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Modelling of segmented high-performance thermoelectric generators with effects of thermal radiation, electrical and thermal contact resistances

Scientific reports, 2016-04, Vol.6 (1), p.24123-24123, Article 24123 [Peer Reviewed Journal]

Copyright Nature Publishing Group Apr 2016 ;Copyright © 2016, Macmillan Publishers Limited 2016 Macmillan Publishers Limited ;ISSN: 2045-2322 ;EISSN: 2045-2322 ;DOI: 10.1038/srep24123 ;PMID: 27052592

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  • Title:
    Modelling of segmented high-performance thermoelectric generators with effects of thermal radiation, electrical and thermal contact resistances
  • Author: Ouyang, Zhongliang ; Li, Dawen
  • Subjects: Efficiency ; Electric properties ; Electrodes ; Generators ; Immunoglobulin E ; Leg ; Net losses ; Performance evaluation ; Radiation ; Segmentation ; Simulation ; Temperature effects ; Temperature requirements
  • Is Part Of: Scientific reports, 2016-04, Vol.6 (1), p.24123-24123, Article 24123
  • Description: In this study, segmented thermoelectric generators (TEGs) have been simulated with various state-of-the-art TE materials spanning a wide temperature range, from 300 K up to 1000 K. The results reveal that by combining the current best p-type TE materials, BiSbTe, MgAgSb, K-doped PbTeS and SnSe with the strongest n-type TE materials, Cu-Doped BiTeSe, AgPbSbTe and SiGe to build segmented legs, TE modules could achieve efficiencies of up to 17.0% and 20.9% at ΔT = 500 K and ΔT = 700 K, respectively, and a high output power densities of over 2.1 Watt cm(-2) at the temperature difference of 700 K. Moreover, we demonstrate that successful segmentation requires a smooth change of compatibility factor s from one end of the TEG leg to the other, even if s values of two ends differ by more than a factor of 2. The influence of the thermal radiation, electrical and thermal contact effects have also been studied. Although considered potentially detrimental to the TEG performance, these effects, if well-regulated, do not prevent segmentation of the current best TE materials from being a prospective way to construct high performance TEGs with greatly enhanced efficiency and output power density.
  • Publisher: England: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 2045-2322
    EISSN: 2045-2322
    DOI: 10.1038/srep24123
    PMID: 27052592
  • Source: PubMed Central
    ProQuest Central
    DOAJ Directory of Open Access Journals
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