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Thermodynamic bounds of work and efficiency in near-field thermoradiative systems

机译：近场热电流系统中的工作和效率的热力学界限

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摘要

Thermoradiative (TR) device combined with near-field radiation has been recently proposed to enhance noncontact direct photoelectric energy conversion. Based on the fluctuation-dissipation theorem, we evaluate the maximum work flux and the fundamental efficiency limit of the near-field TR systems by analyzing the radiative heat flux and the entropy flux. For a near-field TR system, when the ZrC absorber is placed close to the TR cell with a vacuum gap down to 100 nm, photon tunneling through evanescent waves can significantly enhance the maximum work flux without a compromise in efficiency limit. Furthermore, the decrease in the temperature of the heat source would greatly weaken the performance of the TR system. We also would like to emphasize that the hyperbolic metamaterial (HMM) and Lorentz absorbers can remarkably improve the performance of the TR system as compared to the ZrC reference. In this paper, based on the proposed method for determining the thermodynamic bounds of work and efficiency, we establish a target for the performance of the near-field TR system. In addition, the fundamental understandings and insights obtained in this study will facilitate the design and application of the near-field TR system.
机译：最近已经提出了热进相（TR）装置与近场辐射结合，以增强非接触的直接光电能量转换。基于波动耗散定理，我们通过分析辐射热通量和熵通量来评估近场TR系统的最大工作通量和基本效率极限。对于近场TR系统，当ZRC吸收器靠近TRE细胞的真空间隙靠近到100nm靠近TR电池时，通过渐逝波的光子隧道可以显着提高最大工作通量而不会在效率极限中折衷。此外，热源温度的降低将大大削弱TR系统的性能。我们还要强调，与ZRC参考相比，双曲线超材料（HMM）和Lorentz吸收器可以显着提高TR系统的性能。本文基于确定工作和效率的热力学界限的提出方法，我们建立了近场TR系统性能的目标。此外，本研究中获得的基本谅解和见解将促进近场TR系统的设计和应用。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2021年第12期|121807.1-121807.10|共10页
  • 作者

    Bowen Li; Qiang Cheng; Jinlin Song; Kun Zhou; Lu Lu; Zixue Luo; Xusheng Zhuo;

  • 作者单位

    State Key Laboratory of Coal Combustion Huazhong University of Science and Technology Wuhan 430074 Hubei China;

    State Key Laboratory of Coal Combustion Huazhong University of Science and Technology Wuhan 430074 Hubei China;

    School of Electrical and Information Engineering. Wuhan Institute of Technology Wuhan 430205 Hubei China;

    State Key Laboratory of Coal Combustion Huazhong University of Science and Technology Wuhan 430074 Hubei China;

    State Key Laboratory of Coal Combustion Huazhong University of Science and Technology Wuhan 430074 Hubei China;

    State Key Laboratory of Coal Combustion Huazhong University of Science and Technology Wuhan 430074 Hubei China;

    School of Electrical and Information Engineering. Wuhan Institute of Technology Wuhan 430205 Hubei China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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