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Design and Numerical Evaluation of Cascade-Type Thermoelectric Modules

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Title: Design and Numerical Evaluation of Cascade-Type Thermoelectric Modules
Authors: Fujisaka, Takeyuki Browse this author
Sui, Hongtao Browse this author
Suzuki, Ryosuke O. Browse this author →KAKEN DB
Keywords: Thermoelectric generation
cascade module
numerical simulation
heat transfer
Issue Date: 26-Jan-2013
Publisher: Springer
Journal Title: Journal of Electronic Materials
Volume: 42
Issue: 7
Start Page: 1688
End Page: 1696
Publisher DOI: 10.1007/s11664-012-2400-3
Abstract: Thermoelectric (TE) generation performance can be enhanced by stacking several TE modules (so-called cascade-type modules). This work presents a design method to optimize the cascade structure for maximum power output. A one-dimensional model was first analyzed to optimize the TE element dimensions by considering the heat balance including conductive heat transfer, Peltier heat, and Joule heat, assuming constant temperatures at all TE junctions. The number of p–n pairs was successively optimized to obtain maximum power. The power output increased by 1.24 times, from 12.7 W in a conventional model to 15.7 W in the optimized model. Secondly, a two-dimensional numerical calculation based on the finite-volume method was used to evaluate the temperature and electric potential distributions. Voltage–current characteristics were calculated, the maximum power output was evaluated, and the efficiencies of two possible models were compared to select the optimal design. The one-dimensional analytical approach is effective for a rough design, and multidimensional numerical calculation is effective for evaluating the dimensions and performance of cascade-type TE modules in detail.
Rights: The final publication is available at
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 鈴木 亮輔

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