Prediction of Operating Temperature and Power Generation Performance Limit with Structure Optimization for Thermoelectric Elements in Outer Space
[1]HE Yuan,DONG Zhenjiao,JIA Haoyang,et al.Prediction of Operating Temperature and Power Generation Performance Limit with Structure Optimization for Thermoelectric Elements in Outer Space[J].Journal of Zhengzhou University (Engineering Science),2027,48(XX):1-8.[doi:10.13705/j.issn.1671-6833.2026.03.015]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
48
Number of periods:
2027 XX
Page number:
1-8
Column:
Public date:
2027-12-10
- Title:
- Prediction of Operating Temperature and Power Generation Performance Limit with Structure Optimization for Thermoelectric Elements in Outer Space
- Keywords:
- thermoelectric elements; safety temperature; limit electrical performance; structure optimization; performance prediction
- CLC:
- TM913TN377 TK121V57
- Abstract:
- In response to the lack of effective models for safety and limit performance prediction of thermoelectric devices in outer space, a thermal-electrical-mechanical multi-field coupling model for space thermoelectric elements is established. The power generation efficiency and thermal stress of thermoelectric elements under two kinds of leg structures (width a = 1 mm, height h = 1 mm and width a = 4 mm, height h = 4 mm) within cold-side temperature range of 178~298 K are compared, demonstrating the importance of safety temperature and its prediction for enhancing thermoelectric efficiency. The influence of variation of thermoelectric leg width and height within 1~4 mm on the safety temperature, the corresponding limit electrical efficiency and limit power density is analyzed. By collecting Latin Hypercube Samples and employing an artificial neural network, prediction models are constructed to accurately predict the safety temperature, limit electrical efficiency, and limit power density based on variations in the width and height of the thermoelectric legs. Using a multi-objective genetic algorithm, the optimal solution set including thermoelectric leg width and height balancing the limit electrical efficiency and limit power density is derived. Among these, the configuration with the leg width a = 1.14 mm and leg height h = 1.02 mm achieves a high limit electrical efficiency (9.48%) and a high limit power density (153.35 W/kg). The prediction model that incorporates both safety temperature and limit electrical performance contributes to the optimization design and performance improvement of thermoelectric elements.
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Last Update:
2026-04-17
