Comparison of Cooling Methods for a Thermoelectric Generator with Forced Convection

被引：19

作者：

Cho, Young Hoo ^{[1
]}

Park, Jaehyun ^{[2
]}

Chang, Naehyuck ^{[1
]}

Kim, Jaemin ^{[3
]}

机构：

[1] Korea Adv Inst Sci & Technol, Sch Elect Engn, 291 Daehak Ro, Daejeon 34141, South Korea

[2] Univ Ulsan, Sch Elect Engn, Ulsan 44610, South Korea

[3] Myongji Univ, Dept Elect Engn, Yongin 17058, South Korea

来源：

ENERGIES | 2020年 / 13卷 / 12期

基金：

新加坡国家研究基金会;

关键词：

system-level optimization; net power; thermoelectric generator; forced convection; computational fluid dynamics (CFD); WASTE HEAT-RECOVERY; POWER-GENERATION; PERFORMANCE; TEMPERATURE; MODEL; SIMULATION; EFFICIENCY; DESIGN; OUTPUT; SINK;

D O I：

10.3390/en13123185

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A thermoelectric generator (TEG) is a clean electricity generator from a heat source, usually waste heat. However, it is not as widely utilized as other electricity generators due to low conversion efficiency from heat to electricity. One approach is a system-level net power optimization for a TEG system composed of TEGs, heat sink, and fans. In this paper, we propose airflow reuse after cooling preceding TEGs to maximize system net power. For the accurate system net power, we model the TEG system, air, and heat source with proper dimension and material characteristics, and simulate with a computational fluid dynamics program. Next, the TEG power generation and the fan power consumption are calculated in consideration of the Seebeck coefficient and internal electrical resistance varying with hot and cold side temperatures. Finally, we find the optimal number of TEGs and fan speed generating the most efficient system net power in various TEG systems. The results show that the system with a side fan with a specific number of TEGs provides a system net power up to 58.6% higher than when with a top fan. The most efficient system net power with the side fan increases up to four TEGs generating 1.907 W at 13,000 RPM.

引用

页数：19

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