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Optimization analysis for thermoelectric performance improvement of biconical segmented annular thermoelectric generator

Author

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  • He, Hongxi
  • Xie, Yongchuan
  • Zuo, Qingsong
  • Chen, Wei
  • Shen, Zhuang
  • Ma, Ying
  • Zhang, Hehui
  • Zhu, Guohui
  • Ouyang, Yixuan

Abstract

Thermoelectric generators have struggled with low efficiency, limiting their widespread use. To further improve the performance of the thermoelectric generator, this paper introduces the biconical pin structure into the segmented annular thermoelectric generator, and simultaneously incorporates exergy efficiency and economic cost to evaluate its performance. Experiments are first used to verify the accuracy of the simulation model, and then the effects of the cone angle θ, leg height H, leg length ratio δ and resistance ratio ε are discussed. Finally, correlation analysis is used to obtain the weight of the impact of research parameters on thermoelectric performance, and the optimized results are obtained. The results demonstrate that the output power of the biconical segmented annular thermoelectric generator is 20.23 % higher, the exergy efficiency is 8.55 % higher, and the economic cost is reduced by 21.36 % compared to the traditional segmented annular thermoelectric generator. As the θ and H increase, the thermoelectric performance enhances. The influence of δ on thermoelectric performance is more complicated. When ε is 1.5, the thermoelectric generator has optimal thermoelectric performance. This paper provides a reference for optimizing the segmented annular thermoelectric generator structure and is of paramount importance for enhancing the efficiency of waste heat recovery.

Suggested Citation

  • He, Hongxi & Xie, Yongchuan & Zuo, Qingsong & Chen, Wei & Shen, Zhuang & Ma, Ying & Zhang, Hehui & Zhu, Guohui & Ouyang, Yixuan, 2024. "Optimization analysis for thermoelectric performance improvement of biconical segmented annular thermoelectric generator," Energy, Elsevier, vol. 306(C).
    • Handle: RePEc:eee:energy:v:306:y:2024:i:c:s0360544224021716
    DOI: 10.1016/j.energy.2024.132397
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