Performance analysis of thermoelectric generator system in different aspect ratio collector channels

Zuo, Qingsong; Xie, Yongchuan; Chen, Wei; Zhu, Xinning; Tang, Yuanyou; Xie, Yong; Zhang, Hehui; Ma, Ying

doi:10.1016/j.applthermaleng.2023.120330

Cited by 3 publications

(2 citation statements)

References 56 publications

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“…In the current context of environmental pollution and energy shortages, the research and application of w-TEGs is of great significance [45][46][47][48][49]. This study aims to improve the power generation performance of thermoelectric devices in a wearable scenario.…”

Section: Introductionmentioning

confidence: 99%

High-Performance Wearable Bi2Te3-Based Thermoelectric Generator

et al. 2023

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Wearable thermoelectric generators (w-TEGs) convert thermal energy into electrical energy to realize self-powering of intelligent electronic devices, thus reducing the burden of battery replacement and charging, and improving the usage time and efficiency of electronic devices. Through finite element simulation, this study successfully designed high-performance thermoelectric generator and made it into wearable thermoelectric module by adopting “rigid device—flexible connection” method. It was found that higher convective heat transfer coefficient (h) on cold-end leads to larger effective temperature difference (ΔTeff) and better power generation performance of device in typical wearable scenario. Meanwhile, at same h on the cold-end, longer TE leg length leads to larger ΔTeff established at both ends of device, larger device output power (Pout) and open-circuit voltage (Uoc). However, when the h increases to a certain level, optimization effect of increasing TE leg length on device power generation performance will gradually diminish. For devices with fixed temperature difference between two ends, longer TE leg length leads to higher resistance of TEGs, resulting in lower device Pout but slight increase in Uoc. Finally, sixteen 16 × 4 × 2 mm2 TEGs (L = 1.38 mm, W = 0.6 mm) and two modules were fabricated and tested. At hot end temperature Th = 33 °C and cold end temperature Tc = 30 °C, the actual maximum Pout of the TEG was about 0.2 mW, and the actual maximum Pout of the TEG module was about 1.602 mW, which is highly consistent with the simulated value. This work brings great convenience to research and development of wearable thermoelectric modules and provides new, environmentally friendly and efficient power solution for wearable devices.

show abstract

Section: Introductionmentioning

confidence: 99%

High-Performance Wearable Bi2Te3-Based Thermoelectric Generator

et al. 2023

View full text Add to dashboard Cite

show abstract

“…In the current context of environmental pollution and energy shortage, the research and application of w-TEGs is of great significance [45][46][47][48][49]. This study aims to improve the power generation performance of thermoelectric devices in the wearable scenario.…”

Section: Introductionmentioning

confidence: 99%

High-Performance Wearable Bi2Te3-Based Thermoelectric Generator

Xing¹,

Tang²,

Wang³

et al. 2023

Preprint

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Wearable thermoelectric generators (w-TEGs) convert thermal energy into electrical energy to realize self-powering of intelligent electronic devices, thus reducing the burden of battery replacement and charging, and improving the usage time and efficiency of electronic devices. Through finite element simulation, this study successfully designed high-performance thermoelectric generator and made it into wearable thermoelectric module by adopting “rigid device - flexible connection” method. It was found that higher convective heat transfer coefficient on cold-end leads to larger effective temperature difference and better power generation performance of device in typical wearable scenario. Meanwhile, at same convective heat transfer coefficient on the cold-end, longer TE leg length leads to larger temperature difference established at both ends of device, larger device output power and open-circuit voltage. However, when the convective heat transfer coefficient increases to a certain level, optimization effect of increasing TE leg length on device power generation performance will gradually diminish. For devices with fixed temperature difference between two ends, longer TE leg length leads to higher resistance of TEG, resulting in lower device output power but slight increase in open-circuit voltage. Finally, sixteen 16×4×2 mm2 TEGs (L=1.38 mm, W=0.6 mm) and two modules were fabricated and tested. At hot end temperature Th=33 ℃ and cold end temperature Tc=30 ℃, the actual maximum output power Pout of TEG is about 0.2 mW, and the actual maximum output power Pout of TEG module is about 1.602 mW, which is highly consistent with the simulated value. This work brings great convenience to research and development of wearable thermoelectric modules and provides new, environmentally friendly and efficient power solution for wearable devices.

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Energy and exergy analysis of phase change material based thermoelectric generator with pulsed heat sources

Hong

Cai

et al. 2023

Applied Thermal Engineering

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Performance analysis of thermoelectric generator system in different aspect ratio collector channels

Cited by 3 publications

References 56 publications

High-Performance Wearable Bi2Te3-Based Thermoelectric Generator

High-Performance Wearable Bi2Te3-Based Thermoelectric Generator

High-Performance Wearable Bi2Te3-Based Thermoelectric Generator

Energy and exergy analysis of phase change material based thermoelectric generator with pulsed heat sources

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