设计一种小规模的光线向下式焦点固定的多碟聚光集热系统,其特点是焦点固定,光线向下汇聚,吸热器开口向上,并提出该系统的追踪方式。通过对一次镜场和二次反射镜的分析和优化设计,使设计工况下吸热器入口的平均能流密度达到420 kW/m2,光学效率为87.4%,可为实现光线向下式焦点固定聚光系统的发展和优化提供技术方案。
Abstract
A small-scale beam-down solar concentrator with multi-disc is designed. At the same time, the tracking method of the system is proposed in this study. The system has the characteristics that the concentrated sunlight is delivered to the ground and the receiver entrance is arranged upwards. Through the analysis and optimization design of the performance of the primary mirror field and the secondary mirror, the average energy flow density of the receiver can reach 420 kW/m2 with the optical efficiency of 87.4% under the design conditions, which provides a technical solution for the development and optimization of the beam-down focus fixed concentrator system.
关键词
太阳能聚光热器 /
定日镜 /
光学系统 /
二次反射 /
性能分析
Key words
solar concentrator /
heliostats /
optical system /
secondary reflection /
performance analysis
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基金
国家自然科学基金重大项目（52090060）
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