Fluid Dynamic Modeling of Oxygen Permeation through Mixed Ionic-Electronic Conducting Membranes
[EN] The oxygen transport in a lab-scale experimental set-up for permeation testing of oxygen transport membranes has been modeled using computational fluid dynamics using Finite Element Analysis. The modeling considered gas hydrodynamics and oxygen diffusion in the gas phase and vacancy diffusion o...
| Autores: | , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2011 |
| País: | España |
| Recursos: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/150328 |
| Acesso em linha: | https://riunet.upv.es/handle/10251/150328 |
| Access Level: | acceso abierto |
| Palavra-chave: | CFD Membrane Oxygen permeation Oxygen transport membrane Permeation setup Perovskite Transport modeling Air compartment Conducting membrane Dynamic modeling Experimental setup Gas inlet Gasphase Membrane surface Oxygen concentrations Oxygen diffusion Oxygen transport Oxygen-permeation flux Parametric study Permeation testing Polarization effect Vacancy diffusion Argon Composite membranes Computational fluid dynamics Finite element method Flow rate Gases Membranes Oxygen Oxygen permeable membranes Permeation Surface diffusion Transport properties Oxygen vacancies Article Electronics Finite element analysis Gas flow Geometry Membrane permeability Molecular dynamics Pparameter Polarization Priority journal INGENIERIA QUIMICA |
| Resumo: | [EN] The oxygen transport in a lab-scale experimental set-up for permeation testing of oxygen transport membranes has been modeled using computational fluid dynamics using Finite Element Analysis. The modeling considered gas hydrodynamics and oxygen diffusion in the gas phase and vacancy diffusion of oxygen in a perovskite disc-shaped membrane at 1273. K. In a first step, the model allowed obtaining the coefficient diffusion of oxygen. The parametric study showed that the set-up geometry and flow rate in the air compartment did not have major influence in the oxygen transport. However, very important polarization effects in the sweep-gas (argon) compartment were identified. The highest oxygen permeation flux and the lowest oxygen concentration on the membrane surface were obtained for the following conditions (in increasing order of importance): (1) a large gas inlet radius; (2) short gas inlet distance; and (3) a high gas flow rate. © 2011 Elsevier B.V. |
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