Abstract
The Solid oxide fuel cells (SOFC) have the potential to become one of the efficient and cost-effective direct management systems for converting a wide variety of fuels into electricity. In this study, we developed a three-dimensional model with a single phase of a solid oxide fuel cell (SOFC) planar fueled with hydrogen to improve the fundamental understanding of transport phenomena and performance in the SOFC. The simulations were carried out using COMSOL Multiphysics software (version 5.4) based on the finite element method for solving the continuity equation (mass transport), the conservation equation (transport of the moment of transport). gas, ordinary diffusion transport of chemical species, heat transfer, charge transport), a parametric study was done to examine the effect of certain parameters such as the operating pressure, the temperature and porosity the porosity of the electrodes) the gas diffusion layer (GDL) on the performance of the SOFC stack for boundary conditions.
Highlights
With the oil conflict, oil price issues and the need to reduce greenhouse gas emissions interest in fuel cells growing and manufacturers to find new solutions for the future
For the research presented here, the 'Batteries and Fuel Cells' module was used by loading the solid oxide fuel cells (SOFC)-unit -cell module. which offers the user the possibility to build models of electrodes and electrolytes in detail gives an easy interface for the modeling aspect, which is designed precisely to treat Multiphysics problems, the software proposes additional modules specific to every field of physics
The model predicts the polarization curves (SOFC voltage vs current density) and power In order to evaluate the performance of the SOFC, we examine the effect of various parameters such as the porosity of GDL, the operating pressure and temperature of the cell SOFC, a parametric study was conducted
Summary
Oil price issues and the need to reduce greenhouse gas emissions interest in fuel cells growing and manufacturers to find new solutions for the future. A fuel cell does not discharge itself and does not require charging, but works as long as fuel and oxidant are provided so offer a unique advantages, in terms of energy efficiency is high; near-zero-emissions with clean hydrogen that can help to significantly reduce emissions of greenhouse gas that is to say, that produced from water and renewable energy , mechanical simplicity, they have certain weaknesses the high cost of manufacture, the lifetime, their weight and their volume [1] They can be used in a wide range of applications because of their flexible operation, that is, they can be used alone or in hybrid systems in portable transport and applications. The high operating temperature of SOFC produces high-quality heat that can be used for cogeneration or for combined cycle applications, increasing efficiency up to 70% [3]
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