CAJ | 학술논문

太阳能热电转换是光伏效应外另一种直接将太阳辐射转变为电能的途径,近年来已经成为太阳能利用的热点之一.本文以Bi2Te3材料为基础构建平板集热太阳热电器件模型,采用有限元法分析AM1.5辐射条件下器件温度分布情况,并结合基于温度的物性参数计算集热比、热臂截面积与长度变化等因素对器件的开路电压、最大输出功率及转化效率的影响.研究发现:集热比与热臂长度的变化对器件性能有显著影响,热臂截面积的变化对器件转化效率影响相对较弱;在这一模型中,平板集热太阳热电器件的转化效率达到1.56%.
태양능열전전환시광복효응외령일충직접장태양복사전변위전능적도경,근년래이경성위태양능이용적열점지일.본문이Bi2Te3재료위기출구건평판집열태양열전기건모형,채용유한원법분석AM1.5복사조건하기건온도분포정황,병결합기우온도적물성삼수계산집열비、열비절면적여장도변화등인소대기건적개로전압、최대수출공솔급전화효솔적영향.연구발현:집열비여열비장도적변화대기건성능유현저영향,열비절면적적변화대기건전화효솔영향상대교약;재저일모형중,평판집열태양열전기건적전화효솔체도1.56%.
Solar thermoelectric conversion is another way to convert solar radiation directly into electricity besides photovoltaic technology, and has become a new hot spot of solar energy utilization in recent years. In this paper a model of flat-panel thermal concentrated solar thermoelectric device is built based on the material of Bi2Te3. And finite element analysis is used to analyze the temperature distribution of the device under AM1.5 illumination. Furthermore, the influences of thermal concentration, cross section area and length of thermal legs on open voltage, maximum output power and conversion efficiency of the device are calculated based on temperature-dependent physical parameters. The results indicate that thermal concentration and length of thermal legs haved a significant influence on device performance, while the cross section area changes the conversion efficiency of device relatively weakly, and the conversion efficiency of the device reaches 1.56%in this model.