DOI QR코드

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내부개질형 고체산화물 연료전지의 마이크로 전극구조가 성능에 미치는 영향에 관한 해석적 연구

A Simulation Study of the Effect of Microstructural Design on the Performance of Solid Oxide Fuel Cells With Direct Internal Reforming

  • 투고 : 2013.09.14
  • 심사 : 2013.10.31
  • 발행 : 2013.10.31

초록

The paper is to study on the simulation of the micro/macroscale thermo-electrochemical model of a single cell of anode-supported SOFC with direct internal reforming. The coupled heat and mass transport, electrochemical and reforming reactions, and fluid flow were simultaneously simulated based on mass, energy, charge conservation. The micro/macroscale model first calculates the detailed electrochemical and direct internal reforming processes in porous electrodes based on the comprehensive microscale model and then solve the macroscale processes such as heat and mass transport, and fluid flow in SOFCs with assumption of fully-developed flow in gas channel. The simulation results evaluate the overall performance by analyzing distributions of mole fraction, current density, temperature and microstructural design in co/counter flow configurations.

키워드

참고문헌

  1. E. Achenbach, "Three dimensional and time dependent simulation of a planar solid oxide fuel cell stack", Journal of Power Sources, 49, 1994, pp. 333-348. https://doi.org/10.1016/0378-7753(93)01833-4
  2. P. Aguiar, D. Chadwick and L. Kershenbaum, "Modelling of an indirect internal reforming solid oxide fuel cell," Chem. Eng. Sci., 57, 2002, pp. 1665-1677. https://doi.org/10.1016/S0009-2509(02)00058-1
  3. U. Pasaogullari and C.Y. Wang, "Computational Fluid Dynamics Modeling of Solid Oxide Fuel Cells", Proceedings of SOFC-VIII, Eds. S.C. Singhal and M. Dokiya, 2003, pp. 1403-1412.
  4. Yuan, "Three-dimensional computational analysis of gas and heat transport phenomena in ducts relevant for anode-supported sofcs," Int. J. Heat Mass Transfer, 46, 2003, pp. 809-821. https://doi.org/10.1016/S0017-9310(02)00357-5
  5. F. Zhao and V. Virkar, "Dependence of polarization in anode-supported solid oxide fuel cells on various cell parameters", J. Power Sources, 141, 2005, pp. 79-95. https://doi.org/10.1016/j.jpowsour.2004.08.057
  6. Q. Wang, L. Li and C. Wanga, "Numerical study of thermoelectric characteristics of a planar solid oxide fuel cell with direct internal reforming of methane", Journal of Power Sources, 186, 2009, pp. 399-407. https://doi.org/10.1016/j.jpowsour.2008.10.034
  7. S. Sohn, J.H. Nam, "A micro/macroscale model for intermediate temperature solid oxide fuel cells with prescribed fully-developed axial velocity profiles in gas channels", Int. journal of Hydrogen energy, 35, 2010, pp. 890-907.
  8. G. YU, S.J. Park, J.W. Lee, S.B. Lee, T.H. Lim, R.H. Song, D.R. Shin, H.Y. Kim, "Numerical Analysis on Performance Changes of the Tubular SOFCs according to Current Collecting Method". Trans. Of the Korean Hydrogen and New Energy Society, Vol. 22, No. 2, 2011, pp. 129-138.
  9. D.H. Jeon, J.H. Nam and C.J. Kim, 2005, "A random resistor network analysis on anodic performance enhancement of solid oxide fuel cells by penetrating electrolyte structures", J. Power Sources, 139, pp. 21-29.
  10. P. Costamagna, "Micro-modelling of solid oxide fuel cell electrodes", Electrochim. Acta, 43, 1998, pp. 375-394. https://doi.org/10.1016/S0013-4686(97)00063-7
  11. D. Bouvard and F.F. Lange, "Relation between percolation and particle coordination in binary powder mixtures", Acta Metall. Mater., 39, 1991, pp. 3083-3090. https://doi.org/10.1016/0956-7151(91)90041-X
  12. J. Xu and G.F. Froment, "Methane steam reforming, methanation and water-gas shift. I. Intrinsic kinetics," A.I.Ch.E. Journal, 35, 1989a, 88-96. https://doi.org/10.1002/aic.690350109
  13. C.R. Wilke, "Diffusional properties of multicomponent gases", Chem. Eng. Prog., 46, 1950, pp. 95-104.
  14. B. Todd and J.B. Young, "Thermodynamic and transport properties of gases for use in solid oxide fuel cell modeling", J. Power Sources, 110, 2002, pp. 186-200. https://doi.org/10.1016/S0378-7753(02)00277-X
  15. E. Hernandez-Pacheco and M.D. Mann, "The rational approximation method in the prediction of thermodynamics properties for SOFCs", J. Power Sources, 128, 2004, pp. 25-33. https://doi.org/10.1016/j.jpowsour.2003.09.056