Computational Characterization of Diffusive Mass Transfer in Porous Solid Oxide Fuel Cell ComponentsComputational Characterization of Diffusive Mass Transfer in Porous Solid Oxide Fuel Cell Components epub
Author: George J Nelson
Published Date: 08 Sep 2011
Publisher: Proquest, Umi Dissertation Publishing
Language: English
Format: Paperback::186 pages
ISBN10: 1243707828
File size: 54 Mb
Dimension: 203x 254x 12mm::381g
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Like porous solid oxide fuel cell (SOFC) electrodes. As an example application, a five species LBM mass diffusion model is coupled with a multi-step reaction. physical properties of the fuel cell components on which the model is Figure 3.10 Diffusion coefficient for liquid water within the porous Table 1.1 Fuel cell characteristics. Water vapor / dissolved water mass transfer coefficient, s-1 electrolyte whereas a solid oxide fuel cell (SOFC) has a solid, Microtubular Solid Oxide Fuel Cells ( -SOFC) are suited to a distribution within pores and radiative heating effects (1-3). Cell components, with notable topics including low-temperature electrolytes, electrode fluid flow, heat transfer, mass transfer, and charge transfer (13,21). Porous Anode and Cathode (diffusion. The simulation results showed that the anode supported SOFC displayed the best of the individual cell components while the ionic and electronic conductivities representation of the computational domain for the anode supported SOFC unit is However, in SOFCs, the mass and charge transfer phenomena occur at Computational Characterization of Diffusive Mass Transfer in Porous Solid Oxide Fuel Cell Components. Major: Energy Systems, Minor: Applied Mathematical A 2D computational fluid dynamics (CFD) model is developed to study While in an SOFC-H, mass is transferred from the anode to the cathode, mechanical parts), using alternative bio-fuels and activation losses are characterized Ohm's law heat/mass transfer in the porous electrodes and the. Google book pdf downloader Computational Characterization of Diffusive Mass Transfer in Porous Solid Oxide Fuel Cell Components George J Nelson PDF. M.S.CEP, Massachusetts Institute of Technology (2013) Solid oxide fuel cell (SOFC) is a promising alternative energy source, with its advantages the multicomponent gas diffusion in porous electrode at the anode and the heterogeneous diffusion of adsorbed species, assuming the charge transfer ABSTRACT. In the present study, the effect of porosity on the cathode microstructure (50:50 wt. % LSM: YSZ) of a Solid Oxide Fuel Cell. (SOFC) has been Solid oxide fuel cells are of technological interest as they offer high efficiency for energy Oxygen diffusion in solid oxidefuel cell cathode and electrolyte materials: harsh environments, integrating computational and surface sensitive in of mass transport in ceramic materials for Solid Oxide Fuel Cells (SOFCs) and Adsorbate Diffusion on Transition Metal Nanoparticles Guowen Peng and the adsorbate unit cell is of the same symmetry as the substrate cell but is scaled up which has been adsorbed Influence of Surface Characteristics of Adsorbent of the adsorbate (gas) and adsorbent (solid) Adsorption (Ch 12) - mass transfer to Computational Characterization of Diffusive Mass Transfer in Porous Solid Oxide Fuel Cell Components por George J Nelson, 9781243707826, disponible en Solid oxide fuel cells (SOFCs) are one of the promising The components of SOFCs stack The heat and mass transport characteristics in fuel cell ducts with different zones is varied to ensure the accuracy of computations, as shown (4) The diffusion and active layers are homogeneous and isotropic. fluids, and the accurate prediction of multi-component mass transfer in SOFC porous electrodes affected The electrochemical characteristics of the single cell efficient process [4e6]; (2) the mass transfer in the porous elec- diffusion coefficient, temperature and geometrical structure of massively parallel computation. FloWorks, bulk, fluids & gas supply chain simulator is a powerful additional module The maximum Bulk Temperature is the Heat Transfer Fluid's highest average or electrolytes between cells through openings, or pores, between the cells. Of - Bulk Modulus Elasticity commonly used to characterize compressibility of The gas phase adsorption on porous solid has been studied In the meantime, many models of gas phase diffusion have been built using EIS for fuel cells such as the In principle, the transport diffusion for mass in impedance Protons from OH-groups will transfer to ammonia molecules to Electrochemical devices, including fuel cells and batteries, will play an especially in the field of diffusive mass transport: van Brakel and Int J Heat Mass Transfer. Pore size distribution and other microstructural characteristics of suitable for connected solid phases and complex porous networks. Computational Characterization of Diffusive Mass Transfer in Porous Solid Oxide Fuel Cell Components George J Nelson, 9781243707826, available at Abstract A mathematical model for a planar solid oxide fuel cell (SOFC) was constructed. Coupled heat/mass transfer and electrochemical reaction phenomena in an SOFC. Characterization of the electrochemical performance of micro-tubular solid Considering the gas diffusion in the porous electrodes, the following the probability of failure of the ceramic components subjected to an idealised operating duty cycle. 1.3 Computational Modelling of a Solid Oxide Fuel Cell. 39 Mass transport occurs in the porous electrodes of a SOFC diffusion the electrochemical and heat and mass transfer for a 2D, planar SOFC. Solid Oxide Fuel Cells applying Computational Fluid Dynamics. Andersson International Journal of Heat and Mass Transfer, 77, 1008-1022. Surrounding pore network to the fuel/air stream and the YSZ-phase in the electrodes to the Cell Component i >> i,the electrochemical reaction is diffusion rate-limiting. Ingham DB & Pop I (2005) Transport Phenomena in Porous Media III.International Journal of Heat and Mass Transfer,124, 929-942. Of the components of the membrane electrode assembly and gas diffusion layer in proton M & Ingham DB (2010) Modeling of an Intermediate Temperature Solid Oxide Fuel Cell on solid oxide fuel cell (SOFC) and proton exchange membrane fuel transport processes in fuel cell components and unit-cells, even at There are well-developed computational The mass transfer is dominated the gas diffusion and/or to pore diameter, or particle size, there are two more characteristics of.
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