Performance Evaluation of Electricity Generation Systems Based on Semiconductor Thermoelectric Generators for Hypersonic Vehicles
- Paper number
IAC-17,C3,3,1,x39540
- Author
Mr. Kunlin Cheng, Harbin Institute of Technology, China
- Coauthor
Dr. Duo Zhang, Northwestern Polytechnical University, China
- Coauthor
Prof.Dr. Jiang Qin, Harbin Institute of Technology, China
- Coauthor
Prof. Silong Zhang, Harbin Institute of Technology, China
- Coauthor
Prof. Wen Bao, Harbin Institute of Technology, China
- Year
2017
- Abstract
The types and the characteristics of the waste heat on hypersonic vehicles and the application feasibility of thermoelectric generators (TEGs) for hypersonic aircrafts were discussed in this paper. Two thermoelectric generator models with isothermal heat source and variable temperature heat source were developed to predict the performance of the electricity generation systems on a hypersonic vehicle with different heat source. The thermoelectric efficiency variation with electric current, the temperature distribution of fuel and junctions, and the distribution of the thermoelectric figure of merit (ZT value) were described by diagrams. Besides, some improvements for a better performance were analyzed. The results indicate that the maximum values of thermoelectric efficiency are 5 % and 2.5 % for the isothermal heat source and the variable temperature heat source respectively, and the thermoelectric efficiency improves with the temperature of hot junction. The performance of the TEGs with variable temperature heat source is worse than that of the other TEGs under the same highest hot junction temperature.
- Abstract document
- Manuscript document
IAC-17,C3,3,1,x39540.pdf (🔒 authorized access only).
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