... loading only at p2 02 10 2009 16 10 2009 03 11 2010 03 11 2010 electrochemical electrodes finite element analysis finite volume methods freezing proton exchange membrane fuel cells thermal analysis thermal insulation Quick startup of a proton exchange...

... 09 04 2010 coal gasification finite volume methods fuel cell power plants sensitivity analysis solid oxide fuel cells SOFC planar coal gasification IGFC finite volume model A finite volume SOFC model has been developed for coal-based IGFC systems analysis. The model...

... element analysis finite volume methods iterative methods two-phase flow By applying the combined finite element-upwind finite volume method ( 11 12 13 9 ) to a linearized 3D steady-state, two-phase DMFC model together with Newton’s method, we define the following combined FEM-upwind...

..., the bypass of cathode air, and the fuel utilization, achieving very high part-load efficiency and respecting constraints on the admitted operating range for the plant components. 07 04 2009 30 09 2009 17 03 2010 17 03 2010 compressors finite volume methods gas turbines heat...

... and design optimization. fuel cell SOFC optimization adjoint anodes differentiation electrolytes finite difference methods finite volume methods mesh generation Newton method optimisation porosity sensitivity analysis solid oxide fuel cells 17 06 2007 08 01 2008 02...

... analysis finite volume methods heat transfer solid oxide fuel cells temperature distribution Mathematical modeling is an essential tool for the analysis and design of fuel cells, where R&D efforts are constantly aiming to develop more efficient, economic, and durable products...

...). A cross area of the current path ( m 2 ) C s molar concentration of species s ( mol ∕ m 3 ) I electrical current load (A) J number of discretization units in the finite volume method T temperature (K) ∇ T PEN...

... 2008 electrochemical analysis finite volume methods flow simulation fuel cells laminar flow mass spectroscopic chemical analysis partial differential equations reaction kinetics In order to obtain a better understanding of pathways and to estimate constants of electrocatalytic...

.... Nevertheless, several key issues need to be resolved before fuel cells can become competitive with other energy conversion techniques. One of these key issues is water management. catalysts convection drag electrochemistry electrophoresis finite element analysis finite volume methods Galerkin...

... ) O 2 9.53 N 2 61.46 CO 2 6.38 H 2 O 22.63 21 11 2005 14 04 2006 current density electrochemical analysis finite volume methods fuel cell power plants gas turbines heat losses heat transfer hybrid power systems molten...

... distribution hydrodynamics humidity finite volume methods computational fluid dynamics fuel cell numerical modeling thermal polarization curve The performance and efficiency of the proton exchange membrane fuel cell (PEMFC) must be improved, and the issues of cost, reliability, and safety...

..., are simulated using the finite volume method. The gas flow in the porous electrodes is governed by the isotropic linear resistance model with constant porosity and permeability. The diffusions of reactant species in the porous electrodes are described by the Stefan-Maxwell relation. Effective diffusivities...

... electro-osmotic drag and diffusion and is solved using a finite volume method for a one-dimensional isothermal system. Transport properties including the water drag and diffusion coefficients and membrane ionic conductivity are expressed as functions of water content and temperature. An analytical...