Cylindrical near-field solar thermophotovoltaic system with multilayer absorber/emitter structures: Integrated solar radiation absorption and cooling energy consumption

IF 9.9 1区工程技术 Q1 ENERGY & FUELS

Energy Conversion and Management Pub Date : 2024-11-22 DOI:10.1016/j.enconman.2024.119299

Kunpeng Yuan, Binghong Chen, Shiquan Shan, Jun Shu, Qiguo Yang

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Abstract

Near-field radiative heat transfer enhances the intensity of the thermal radiation significantly through evanescent waves, while the combination of selective emitters can effectively improve the output power and system efficiency of solar thermophotovoltaic systems. By calculating the polariton dispersion relation between different layers and combining the energy transmission coefficient of the emitter at different layers, the mechanism by which the emitter enhances near-field radiative heat transfer was analyzed. Concurrently, a comprehensive consideration was given to the conversion of solar radiation to thermal energy, the transformation of thermal radiation into electrical energy, and the impact of the circulating water-cooling system on performance. The analysis indicates that with concentration ratio of > 70 and operating temperatures ranging from 900 K to 1200 K, the output power of near-field solar thermophotovoltaic system can achieve a range of 8905 W/m2 to 52875 W/m2, and the system efficiency can be stably maintained above 20 %.

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采用多层吸收器/发射器结构的圆柱形近场太阳能光热发电系统：综合吸收太阳辐射和冷却能耗

近场辐射传热通过蒸发波显著增强了热辐射强度，而选择性发射器的组合则能有效提高太阳能热光电系统的输出功率和系统效率。通过计算不同层间的极化子色散关系，并结合发射器在不同层的能量传输系数，分析了发射器增强近场辐射传热的机理。同时，综合考虑了太阳辐射向热能的转化、热辐射向电能的转化以及循环水冷却系统对性能的影响。分析表明，在浓度比为 70、工作温度为 900 K 至 1200 K 的条件下，近场太阳能光热发电系统的输出功率可达 8905 W/m2 至 52875 W/m2，系统效率可稳定保持在 20% 以上。

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来源期刊

Energy Conversion and Management 工程技术-力学

CiteScore

19.00

自引率

11.50%

发文量

1304

审稿时长

17 days

期刊介绍： The journal Energy Conversion and Management provides a forum for publishing original contributions and comprehensive technical review articles of interdisciplinary and original research on all important energy topics. The topics considered include energy generation, utilization, conversion, storage, transmission, conservation, management and sustainability. These topics typically involve various types of energy such as mechanical, thermal, nuclear, chemical, electromagnetic, magnetic and electric. These energy types cover all known energy resources, including renewable resources (e.g., solar, bio, hydro, wind, geothermal and ocean energy), fossil fuels and nuclear resources.