scholarly journals Operation of solid oxide fuel cells on glycerol fuel: A thermodynamic analysis using the Gibbs free energy minimization approach

2010 ◽  
Vol 195 (17) ◽  
pp. 5637-5644 ◽  
Author(s):  
Aline Lima da Silva ◽  
Iduvirges Lourdes Müller
Keyword(s):  
Free Energy ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Gibbs Free Energy ◽  
Thermodynamic Analysis ◽  
Energy Minimization ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Gibbs Free Energy Minimization ◽  
Minimization Approach

Fuel options for solid oxide fuel cells: A thermodynamic analysis

AIChE Journal ◽  
2003 ◽  
Vol 49 (1) ◽  
pp. 248-257 ◽  
Author(s):  
S. L. Douvartzides ◽  
F. A. Coutelieris ◽  
A. K. Demin ◽  
P. E. Tsiakaras
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Thermodynamic Analysis ◽  
Solid Oxide ◽  
Oxide Fuel

Theoretical Calculation of the Electrical Potential at the Electrode/Electrolyte Interfaces of Solid Oxide Fuel Cells

2005 ◽  
Vol 2 (4) ◽  
pp. 238-245 ◽  
Author(s):  
Ismail Celik ◽  
S. Raju Pakalapati ◽  
Maria D. Salazar-Villalpando
Keyword(s):  
Free Energy ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Electrical Potential ◽  
Solid Oxide ◽  
Ion Concentration ◽  
Oxide Fuel ◽  
Oxygen Ion ◽  
Proposed Model ◽  
Semi Empirical

A new semi-empirical model is formulated to calculate the potential differences at the cathode/electrolyte and electrolyte/anode interfaces separately for solid oxide fuel cells. The new model is based on a reduced reaction mechanism, and it accounts for the oxygen ion concentration at these interfaces. The model also considers the Gibbs free energy for the two electrode interfaces seperately. Results from case studies demonstrate the great potential of the proposed model

Study of Chemical Quench of High Temperature Syngas

2011 ◽  
Vol 9 (1) ◽  
Author(s):  
Zhen Yang ◽  
Yinhe Liu ◽  
Zidong Cao
Keyword(s):  
Free Energy ◽  
High Temperature ◽  
Moisture Content ◽  
Gibbs Free Energy ◽  
Energy Minimization ◽  
Feeding Rate ◽  
Energy Utilization ◽  
Quench Temperature ◽  
Gibbs Free Energy Minimization ◽  
Minimization Approach

Quench of high temperature raw syngas to a certain degree is of great importance for the availability of a gasifier, and it influences the economical running of whole energy utilization system. Chemical quench is one of the best choices for high temperature syngas quench. Based on the Gibbs free energy minimization approach, thermodynamic analyses are carried out to elucidate the quench process of high temperature syngas. The optimal quench temperature and optimal feeding rate of coal are achieved with the consideration of effects such as inlet syngas temperature, steam input and moisture content in the coal. The results show that chemical quench is an effective way for high temperature syngas quench. The higher the temperature of syngas is, the better the chemical quench effect is. Steam input to the syngas can enhance the chemical quench reaction for the same coal feeding rate, while the effect of moisture content in coal on chemical quench is negligible.

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