》
2021年第1期8-14,共7页
Journal of Northeast Electric Power University
基金
国家自然科学基金项目(51966012,51666013)
内蒙古自治区高校青年科技英才支持计划(NJYT-18-A12)
内蒙古自治区科技重大专项(2018)
内蒙古自治区研究生科研创新项目。
关键词
复合多曲面聚光
光伏光热
性能
太阳能
Compound parabolic concentration
photovoltaic thermal
performance
solar energy
