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Performance optimization of a two-stage semiconductor thermoelectric-generator

Author

Listed:
  • Chen, Lingen
  • Li, Jun
  • Sun, Fengrui
  • Wu, Chih

Abstract

A model of a two-stage semiconductor thermoelectric-generator with external heat-transfer is built. Performance of the generator, assuming Newton's heat-transfer law applies, is analyzed using a combination of finite-time thermodynamics and non-equilibrium thermodynamics. The analytical equations about the power output versus the working electrical current, and the thermal efficiency versus working electrical-current are derived. For a fixed total heat-transfer surface-area for two heat-exchangers, the ratio of heat-transfer surface-area of the high-temperature side heat-exchanger to the total heat-transfer surface-area of the heat-exchangers is optimized for maximizing the power output and the thermal efficiency of the thermoelectric-generator. For a fixed total number of thermoelectric elements, the ratio of number of thermoelectric elements of the top stage to the total number of thermoelectric elements is also optimized for maximizing both the power output and the thermal efficiency of the thermoelectric-generator. The effects of design factors on the performance are analyzed.

Suggested Citation

  • Chen, Lingen & Li, Jun & Sun, Fengrui & Wu, Chih, 2005. "Performance optimization of a two-stage semiconductor thermoelectric-generator," Applied Energy, Elsevier, vol. 82(4), pages 300-312, December.
    • Handle: RePEc:eee:appene:v:82:y:2005:i:4:p:300-312
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    References listed on IDEAS

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    1. Şişman, Altuǧ & Yavuz, Hasbi̇, 1995. "The effect of joule losses on the total efficiency of a thermoelectric power cycle," Energy, Elsevier, vol. 20(6), pages 573-576.
    2. Chen, Jincan & Yan, Zijun & Wu, Liqing, 1997. "Nonequilibrium thermodynamic analysis of a thermoelectric device," Energy, Elsevier, vol. 22(10), pages 979-985.
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