新型林区土壤温差发电装置性能研究及其仿真  

Performance research and simulation of a new type of forest soil thermoelectric power device

作　　者：陈欣瑶 张兴丽[1] 陈宏远 孙壮志 刘博文 靳炜钰 CHEN Xinyao;ZHANG Xingli;CHEN Hongyuan;SUN Zhuangzhi;LIU Bowen;JIN Weiyu(College of Mechanical and Electrical Engineering,Northeast Forestry University,Harbin 150040,China)

机构地区：[1]东北林业大学机电工程学院,哈尔滨150040

出　　处：《黑龙江大学工程学报(中英俄文)》2024年第3期63-70,共8页Journal of Engineering of Heilongjiang University

基　　金：国家自然科学基金项目(52175266,51905085)

摘　　要：随着林区无线物联网技术的快速发展,林区特殊环境影响下的供电需求迫在眉睫。基于Seebeck效应设计了一种新型的林区温差发电装置,通过实验和有限元分析相结合的方法,研究了新型林区温差发电装置在不同温差下的发电性能。研究结果表明:在室外温差为13℃时,室外温差发电装置产生的最大瞬时电压为2.5mV。对温差发电装置上的温差发电片进行有限元仿真研究,当温差发电片两端温差达到2℃时,一个温差发电片两端产生0.172 mV的电压。分析仿真模拟图显示温差发电片内部温差分布均匀;温差发电片产生的电势在边缘处相差最大。将数值模拟计算结果与实验结果进行比较,两者结论一致。With the rapid advancement of wireless internet of things technology in forest areas,there is an imminent demand for power supply due to the unique environmental conditions.A novel forest thermoelectric power device is designed based on the Seebeck effect.By combining experimental and finite element analysis approaches,the power generation performance of this new device under varying temperature differences is investigated.The results demonstrate that at an outdoor temperature difference of 13℃,the maximum instantaneous voltage generated by the outdoor thermoelectric power device reaches 2.5 mV.The finite element simulation of the thermoelectric plate on the thermoelectric power device is carried out.When the temperature difference between the two ends of the thermoelectric plate reaches 2℃,a voltage of 0.172 mV is generated at both ends of one thermoelectric plate.By analyzing the simulation diagram,it can be seen that the temperature difference inside the thermoelectric plate is evenly distributed;The potential generated by the thermoelectric plate varies most at the edge.The results of numerical simulation are compared with those of experiment,the two conclusions are consistent.

关 键 词：SEEBECK效应 土壤温差 森林监测 热电转化 

分 类 号：TK11[动力工程及工程热物理—热能工程]