Thermodynamic and economic analysis of a steam reformer-solid oxide fuel cell system fed by natural gas and ethanol
In the present work, ethanol and methane are compared as candidate fuels for solid oxide fuel cells (SOFCs). The thermodynamic analysis of both alternatives was undertaken considering that a SOFC stack operates by being fed by the equilibrium products of the steam reforming of each raw fuel. The comparison was made at atmospheric total pressure assuming low reforming factors (steam/fuel feed ratios) and SOFC operation in the temperature range of 800 to 1200 K. All operation conditions have been selected so that carbon deposition in the SOFC anode is thermodynamically impossible. Results were obtained in terms of the maximum theoretical electromotive force and the thermodynamic efficiency of total energy conversion. It was found that both fuels exhibit similar thermodynamic behavior when fed in a SOFC stack, and some qualitative advantages with respect to ethanol are discussed.
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A Thermodynamic approach of the aqueous-phase glucose reforming reaction for hydrogen production: A comparative study with glycerol and ethylene glycol Brouzgou, A.; Tsiakaras, P. (2011)In the present work is reported for the first time the thermodynamic analysis of aqueous-phase glucose reforming. The reaction has been studied at low temperature values (298-338K) and at atmospheric pressure with the ...
Gong, W.; Wu, Y.; Chen, T.; Feng, S.; Gaune-Escard, M.; Jin, Z. (2010)The thermodynamic properties and phase diagram of the RbBr-TbBr3 system were analyzed by means of the CALPHAD method in this work. Thermodynamic models were defined in order to describe the Gibbs energies of the individual ...
Brouzgou, A.; Keramida, T. H.; Efthymiou, J.; Tsiakaras, P. (2009)In the present work the thermodynamic analysis of aqueous - phase glucose reforming reaction has been studied. For the investigation purposes the temperature range of 0 - 100°C and atmospheric total pressure have been ...