非均匀光照下太阳能热电发电系统实验研究  

Experimental Study of Solar Thermoelectric System Under Non-uniform Illumination

作　　者：龙英平 殷二帅 李强[1] 杨树 LONG Yingping;YIN Ershuai;LI Qiang;YANG Shu(MIIT Key Laboratory of Thermal Control of Electronic Equipment,School of Energy and Power Engineering,Nanjing University of Science&Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学能源与动力工程学院,电子设备热控制工信部重点实验室,南京210094

出　　处：《工程热物理学报》2025年第2期534-538,共5页Journal of Engineering Thermophysics

基　　金：中央高校基本科研业务费专项资金资助(No.30923010917);国家自然科学基金资助项目(No.52006102);江苏省自然科学基金资助项目(No.BK20200489)。

摘　　要：由高倍聚光引起的非均匀光照对太阳能热电系统性能有着较大的影响,但相关研究仅停留在理论阶段。本文建立了聚光太阳能热电系统的实验装置,测试了不同光照均匀度下太阳能热电系统的性能,研究了辐照均匀度、器件结构和冷却方式对非均匀辐照运行的系统性能的影响。研究发现:随着辐照均匀度的增大,系统性能先增大后减小,系统在辐照均匀度为41.5%时获得了最高1.503%的发电效率,与辐照均匀度为92.4%时的系统相比,效率提升了3.6%。热电结构和冷却方式不会改变辐照均匀度对太阳能热电系统的影响。当采用水冷冷却时,与风冷相比,在相同辐照均匀度条件下,热电器件温差可增长10℃,太阳能热电系统发电效率提升约0.1%。The non-uniform illumination caused by high concentration has a great influence on the performance of solar thermoelectric system,but the related research only stays in the theoretical stage.In this paper,an experimental set of concentrated solar thermoelectric system is established to test the performance of the solar thermoelectric system under different illumination uniformity.The effects of irradiation uniformity,device structure and cooling mode on the performance of the system under non-uniform irradiation operation are studied.It is found that with the increase of irradiation uniformity,the system performance first increases and then decreases.The system obtains the highest power generation efficiency of 1.503%when the irradiation uniformity is 41.5%,which is 3.6%higher than that when the irradiation uniformity is 92.4%.The thermoelectric structure and cooling method do not change the influence of irradiation uniformity on the solar thermoelectric system.When water cooling is used,compared with air cooling,the thermoelectric device temperature difference can be increased by 10℃ under the same irradiation uniformity condition,and the power generation efficiency of the solar thermoelectric system is increased by about 0.1%.

关 键 词：太阳能热电系统 非均匀光照 辐照均匀度 发电效率 

分 类 号：TK51[动力工程及工程热物理—热能工程]