scholarly journals Development of the first Russian monoblock reformer of hydrocarbon fuel with hydrogen extraction from the reaction zone for fuel-cell based plants

2019 ◽  
Vol 2 (388) ◽  
pp. 112-122
Author(s):  
V. Avakov ◽  
◽  
D. Khairov ◽  
I. Landgraf ◽  
S. Zhivulko ◽  
...  
2019 ◽  
Vol 3 (1) ◽  
pp. 1271-1277 ◽  
Author(s):  
Alexander G. Bauer ◽  
Elod Gyenge ◽  
Colin Oloman

Author(s):  
X. Xie ◽  
X. Xue

A two-dimensional isothermal mathematical model is developed for an anode-supported planar solid oxide fuel cell (SOFC). The model takes into account the complex coupling effects of multi-physics processes including mass transfer, charge (ion/electron) transport, and electrochemical reaction. The SOFC multi-physics processes are numerically linked to SOFC global performance such as polarization curve. The model is validated using polarization curve as a metric with the experimental data from open literature. Since triple phase boundary reaction zone may vary from the vicinity of the electrolyte all the way to the entire electrode depending on selected materials and fabrication process, the effects of anode active reaction zone with different volumes are investigated comprehensively for a generic button cell using the developed mathematical model. The tradeoff design between active reaction zone volumes and other design parameters such as porosity and tortuosity of electrodes are also examined. Results show that porous composite electrode properties have very complex effects on SOFC performance. The results may provide a valuable guidance for high performance SOFC design and fabrication.


2000 ◽  
Author(s):  
Paul A. Erickson ◽  
Vernon P. Roan

Abstract This paper provides a theoretical basis for the investigation of using acoustic waves as a means of enhancing performance in conjunction with the hydrocarbon fuel steam-reforming process for application in fuel cell vehicles. In order to minimize liabilities associated with steam-reforming, a novel reforming enhancement is being investigated. A reformation process that utilizes acoustic fields in critical fluid paths is introduced. Potential benefits of using acoustic fields in the reformation process are decreased effective space velocity, an increase of convective heat transfer rates, and increased specie mixing that would help produce an increase in capacity and overall reaction rate for a given reformer volume. The proposed acoustic enhancement should result in some combination of quicker start up times, faster dynamic response, smaller size and lower weight.


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