华南理工大学学报(自然科学版) ›› 2011, Vol. 39 ›› Issue (3): 47-51.doi: 10.3969/j.issn.1000-565X.2011.03.010

• 化学化工 • 上一篇    下一篇

内置式强化热电直接转换系统的建模与数值分析

张征 谢小鹏 巫江虹   

  1. 华南理工大学 机械与汽车工程学院,广东 广州 510640
  • 收稿日期:2010-08-09 修回日期:2010-11-17 出版日期:2011-03-25 发布日期:2011-02-01
  • 通信作者: 张征(1954-),男,博士,副教授,主要从事车辆节能与热电转换、机电工程自动化研究 E-mail:mezzhang@scut.edu.cn
  • 作者简介:张征(1954-),男,博士,副教授,主要从事车辆节能与热电转换、机电工程自动化研究
  • 基金资助:

    广东省高新技术产业化项目(2009B010900019)

Modeling and Numerical Analysis of Internal Enhanced Direct Thermoelectric Conversion System

Zhang Zheng  Xie Xiao-peng  Wu Jiang-hong   

  1. School of Mechanical and Automotive Englneering,South China University of TechnologY,Guangzhou 510640,Guangdong,China
  • Received:2010-08-09 Revised:2010-11-17 Online:2011-03-25 Published:2011-02-01
  • Contact: 张征(1954-),男,博士,副教授,主要从事车辆节能与热电转换、机电工程自动化研究 E-mail:mezzhang@scut.edu.cn
  • About author:张征(1954-),男,博士,副教授,主要从事车辆节能与热电转换、机电工程自动化研究
  • Supported by:

    广东省高新技术产业化项目(2009B010900019)

摘要: 建立了适用于工程分析的热电直接转换系统模型,给出了内置式强化温差发电器的结构和数学描述,对发电器通道内的对流换热和阻力特性进行了数值计算,得出了对流换热系数、温度和压力的变化趋势,并与外置式温差发电器的换热特性进行了比较.数值分析表明:内置转换元件可以有效地增大换热面积和对流换热系数,改变元件的截面形状可以得到较低的流通阻力和压降,使温差发电器的热电转换性能得以强化.

关键词: 强化, 热电转换系统, 建模, 数值分析

Abstract:

In this paper,a system model of direct thermoelectric conversion applicable to project analysis is established,and the structure and mathematical description of the internal enhanced thermoelectric generator are presented.Moreover,the variation trends of convective heat transfer coefficient,temperature and pressure in the generator channel are obtained through the numerical calculation of convection heat transfer and resistance characteristics.The results are finally compared with those of the external thermoelectric generator.Numerical analyses show that the components set in the channel effectively improve the heat transfer area and convection heat transfer coefficient,and that the shape change of the channel cross section may result in lower flow resistance and pressure drop,thus enhancing the thermoelectric conversion properties.

Key words: Intensified, thermoelectric system, modeling, numerical analysis