Numerical Modeling of a Disk Shape Planar SOFC

2004 ◽  
Author(s):  
Zheng Dang ◽  
Hiroshi Iwai ◽  
Kenjiro Suzuki
Keyword(s):  
Mass Transfer ◽  
Numerical Modeling ◽  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Thermal Management ◽  
Effective Means ◽  
Solid Oxide ◽  
Potential Fields ◽  
Oxide Fuel ◽  
Electrochemical Processes

In this study, numerical modeling of air and fuel flows, electrochemical processes, heat and mass transfer and electric potential fields and related electric current has been attempted for a disk shape planar solid oxide fuel cell (SOFC). This is the extension of the previous similar works on a tubular type solid oxide fuel cell, Nishino et al. (2003) and Li and Suzuki (2004). Numerical model to be established can be used as an effective means to simulate the phenomena in the cell. Such information can be used in the optimum design and thermal management of SOFC.

A novel cooler for the thermal management of solid oxide fuel cell stack

2021 ◽  
Vol 48 ◽  
pp. 101564
Author(s):  
Keqing Zheng ◽  
Ya Sun ◽  
Shuanglin Shen ◽  
Li Li ◽  
Shaorong Wang
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Thermal Management ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Fuel Cell Stack

Catalysis of the electrochemical processes on solid oxide fuel cell cathodes

1996 ◽  
Vol 61 (1-2) ◽  
pp. 205-211 ◽  
Author(s):  
J.W. Erning ◽  
T. Hauber ◽  
U. Stimming ◽  
K. Wippermann
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Electrochemical Processes ◽  
Fuel Cell Cathodes ◽  
Cell Cathodes

A Study of Transport Geometry on Heat/Mass Transfer and Polarization of a Solid Oxide Fuel Cell

2006 ◽  
Author(s):  
Yan Ji ◽  
J. N. Chung ◽  
Kun Yuan
Keyword(s):  
Mass Transfer ◽  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Heat Mass Transfer ◽  
Three Dimensional ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Transfer Coefficients ◽  
Cell Efficiency ◽  
Current Path

The main objective of this paper is to examine the effects of transport geometry on the efficiency of an electrolyte-supported solid oxide fuel cell. A three-dimensional thermo-fluid-electrochemical model is developed to the influences of channel dimensions, rib width and electrolyte thickness on the temperature, mass transfer coefficients, species concentration, local current density and power density. Results demonstrate that decreasing the height of flow channels can significantly lower the average solid temperature and improve the cell efficiency due to higher heat/mass transfer coefficient between the channel wall and flow stream, and a shorter current path. However, this improvement is limited for the smallest channel. The cell with a thicker rib width and a thinner electrolyte layer has higher efficiency and lower average temperature. Numerical simulation will be expected to help optimize the design of a solid oxide fuel cell.

Numerical Analysis of Heat/Mass Transfer and Electrochemical Reaction in an Anode-Supported Flat-Tube Solid Oxide Fuel Cell

2006 ◽  
Author(s):  
Masayuki Suzuki ◽  
Naoki Shikazono ◽  
Koji Fukagata ◽  
Nobuhide Kasagi
Keyword(s):  
Mass Transfer ◽  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Electrochemical Reaction ◽  
Cell Model ◽  
Flow Direction ◽  
Three Dimensional ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Flat Tube

Three-dimensional heat and mass transfer and electrochemical reaction in an anode-supported flat-tube solid oxide fuel cell (FT-SOFC) are studied. Transport and reaction phenomena mainly change in the streamwise direction. Exceptionally, hydrogen and water vapor have large concentration gradients also in the cross section perpendicular to the flow direction, because of the insufficient mass diffusion in the porous anode. Based on these results, we develop a simplified one-dimensional cell model. The distributions of temperature, current, and overpotential predicted by this model show good agreement with those obtained by the full three-dimensional simulation. We also investigate the effects of pore size, porosity and configuration of the anode on the cell performance. Extensive parametric studies reveal that, for a fixed three-phase boundary (TPB) length, rough material grains are preferable to obtain higher output voltage. In addition, when the cell has a thin anode with narrow ribs, drastic increase in the volumetric power density can be achieved with small voltage drop.

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