Enhancing thermal and electrical efficiency of a miniature TPV system

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Abstract

Methods to enhance the thermal and electrical efficiency of a miniature thermophotovoltaic (TPV) system are proposed and demonstrated with discussion in this paper. The miniature TPV system comprises a conventional swirling combustor, and a GaSb PV cell array. In order to improve the low illumination and incomplete combustion problems often encountered in conventional TPV combustor design, a novel design of a reverse tube for heat recuperation and a porous medium fuel injector is applied in the miniature TPV system. A reverse tube is expected to enhance flame stabilization and flame attachment to the inside wall of the emitter by suppressing the recirculation zone into the chamber, and simultaneously to redirect the hot product gas for reheating the outside wall of the emitter. In the present TPV combustor, the porous medium serves to increase the fuel/air mixing and also works as a flame stabilizer to anchor the flame. Results indicate that being assisted by the reverse tube and the porous medium the proposed novel TPV combustor design can apparently improve the illumination uniformity of the emitter, and hence enhance the thermal/radiant efficiency. Consequently, the electrical output and the overall efficiency of the miniature TPV system are demonstrated to be superior to the conventional design.

Original languageEnglish
Publication statusPublished - 2009 Jan 1
Event7th Asia-Pacific Conference on Combustion, ASPACC 2009 - Taipei, Taiwan
Duration: 2009 May 242009 May 27

Conference

Conference7th Asia-Pacific Conference on Combustion, ASPACC 2009
CountryTaiwan
CityTaipei
Period09-05-2409-05-27

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Chemical Engineering(all)

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  • Cite this

    Li, Y. H., Li, H. Y., Dunn-Rankin, D., & Chao, Y. C. (2009). Enhancing thermal and electrical efficiency of a miniature TPV system. Paper presented at 7th Asia-Pacific Conference on Combustion, ASPACC 2009, Taipei, Taiwan.