摘要
在已提出的等光强带聚焦菲涅耳透镜的基础上,对其建立光学模型,利用蒙特卡罗光线追迹法(MCRT)对透镜的聚光性能进行模拟,并与传统的线聚焦菲涅耳透镜进行对比,结果表明在相同条件下等光强带聚焦菲涅耳透镜的聚光均匀性和光学效率均优于线聚焦透镜。对带聚焦菲涅耳透镜的各特性参数的分析结果表明,较高的焦距可提高带聚焦菲涅耳透镜的光学效率和聚光倍数。最后分析了南北向跟踪误差对该聚光系统影响。
On the basis of the previously proposed principle of strip-focus Fresnel lens, an optical model was developed. The optical concentrating properties of linear Fresnel lens and strip-focus Fresnel lens were simulated by the means of Monte Carlo Ray Tracing Method （ MCRT）, and the results showed that the strip-focus Fresnel lens have a higher uniformity and efficiency than the linear Fresnel lens under the same conditions. Relationships of several characteristic parameters of the strip-focus Fresnel lens were analyzed and the results indicated that a larger focus length can improve the optical efficiency and concentration ratio of the strip-focus Fresnel lens. The effect of the North-South tracking error on the system performance was also analyzed.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2013年第11期1877-1881,共5页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(50736005)
国家重点基础研究发展(863)计划(2010CB227305)
关键词
太阳能
菲涅耳透镜
带聚焦
光学分析
均匀度
solar energy
Fresnel lens
strip-focus
optical analysis
uniformity
