面向倾斜接收面的高通量聚光太阳炉优化研究

发电技术

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面向倾斜接收面的高通量聚光太阳炉优化研究

孙思^1,2,3,4，徐立^1,2,3,4*，孙飞虎^1,2,3,4，李钧^1,2,3,4，陈兆如^1,5

1．中国科学院电工研究所，北京市海淀区 100190；2. 中国科学院大学，北京市海淀区 100190；3. 中国科学院太阳能热利用及光伏系统重点实验室，北京市海淀区 100190；4. 北京市太阳能热发电工程技术研究中心，北京市海淀区 100190；5. 沈阳化工大学化学工程学院，辽宁省沈阳市 110142）

基金资助:
国家重点研发计划项目(2021YFF0500404)

Research on Optimization of High-Flux Solar Furnace With Tilted Receiving Surface

SUN ^Si1,2,3,4, XU Li^1,2,3,4*, SUN Feihu^1,2,3,4, LI Jun^1,2,3,4, CHEN Zhaoru^1,5

1.Institute of Electrical Engineering, Chinese Academy of Sciences, Haidian District, Beijing 100190, China; 2. University of Chinese Academy of Sciences, Haidian District, Beijing 100190, China; 3. Key Laboratory of Solar Thermal Energy and Photovoltaic System, Chinese Academy of Sciences, Haidian District, Beijing 100190, China; 4. Beijing Engineering Research Center of Solar Thermal Power, Haidian District, Beijing 100190, China; 5. College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, Liaoning Province, China

Supported by:
National Key R&D Program of China (2021YFF0500404)

摘要/Abstract

摘要： 【目的】近年来，热化学与太阳能聚光技术结合，开发出光热技术的新型应用领域，然而现阶段热化学反应器与太阳炉等聚光装置耦合不足，为此，需要对热化学反应器接收面能流密度开展研究，提出一种针对接收面的聚光器优化设计方法。【方法】以面向倾斜接收面的太阳炉作为研究对象，采用光线追迹法建立数值仿真模型，探究反应器接收面的设计变动对靶面能流密度分布的影响；分析靶面光线入射角对太阳炉聚光镜聚光贡献的影响，并将其作为约束量对太阳炉聚光镜设计进行优化，分析聚光器优化效果。【结果】聚光器边缘区域对光斑造成明显形变，且能流密度贡献显著下降；通过约束汇聚光线对靶面的入射角，能够在相同的镜面面积下使光斑能流密度峰值提升18.52%，靶面功率提升6.53%。【结论】研究结果为热化学反应器接收面设计提供了能流密度分布影响规律，并提供了一种针对反应器接收面优化聚光器设计的方法，对太阳能热化学系统的耦合匹配具有重要意义。

关键词: 热化学, 太阳能, 储能, 光热, 太阳炉, 数值模拟, 聚光器, 能流密度分布

Abstract: [Objectives] In recent years, the integration of thermochemistry and concentrating solar power technologies has led to novel applications for solar thermal technologies. However, the coupling between thermochemical reactors and solar concentrators such as solar furnaces remains insufficient. Therefore, it is necessary to study the energy flux density on the receiving surface of thermochemical reactors and propose an optimized design method for concentrators specifically for receiving surface. [Methods] Taking a solar furnace with tilted receiving surface as the research object, a numerical simulation model using the ray-tracing method is established to explore how design variations of receiving surface of reactors affect the energy flux density distribution at the target surface. The effect of ray incident angles at the target surface on the concentrating contribution of solar furnace concentrators is analyzed and used as a constraint to optimize the design of concentrators. Additionally, the performance of optimized concentrators is analyzed. [Results] The edge region of the concentrator causes significant distortion of the focal spot and a notable decrease in energy flux density contribution. By constraining the incident angle of concentrated rays at the target surface, the peak energy flux density of the focal spot can be increased by 18.52% and the power at the target surface improved by 6.53%, while maintaining the same mirror area [Conclusions] This study provides the influencing pattern of energy flux density distribution for the design of thermochemical reactor receiving surface and proposes a method for optimizing concentrator design tailored to reactor receiving surface. The findings contribute significantly to the coupling and matching of solar thermochemical systems.

Key words: thermochemistry, solar energy, energy storage, solar thermal, solar furnace, numerical simulation, concentrator, energy flux density distribution

孙思, 徐立, 孙飞虎, 李钧, 陈兆如. 面向倾斜接收面的高通量聚光太阳炉优化研究[J]. 发电技术.

SUN , XU Li, SUN Feihu, LI Jun, CHEN Zhaoru. Research on Optimization of High-Flux Solar Furnace With Tilted Receiving Surface[J]. Power Generation Technology.

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