摘要
从稳态的热传导方程出发,对发电器件进行了热力学分析,建立了半导体温差发电器件的基本模型,推导出p型和n型半导体内部的温度分布函数及输出功率和发电效率的表达式,讨论了传统分析中经常忽略的汤姆逊热对发电性能的影响.结果表明,在低温及大温差工况下汤姆逊热对输出功率的影响不能忽略.
Based on the steady conduction equation,thermodynamic analysis is performed on generator components,a basic model of semiconductor thermoelectric generator is constituted.The temperature function,output power and generating efficiency of p and n semiconductors are obtained.The influence of Thomson heat,often ignored in traditional analysis process,is discussed at the same time.Results indicate that Thomson heat can’t be ignored in cases of low-temperature and great temperature differences.
基金
国家高技术研究发展计划(863计划)资助项目(AA515010).
关键词
半导体
温差发电
热力学
汤姆逊热
semiconductor
thermoelectric generation
thermodynamic
Thomson heat
