A real-sized three-dimensional numerical model of thermoelectric generators at a given thermal input and matched load resistance

Shi, Yongming; Zhu, Zhixiang; Deng, Yuan; Zhu, Wei; Chen, Xin; Zhao, Yong

doi:10.1016/j.enconman.2015.06.020

Cited by 21 publications

(7 citation statements)

References 30 publications

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“…Each TE module included 31 pairs of p-type and n-type TE legs made of Bi 2 Te 3 with dimensions of 30 mm × 30 mm × 3.42 mm. The numerical data for the power vs. current curve were in good agreement (within 8%) with the experimental data when the temperature differences between the waste gas and the cooling water were less than 200 K. Shi et al [39] studied the 3-D TEG by using the finite element method. The temperature and electric fields of TE material were calculated under the constant heat flux boundary condition.…”

Section: Numerical Simulation Of Teg Systemsupporting

confidence: 53%

A review on thermoelectric-hydraulic performance and heat transfer enhancement technologies of thermoelectric power generator system

et al. 2018

THERM SCI

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The thermoelectric material is considered to a good choice to recycle the waste heat in the power and energy systems because the thermoelectric material is a solid-state energy converter which can directly convert thermal energy into electrical energy, especially suitable for high temperature power and energy systems due to the large temperature difference. However, the figure of merit of thermoelectric material is very low, and the thermoelectric power of generator system is even lower. This work reviews the recent progress on the thermoelectric power generator system from the view of heat transfer, including the theoretical analysis and numerical simulation on thermoelectric-hydraulic performance, conventional heat transfer enhancement technologies, radial and flow-directional segmented enhancement technologies for the thermoelectric power generator system. Review ends with the discussion of the future research directions of numerical simulation methods and heat transfer enhancement technologies used for the thermoelectric power generator in high temperature power and energy systems.

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Section: Numerical Simulation Of Teg Systemsupporting

confidence: 53%

A review on thermoelectric-hydraulic performance and heat transfer enhancement technologies of thermoelectric power generator system

et al. 2018

THERM SCI

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“…A low internal resistance of <1 Ω has been widely reported in Ni bonding interfaces between Bi 2 Te 3 /Sb 2 Te 3 TE legs and Cu interconnections . In terms of unit dimensions, factors including the unit cross‐sectional area, the thickness of the TE legs, and the substrate, as well as the fill factor F (0 < F < 1, and the fraction of the area covered by units), are reported to affect device output performance. Considering thermal conductance and electrical resistance possess opposite requirements compared to these factors, optimizing them is necessary in order to maximize the output from the devices.…”

Section: Fabrication and Design Of Fte Devicesmentioning

confidence: 99%

Flexible Thermoelectric Materials and Generators: Challenges and Innovations

et al. 2019

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The urgent need for ecofriendly, stable, long‐lifetime power sources is driving the booming market for miniaturized and integrated electronics, including wearable and medical implantable devices. Flexible thermoelectric materials and devices are receiving increasing attention, due to their capability to convert heat into electricity directly by conformably attaching them onto heat sources. Polymer‐based flexible thermoelectric materials are particularly fascinating because of their intrinsic flexibility, affordability, and low toxicity. There are other promising alternatives including inorganic‐based flexible thermoelectrics that have high energy‐conversion efficiency, large power output, and stability at relatively high temperature. Herein, the state‐of‐the‐art in the development of flexible thermoelectric materials and devices is summarized, including exploring the fundamentals behind the performance of flexible thermoelectric materials and devices by relating materials chemistry and physics to properties. By taking insights from carrier and phonon transport, the limitations of high‐performance flexible thermoelectric materials and the underlying mechanisms associated with each optimization strategy are highlighted. Finally, the remaining challenges in flexible thermoelectric materials are discussed in conclusion, and suggestions and a framework to guide future development are provided, which may pave the way for a bright future for flexible thermoelectric devices in the energy market.

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“…On the other hand, numerical 3D models account for thermal and electrical effects in all directions, although they are computationally expensive. They have been used for computing the optimum dimensions of thermoelectric legs 24 and optimum design of a heat sink. 25 Shi et al 24 modeled a real-sized TEG module with all the components and solved the conservation equations for energy and electrical potential in 3D for the entire domain, comprised of 2N semiconductors.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Thermal Integration of a Catalytic Microcombustor with a Thermoelectric for Power Generation Applications

Yedala

Kaisare

2021

Energy Fuels

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Power generation from coupled devices employing combustion in microreactors is generating interest for portable or decentralized energy demands. We develop a model framework to predict the performance of an integrated catalytic microreactor−thermoelectric generator (TEG) device, using CFD. A strategy for modeling a standalone TEG module is proposed and validated first, followed by thermally integrating it with a microreactor. The concepts of 1D global energy conservation with lumped treatment of the electrical properties are used to develop the TEG model. Multiple thermocouples, consisting of p-and n-type semiconductors connected in series, are modeled as a single block. The properties of the Seebeck coefficient, internal resistance, and thermal conductance are aggregated for the entire block and estimated as polynomial functions of temperature. These parameters can be estimated from manufacturer data. The source terms for Seebeck, Peltier, Thomson, and Joule's effects are incorporated into the energy conservation equation to model the TEG at steady state. The TEG model is validated with experiments in the literature. The catalytic combustion of hydrogen in a microreactor is validated independently and is subsequently used for modeling a catalytic microreactor integrated with a TEG module for power generation. The power extracted by various load resistances from the coupled device, at multiple values of inlet flow rates, is calculated and shows a good comparison with experimental data in the literature.

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A real-sized three-dimensional numerical model of thermoelectric generators at a given thermal input and matched load resistance

Cited by 21 publications

References 30 publications

A review on thermoelectric-hydraulic performance and heat transfer enhancement technologies of thermoelectric power generator system

A review on thermoelectric-hydraulic performance and heat transfer enhancement technologies of thermoelectric power generator system

Flexible Thermoelectric Materials and Generators: Challenges and Innovations

Modeling of Thermal Integration of a Catalytic Microcombustor with a Thermoelectric for Power Generation Applications

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