具有二次聚光器的新型大开口槽式太阳集热器设计与光学性能分析

doi:10.19912/j.0254-0096.tynxb.2021-0055

太阳能学报 ›› 2022, Vol. 43 ›› Issue (8): 245-252.DOI: 10.19912/j.0254-0096.tynxb.2021-0055

具有二次聚光器的新型大开口槽式太阳集热器设计与光学性能分析

姚磐^1~3, 雷东强^1~3, 张馨^1~3, 张博⁴, 王志峰^1~3

1.中国科学院太阳能热利用及光伏系统重点实验室,北京 100190;
2.中国科学院电工研究所,北京 100190;
3.中国科学院大学,北京 100049;
4.中北大学电气与控制工程学院,太原 038507

收稿日期:2021-01-13 出版日期:2022-08-28 发布日期:2023-02-28
通讯作者: 雷东强（1980—）,男,博士、副研究员,主要从事槽式太阳能热发电技术方面的研究。ldqljmei@126.com
基金资助:
国家重点研发计划（2019YFE0102000）; 国家自然科学基金（51476165）

DESIGN AND OPTICAL PERFORMANCE ANALYSIS OF NOVEL LARGE APERTURE PARABOLIC TROUGH SOLAR COLLECTOR WITH SECONDARY CONCENTRATOR

Yao Pan^1-3, Lei Dongqiang^1-3, Zhang Xin^1-3, Zhang Bo⁴, Wang Zhifeng^1-3

1. Key Laboratory of Solar Thermal Energy and Photovoltaic System, Chinese Academy of Sciences, Beijing 100190, China;
2. Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China;
3. University of Chinese Academy of Sciences, Beijing 100049, China;
4. School of Electrical and Control Engineering, North University of China, Taiyuan 038507, China

Received:2021-01-13 Online:2022-08-28 Published:2023-02-28

摘要/Abstract

摘要： 针对大开口和更高运行温度的槽式太阳能热发电系统,提出一种可实现高聚光比、低辐射热损及能流密度均匀的新型槽式太阳集热器,即在集热管内放置外壁具有太阳选择吸收膜层和内壁具有反射膜层二次聚光器的大开口槽式太阳集热器。建立圆弧为微元段的自适应设计新方法,提出3种典型的二次聚光器面型,利用蒙特卡洛光线追迹方法仿真新型集热器的能流密度分布特性,验证该光学仿真方法,分析影响集热器光学性能的各种因素。结果表明,该集热器可显著提升集热效率。

关键词: 槽式太阳集热器, 二次聚光器, 光学性能, 能流

Abstract: For the large aperture and higher operating temperature of the parabolic trough solar power generation system, this paper presents a novel parabolic trough collector, which could gain higher concentrating ratio, lower heat loss and better uniformity of energy flux density. Inside the receiver, a secondary concentrator is placed with a solar selective coating on the outer surface and a reflective coating on the inner surface. With arc as the element segment, three surface types of secondary concentrator were proposed by using a novel adaptive design method. After verified the optical simulation method, the energy flux density distribution of the novel collector were simulated by using Monte Carlo ray tracing method. Various factors' effects on the optical performance of the secondary concentrator were analyzed. It is concluded that the novel collector improves the collector efficiency.

Key words: parabolic trough solar collector, secondary concentrator, optical performance, energy flux

中图分类号:

TK513

姚磐, 雷东强, 张馨, 张博, 王志峰. 具有二次聚光器的新型大开口槽式太阳集热器设计与光学性能分析[J]. 太阳能学报, 2022, 43(8): 245-252.

Yao Pan, Lei Dongqiang, Zhang Xin, Zhang Bo, Wang Zhifeng. DESIGN AND OPTICAL PERFORMANCE ANALYSIS OF NOVEL LARGE APERTURE PARABOLIC TROUGH SOLAR COLLECTOR WITH SECONDARY CONCENTRATOR[J]. Acta Energiae Solaris Sinica, 2022, 43(8): 245-252.

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具有二次聚光器的新型大开口槽式太阳集热器设计与光学性能分析

DESIGN AND OPTICAL PERFORMANCE ANALYSIS OF NOVEL LARGE APERTURE PARABOLIC TROUGH SOLAR COLLECTOR WITH SECONDARY CONCENTRATOR

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