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Keywords: heat transfer
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Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2012, 9(1): 011014.
Published Online: December 22, 2011
.... The other case is to compare the effects of heat transfer coefficients for different materials (ranging from 5 W/(m 2 · K ) to 50 W/(m 2 · K )) on the spatial non-homogeneity of stack voltage and output power density. Numerical results indicate that the degree of the non-uniformity of individual cell...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. December 2011, 8(6): 061017.
Published Online: September 28, 2011
... of the fuel cell components, mass flow rate of reactants, water production, heat output, heat transfer and the cooling system. This work is intended to facilitate material and process selection prior to manufacturing alternatives prior to capital investment for wide-scale production. The authors believe...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. December 2011, 8(6): 061016.
Published Online: September 28, 2011
... 2011 28 09 2011 28 09 2011 heat transfer manifolds mass transfer numerical analysis solid oxide fuel cells metal-supported solid oxide fuel cell manifold structure heat and mass transfer multi-physical simulation Fuel cells are electrochemical devices that convert...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. December 2011, 8(6): 061007.
Published Online: September 26, 2011
...A. Mirahmadi; H. Akbari This paper presents numerical modeling of molten carbonate fuel cells (MCFCs). The physical model consists of electrical, electrochemical, mass transport, conservation of momentums and heat transfer analyses. Numerical solution is only implemented to solution of a planer two...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. December 2011, 8(6): 061008.
Published Online: September 26, 2011
... induction heat transfer induction heating solid oxide fuel cells stainless steel temperature distribution tubular solid oxide fuel cell porous media induction heating start-up Solid oxide fuel cells (SOFCs) provide highly efficient means for conversion of the chemical energy of various...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. October 2011, 8(5): 051022.
Published Online: July 12, 2011
... due to the increased heat transfer. The inlet temperature may not affect the fuel conversion, if the reformer length is long enough. However, the heat transfer limitation can occur near the inlet when the inlet temperature is over 300 °C. The concentration of carbon monoxide becomes lower...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. June 2011, 8(3): 031011.
Published Online: February 22, 2011
..., and heat transfer mechanisms to investigate and optimize the design for performance as well as endurance. Various system configurations were developed, which included methods for fueling the second tier stacks in the series. System simulation studies using first principle mass and energy conversation laws...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Electrochem. En. Conv. Stor. April 2011, 8(2): 024501.
Published Online: December 1, 2010
... the negative aspects of large thermal gradients, Ohmic loss, and concentration loss by using a common heat transfer enhancement technique (i.e., cross-flow roughness). A numerical model developed with the commercial software FLUENT was used to compare the effects of four rib geometries, such as rib shape, rib...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. April 2011, 8(2): 021004.
Published Online: November 24, 2010
..., and voltammetry) provide information on the PEMFC aging and the performance evolution. Local conditions are computed through a dynamic stack model. The model takes into account transport phenomena, heat transfer, and semi-empirical electrochemical reactions and includes a meshing to calculate local conditions...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2011, 8(1): 011005.
Published Online: November 1, 2010
...Junxiang Shi; Xingjian Xue A comprehensive 3D computational fluid dynamics (CFD) model is developed for a bi-electrode supported cell (BSC) solid oxide fuel cell (SOFC). The model includes complicated transport phenomena of mass/heat transfer, charge (electron and ion) migration...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Electrochem. En. Conv. Stor. December 2010, 7(6): 064501.
Published Online: August 17, 2010
... gas, which affected the heat transfer rate from the burner to the reformer. Reactor temperature profiles, heat transfer rates, fuel conversions, and hydrogen yields were calculated. In addition, the fuel feed ratio between the burner and the steam reformer was manipulated as an operating parameter...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. October 2010, 7(5): 051018.
Published Online: July 20, 2010
... near the inlet due to the activated oxidation reaction. If the temperature of the reactor is low, a heat transfer limitation exists because the endothermic reaction heat is not supplied. For an inlet temperature of 300 ° C , the results suggest that the heat transfer limitation was reached...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. October 2010, 7(5): 051004.
Published Online: July 14, 2010
... heat transfer mass transfer solid oxide fuel cells steam solid oxide fuel cells biogas indirect internal reforming thermal management High-temperature solid oxide fuel cells (SOFCs) are one of the most promising candidates for the next generation of distributed power generation...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. June 2010, 7(3): 031017.
Published Online: March 16, 2010
..., it is necessary to couple the heat and mass transfer to accurately model the species conversion of the reformate stream. The reactions in the SOFC contribute much less to the temperature distribution than in the reformer and therefore the heat transfer in the SOFC is not necessary to model. A packed bed reactor...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2010, 7(1): 011022.
Published Online: November 11, 2009
.... Our analysis is supported by simulations. The results presented in this paper can be applied in predicting steady-state conditions and certain transient behaviors and will be useful in control development for SOFC systems. electrochemistry heat transfer mass transfer reaction kinetics solid...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2010, 7(1): 011002.
Published Online: October 5, 2009
.... Isothermal and adiabatic walls are chosen as the different boundary conditions in order to simulate the real situation, which lies somewhere in between. In the situation where adiabatic walls are assumed, the result shows that heat convection dominates the heat transfer process. However, heat conduction...