摘要
为了研究散射误差对碟式太阳能聚光性能的影响,采用蒙特卡罗光线跟踪法对碟面聚光反射进行了计算;分析反射光聚集到集热器端面的热流密度分布情况;对比了散射误差为1.75、2.50、5.00、10.00 mrad时的热流密度分布差异。结果表明:热流密度在集热器端面分布均匀,中心点密度高且热流密度接近圆形分布;随着碟式抛物面聚光镜散射误差的增大,集热器端面热流密度的分布趋于分散;热流密度与聚光特性成正比,热流密度越小,碟式太阳能聚光器聚光性能越差。
In order to study the effect of scattering error on concentrating performance of dish solar energy collector, the Monte Carlo ray-tracing method was used to calculate the concentrating reflection. The distribution of heat flux of the reflected light to the collector end face is studied, and the heat flow density distribution differences when the scattering error is 1.75 mrad, 2.50 mrad, 5.00 mrad and 10.00 mrad were compared. The result indicates that, at the collector end, the heat flux density is close to the circular distribution. With the increasing scattering error, the distribution of the heat flux distribution tends to disperse. The lower the heat flux, the worse the condenser performance.
出处
《热力发电》
CAS
北大核心
2017年第9期78-82,共5页
Thermal Power Generation
基金
国家自然科学基金项目(51576062)
中央高校基本科研业务费专项基金资助项目(2016MS25)~~
关键词
蒙特卡罗法
光线跟踪
碟式太阳能集热器
热流密度
散射误差
数值模拟
Monte Carlo method, ray-tracing, dish solar energy collector, heat flux, scattering error, numerical simulation
