4.7 Article

Numerical investigation of an exhaust thermoelectric generator with a perforated plate

期刊

ENERGY
卷 263, 期 -, 页码 -

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2022.125776

关键词

Thermoelectric generator; Perforated plate; Net output power; Optimal installation position

向作者/读者索取更多资源

This study investigates the effect of inserting a perforated plate on the performance of an exhaust thermoelectric generator through the construction of a mathematical model. The findings show that the insertion of the perforated plate increases the output power of the generator and an optimal installation position exists. Furthermore, the position of the perforated plate affects the voltage evenness of the modules, with the most uniform voltage distribution observed when the plate is in the middle of the third row of modules.
The thermoelectric conversion efficiency of an exhaust thermoelectric generator is relatively limited and can be increased by optimizing the structure of the exhaust heat exchanger to improve the heat transfer performance. In this study, a mathematical model, based on a fluid-thermal-electric multi-physical field, of an exhaust thermo-electric generator with four rows of thermoelectric modules is constructed to investigate the effect of inserting a perforated plate on the performance of the generator. The insertion of the perforated plate increases the output power of the generator, and an optimal installation position exists that increases the output power by 73.4%. In addition, as the perforated plate is gradually repositioned toward the outlet of the exhaust heat exchanger, the voltage evenness coefficient of the module increases to a maximum of 0.967 and then decreases, with the voltage distribution being the most uniform when the perforated plate is in the middle of the third row of modules. The variation in the mass flow rate and temperature does not affect the optimal installation location, which indicates that the generator has the flexibility to overcome exhaust gas fluctuations. The findings provide guidelines for the structural optimization of thermoelectric generators.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据