Thermoelectric Field Analysis of Trapezoidal Thermoelectric Generator Based on the Explicit Analytical Solution of Annular Thermoelectric Generator

Wei Niu and Xiaoshan Cao ()
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Wei Niu: School of Civil Engineering and Architecture, Xi’an University of Technology, Xi’an 710048, China
Xiaoshan Cao: School of Civil Engineering and Architecture, Xi’an University of Technology, Xi’an 710048, China

Energies, 2023, vol. 16, issue 8, 1-12

Abstract: The geometrical configuration is one of the main factors that affect the thermoelectric performance of a device. Research on the trapezoidal thermoelectric generator (TTEG) with varied cross section is mainly based on finite element simulation and experiment. In this paper, an explicit analytical solution of the maximum output power of annular thermoelectric generators (ATEG) is proposed, which has been proved to have high accuracy. Then, the maximum output power between ATEG and TTEG is compared. Results show that, for the appropriate geometric parameter δ , the relative error of maximum output power between explicit analytical ATEG and the simulated solution of TTEG can reach the order of 10 −3 . When the hot end is at the a side, the high temperature and θ is 510 K and 10°, respectively. For Bi 2 Te 3 material and PbTe material, the relative error of maximum output power between the explicit analytical and simulated solution is 0.0261% and 0.074%, respectively. Under suitable working conditions, the explicit analytical results of ATEG can provide some reference for the performance optimization of TTEG.

Keywords: trapezoidal thermoelectric generator; annular thermoelectric generator; varied cross section; explicit analytical solution; output power (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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