材料科学
热电发电机
自然对流
热电材料
热电效应
功率密度
传热
机械工程
数码产品
热导率
热传导
有限元法
复合材料
刚度(电磁)
光电子学
电气工程
功率(物理)
机械
工程类
结构工程
热力学
物理
作者
Linli Zhang,Xue Han,Minzhi Du,Yulong Shi,Kun Zhang
标识
DOI:10.1016/j.coco.2021.100793
摘要
Due to the mutual conversion of heat and electricity, thermoelectric devices (TEDs) have an outstanding display in the field of wearable electronics and human body temperature regulation. However, their rigidity affects their wearing comfort. In this paper, combined with finite element analysis (FEA), we present a flexible TED, which uses porous PDMS with low thermal conductivity to replace organic elastomer to fill thermoelectric (TE) pillars connected with liquid metal. Our design provides a method to reduce the heat transfer through TEDs. The optimal power density of 2.33 μW cm-2 can be obtained under the natural convection. And with an applied ΔT of 8.8 K, a power density of 27.02 μW cm-2 can be achieved. Moreover, at applied current of 1.0 A, the cooling effect of the flexible TED can reach up to 7 K under natural convection and 2.8 K on human wrist under 1-sun (1 kW m-2) irradiation.
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