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SCIENCE CHINA Technological Sciences, Volume 61 , Issue 10 : 1600-1610(2018) https://doi.org/10.1007/s11431-017-9223-5

Influences of external heat transfer and Thomson effect on the performance of TEG-TEC combined thermoelectric device

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  • ReceivedOct 19, 2017
  • AcceptedMar 6, 2018
  • PublishedJun 19, 2018

Abstract

A thermodynamic model of a thermoelectric generator (TEG)-driven thermoelectric cooler (TEC) device considering Thomson effect and external heat transfer (HT) is established based on the combination of non-equilibrium and finite time thermodynamic theories. The expressions of cooling capacity and coefficient of performance (COP) are obtained. Performances are compared with and without considering Thomson effect using numerical optimization method. The influences of Thomson effect on the optimal performances, optimum allocations of thermoelectric (TE) element number and HT surface area are discussed. The results indicate that Thomson effect decreases the maximum cooling capacity and COP. More TE elements should be allocated to TEG, and more HT area should be allocated to the heat exchanger (HEX) of TEG, the hot-side HEX of TEG and the cold-side HEX of TEC in the design of the device considering Thomson effect. The results obtained can be used to help design TEG-TEC devices.


Funded by

the National Natural Science Foundation of China(Grant,Nos.,51576207,11305266)

the Natural Science Foundation of Naval University of Engineering(Grant,No.,20161505)


Acknowledgment

This work was supported by the National Natural Science Foundation of China (Grant Nos. 51576207, and 11305266) and the Natural Science Foundation of Naval University of Engineering (Greant No. 20161505). The authors wish to thank the reviewers for their careful, unbiased and constructive suggestions, which led to this revised manuscript.


Supplement

Supporting Information

The supporting information is available online at tech.scichina.com and www.springerlink.com. The supporting materials are published as submitted, without typesetting or editing. The responsibility for scientific accuracy and content remains entirely with the authors.


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