近场热离子和热光伏能量转换器及其混合系统研究进展  

Progress in the Research of Thermionic and Thermophotovoltaic Converters and the Hybrid Systems in the Near-Field

作　　者：李林 吴小虎 于坤[1,2] LI Lin;WU Xiaohu;YU Kun(School of Physics,Henan Normal University,Xinxiang Henan 453007;Henan Key Laboratory of Infrared Materials&Spectrum Measures and Applications,Xinxiang Henan 453007;Shandong Institute of Advanced Technology,Jinan Shandong 250100)

机构地区：[1]河南师范大学物理学院,河南新乡453007 [2]河南省红外材料与光谱测量及应用重点实验室,河南新乡453007 [3]山东高等技术研究院,山东济南250100

出　　处：《东北电力大学学报》2024年第5期1-14,共14页Journal of Northeast Electric Power University

基　　金：国家自然科学基金(52106099);山东省自然科学基金优秀青年基金(ZR2022YQ57)。

摘　　要：热离子转换器和热光伏转换器是两种主要的固态热电转换器,它们可以在极端温度下工作,具有潜在的高效率,并且兼容超高温热能存储。两者都依赖高度非等温间隙基本能量载流子的转移,热离子转换器中为电子,热光伏转换器中为光子。由于受到斯特藩玻尔兹曼定律、空间电荷效应等的限制,两种转换器的性能无法进一步提升。当发射极与吸收极之间的距离与热辐射特征波长相当或更小时,由于倏逝波产生的光子隧穿效应以及空间电荷效应的消除,两种转换器的性能出现显著增强。因此,在余热回收和可再生能源利用等领域具有重要意义。文中综述了国内外学者在两种固态热电转换器及其混合系统方面的研究进展,总结并分析了未来可能的发展方向和主要挑战。Thermoionic converters and thermophotovoltaic converters are two primary solid-state thermoelectric converters capable of operating at extreme temperatures with the potential for high efficiency,making them suitable for ultra-high temperature thermal energy storage applications.Both rely on the transfer of fundamental energy carriers through highly non-isothermal junctions:electrons in thermoionic converters and photons in thermophotovoltaic converters.However,the performance of both converters is constrained by factors such as the Stefan-Boltzmann law and space charge effects,preventing further enhancement.Nevertheless,when the distance between the emitter and absorber is comparable to or less than the thermal radiation characteristic wavelength,the performance of both converters can be significantly enhanced due to the photon tunneling effect generated by evanescent waves and the mitigation of space charge effects.Therefore,it holds significant importance in fields such as waste heat recovery and renewable energy utilization.This paper reviews the research progress of domestic and foreign scholars in the two types of solid-state thermoelectric converters and their hybrid systems,summarizes and analyzes potential future directions and key challenges.

关 键 词：热离子转换器 热光伏转换器 混合系统 近场效应 

分 类 号：TM914[电气工程—电力电子与电力传动]