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Keywords: heat transfer
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Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. August 2021, 18(3): 030905.
Paper No: JEECS-20-1181
Published Online: April 21, 2021
... of the past researches have focused on methods of reducing temperature rise. This paper mainly studies how to reduce the temperature deviation of the battery pack while ensuring heat dissipation conditions. This paper designs a mini-channel liquid cooling BTMS with a side cover to improve heat transfer...
Journal Articles
Article Type: Research-Article
J. Electrochem. En. Conv. Stor. August 2014, 11(4): 041004.
Paper No: FC-13-1128
Published Online: March 13, 2014
...Hie Chan Kang; Hyejung Cho; Jin Ho Kim; Anthony M. Jacobi Figures 7 , 8 , and 9 show comparisons of the air-side pressure drop, heat transfer coefficient, and f and j factors of the present heat exchangers. The measured pressure drops of the prototype multitube heat...
Journal Articles
Article Type: Review Articles
J. Electrochem. En. Conv. Stor. April 2014, 11(2): 020801.
Paper No: FC-13-1102
Published Online: December 10, 2013
..., high reliability, and excellent durability. From both modeling and experimental aspects, this article first highlights the effect of clamping load on the electron transfer, mass (water and reactant gases) transfer, and heat transfer in a PEMFC stack and then puts the attentions on the optimization...
Journal Articles
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
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2012, 9(1): 011005.
Published Online: December 19, 2011
... dimensions and heat transfer coefficients. The membrane properties studied include membrane vapor transfer properties described in the Arrhenius’ equation. A governing equation to link the non-minimum phase zero and the parameters is developed in this paper. This equation shows that the non-minimum phase...
Journal Articles
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
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
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
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. December 2011, 8(6): 061008.
Published Online: September 26, 2011
... , New York . 11 Kar , K. , and Dybbs , A. , 1982 , “ International Heat Transfer Coefficients in Porous Media ,” Heat Transfer in Porous Media , J. V. Beck and L. S. Yao , eds., HTD-22 , ASME New York . 12 Holman , J. P. , 1981 , Heat Transfer , McGraw...
Journal Articles
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
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
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
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
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
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
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. October 2010, 7(5): 051018.
Published Online: July 20, 2010
... decreased due to the heat transfer limitation reached when the inlet temperature was low. The temperature increased for high OCRs due to the activated full combustion reaction. The reforming efficiency increased in direct proportion to the OCR when the OCR was below 0.7 but the decrease was inversely...
Journal Articles
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. October 2010, 7(5): 051004.
Published Online: July 14, 2010
... electrochemistry heat transfer mass transfer solid oxide fuel cells steam 2010 American Society of Mechanical Engineers ...
Journal Articles
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
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2010, 7(1): 011022.
Published Online: November 11, 2009
... pressure, Pa Q ̇ net rate of heat transfer into a solid or gaseous volume, W R cell internal cell resistance, Ω   m 2 R u universal gas constant, 8.314   J / mol   K r I , r II , r III...
Journal Articles
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...