直漏斗二次聚光对单光谱氙灯-热光伏系统性能的影响分析  

Effect of Secondary Concentrator with Straight Funnel on Performance of Single-Spectrum Xenon Lamp-Thermophotovoltaic System

作　　者：柳秀丽 陈学[1] 孙创[1] 夏新林[1] Liu Xiuli;Chen Xue;Sun Chuang;Xia Xinlin(School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,Heilongjiang,China)

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《光学学报》2022年第15期37-43,共7页Acta Optica Sinica

基　　金：国家自然科学基金(51806046);黑龙江省博士后资助(LBH-Z18081)。

摘　　要：设计了一种热光伏电池单光谱辐射能-电能转换特性的测试系统。通过带通型滤波片和直漏斗二次聚光器实现了氙灯与电池间单光谱、能流密度可调的定向辐射传输。基于蒙特卡罗射线追迹法,构建了氙灯-热光伏测试系统的光谱辐射传输模型,分析了电池表面辐射能流的分布特征,讨论了二次聚光器开口尺寸和高度的影响规律,并从理论上计算了GaSb电池在单光谱、高能流辐射下的电流-电压曲线、输出功率和热电转换效率。结果表明,直漏斗二次聚光器的引入有效提高了热光伏电池的热电转换性能,电池表面辐射能量提高了105.3%,且均匀度高达95%,电池的输出功率提高了109.1%。A test system is designed for evaluating the characteristics of single-spectrum radiant energy-electricity energy conversion of thermophotovoltaic cells. A band-pass filter and a secondary concentrator with a straight funnel are used to achieve single-spectrum and directional radiation transmission between the xenon lamp and the thermophotovoltaic cells with adjustable energy flux density. Based on Monte-Carlo ray tracing method, the spectral radiation transmission model of the xenon lamp-thermophotovoltaic test system is constructed. The distribution characteristics of radiant energy flux on the cell surface are analyzed, and the effects of opening size and height of the secondary concentrator are discussed.Meanwhile, the current-voltage curve, output power, and thermoelectric conversion efficiency of GaSb cell under singlespectrum and high energy flux radiation are theoretically calculated. The results show that the introduction of a secondary concentrator can effectively improve the thermoelectric conversion performance of the thermophotovoltaic cells. The radiant energy on the cell surface increases by 105. 3%, with the uniformity reaching 95%, and the output power of the cell increases by 109. 1%.

关 键 词：几何光学 热光伏系统 二次聚光器 热电转换 蒙特卡罗法 

分 类 号：O435[机械工程—光学工程]