Computational Analysis of a Thermoelectric Generator for Waste-Heat Harvesting in Wearable Systems

Kossyvakis, D.N.; Vassiliadis, Savvas; Vossou, Clio; Mangiorou, Emmanouela; Potirakis, Stelios M.; Hristoforou, E.

doi:10.1007/s11664-016-4452-2

Cited by 7 publications

(5 citation statements)

References 24 publications

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“…To produce high quality implantable/wearable devices, tremendous efforts have been made to increase the output power or power density (W cm −2 ) of TEGs in order to obtain sufficient power supply and also to reduce the size and weight of the TEGs. Benefiting from the development of highly efficient TE materials and advanced microfabrication technologies, niche applications of implantable/wearable devices powered by miniaturized TEGs with extended lifetimes become very promising …”

Section: Thermoelectric Applications and Devicesmentioning

confidence: 99%

High Performance Thermoelectric Materials: Progress and Their Applications

Yang

Chen

Dargusch

et al. 2017

Advanced Energy Materials

656

434

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Thermoelectric (TE) materials have the capability of converting heat into electricity, which can improve fuel efficiency, as well as providing robust alternative energy supply in multiple applications by collecting wasted heat, and therefore, assisting in finding new energy solutions. In order to construct high performance TE devices, superior TE materials have to be targeted via various strategies. The development of high performance TE devices can broaden the market of TE application and eventually boost the enthusiasm of TE material research. This review focuses on major novel strategies to achieve high‐performance TE materials and their applications. Manipulating the carrier concentration and band structures of materials are effective in optimizing the electrical transport properties, while nanostructure engineering and defect engineering can greatly reduce the thermal conductivity approaching the amorphous limit. Currently, TE devices are utilized to generate power in remote missions, solar–thermal systems, implantable or/wearable devices, the automotive industry, and many other fields; they are also serving as temperature sensors and controllers or even gas sensors. The future tendency is to synergistically optimize and integrate all the effective factors to further improve the TE performance, so that highly efficient TE materials and devices can be more beneficial to daily lives.

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Section: Thermoelectric Applications and Devicesmentioning

confidence: 99%

High Performance Thermoelectric Materials: Progress and Their Applications

Yang

Chen

Dargusch

et al. 2017

Advanced Energy Materials

656

434

View full text Add to dashboard Cite

show abstract

“…Recently, there is an increasing trend for small-scale wearable and implantable electronic devices [1], [2], especially for health and wellness monitoring. With the evolution of the Internet of Things (IoT), in which sensors and wireless devices can interact to exchange information [3]- [5], the globe will be further connected and more intelligent.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, TEGs are renewable, with no moving parts hence high reliability [10], and noiseless. Although TEGs produce small quantities of power in micro-Watts, it has been proven to be sufficient to power most portable electronics such as wireless sensors [2], [14]- [16], and implantable electronics such as Cardiac PaceMaker [16]. However, TE is limited by low efficiency which is determined by the thermoelectric dimensionless figure of merit (ZT), given by: 𝒁𝑻 = 𝑺 𝟐…”

Section: Introductionmentioning

confidence: 99%

“…Leon et al [19] and Peng et al [20] both suggested planar circular patterns and used CMOS and Micro-ElectroMechanical Systems (MEMS) processes to design and fabricate micro-TEGs with promising results. Many researchers in this field have used a vertical configuration [2], [12], [13], [21], but the cross-plane design has limitations of short leg length due to aesthetics, hence small thermal gradient, and the need for the bonding process to anchor the connectors to the TE legs. Wang et al [22] conducted a comprehensive analytical model to investigate the impact of geometric parameters on the output metrics of the TEG.…”

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confidence: 99%

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A novel Design Approach of a Micro Thermoelectric Generator for High Power Density for Ambient Heat Energy Scavenging Applications.

Nayebare¹,

El-Bab²,

Megahed³

et al. 2024

RE&PQJ

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Thermoelectric generators (TEGs) have become an excellent candidate for autonomously powering wearable and implantable microelectronics, and wireless sensor networks in the Internet of Things (IoT) systems. This paper presents a doublelayer double-circuit planar TEG with high power output. The impact of the different geometric terms on the device performance is investigated by the use of an electrical model. By studying the impact of the width of the TE films, the number of pairs is optimized to give the optimal power output. The impact of increasing the number of pairs on the output variables of the TEG is also studied. The maximum power of 0.522µW was obtained from 32 pairs at a metal width of 3.82mm with a temperature difference of 17K. Further improvement in the output power up to mW can be obtained by optimizing the temperature difference and operating in a temperature range of about 450K, such as in industrial heat recovery applications.

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“…Owing to the fact that its specific performance in converting heat into electricity, thermoelectric material has been widely used in many areas, such as aerospace, [1][2][3][4] vehicle, [5,6] ship, [7,8] smart robots, [9][10][11] and waste heat recovery. [12][13][14][15][16][17] However, conversion efficiency is one of the important factors which hiders the application of thermoelectric materials extending. It is well known that the conversion efficiency in thermoelectric material is governed by the figure of merit ZT by [18] ZT = σ ε 2 T κ ,…”

Section: Introductionmentioning

confidence: 99%

Macro-performance of multilayered thermoelectric medium

Song

Gao

2017

Chinese Phys. B

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The effective properties of thermoelectric composites are well known to depend on boundary conditions, which causes the macro performance of thermoelectric composite to be difficult to assess. The overall macro-performance of multilayered thermoelectric medium is discussed in this paper. The analytical solutions are obtained, including the heat flux, temperature, electric potential, and the overall energy conversion efficiency. The results show that there are unique relationships between the temperature/electric potential and the electric current/energy flux in the material, and whether the material is independent of or embedded in thermoelectric composites. Besides, the Peltier effect at the interface can significantly improve the overall energy conversion efficiency of thermoelectric composites. These results provide a powerful tool to analyze the effective behaviors of thermoelectric composites.

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Computational Analysis of a Thermoelectric Generator for Waste-Heat Harvesting in Wearable Systems

Cited by 7 publications

References 24 publications

High Performance Thermoelectric Materials: Progress and Their Applications

High Performance Thermoelectric Materials: Progress and Their Applications

A novel Design Approach of a Micro Thermoelectric Generator for High Power Density for Ambient Heat Energy Scavenging Applications.

Macro-performance of multilayered thermoelectric medium

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