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Effect of Air Flow Rate on the Performance of Planar Solid Oxide Fuel Cell using CFD

평판형 고체산화물 연료전지의 CFD 성능해석에서 공기유량변화의 영향

Kim, Danbi;Han, Kyoungho;Yoon, Do-Young
김단비;한경호;윤도영

  • Received : 2015.09.01
  • Accepted : 2015.10.21
  • Published : 2015.11.30

Abstract

Solid Oxide Fuel Cells (SOFC) continue to be among the most promising alternative energy devices. This paper addresses i-V characteristics of SOFC with a focus on air flow rate along the planar anode electrodes. To address this, detailed Butler-Volmer kinetics are implemented in a general-purpose CFD code FLUENT. The numerical results were validated against experimental data from the literature showing excellent match with i-V polarization data ranging 1V-0.4V. Numerical calculations of fuel cell operation under different flow rare conditions were performed in three-dimensional geometries. Results are presented in terms of concentration distribution of hydrogen, oxygen, and water. The simulations and results indicate that advanced CFD with UDF(User-Defined Function) of Butler-Volmer kinetics can be used to identify the conditions leading to air flow rate and specific surface area and guide development of operating conditions and improve the fuel cell system performance.

Keywords

SOFC;CFD;electrochemistry;flow rate;concentration loss

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Acknowledgement

Supported by : 한국과학기술연구원