Radiation Heat Transfert in ZrO2-8% Y2O3 Electrolyte Of SOFC Fuel Cell

Abdessemed, S.; Zitouni, B.; Benmoussa, H.; Rousseau, B.

Journal of Scientific Research
Volume 1, Numéro 1, Pages 24-28
2011-06-01

Radiation Heat Transfert In Zro2-8% Y2o3 Electrolyte Of Sofc Fuel Cell

Authors : Abdessemed S. . Zitouni B. . Benmoussa H. . Rousseau B. .

Abstract

SOFC operating temperature is relatively high. This last one is imposed by the electrolyte mode operating which becomes ionic conducting at these high temperatures (1000- 1300K). The exact contribution of the thermal radiation to the total heat balance is not well known. The thermal radiation can play a very significant role in the thermal combination of transfer through the various SOFC structure layers. The thermal radiation utilizes another mechanism which is the electromagnetic radiation. In this case, atoms, molecules and free electrons of the SOFC components can lose a part of their kinetic energy by emission of an electromagnetic radiation received by the components. Electrolyte and electrodes are considered as semi-transparent medium. They can absorb disperse and emit the thermal radiation. In this work, we study the temperature gradient following a conduction-radiation model in the SOFC electrolyte. The approximation of Schuster-Schwarzchild is used to evaluate the Radiatif heat flow through the electrolyte SOFCs. The results obtained by the finite volume method show the effect of spectral parameters and optical dimensions on the spatial distribution of temperature in SOFC electrolyte