Comparison of Heat-Fin Materials and Design of a Common-Pressure-Vessel Nickel-Hydrogen Battery

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Journal of The Electrochemical Society, ISSN: 0013-4651, Vol: 139, Issue: 12, Page: 3492-3499

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Kim, Junbom; White, Ralph E
The Electrochemical Society
Materials Science; Energy; Physics and Astronomy; Chemistry; cells (electric); heat transfer; temperature distribution; modelling; axial symmetry; finite element analysis; materials testing; thermal conductivity; specific heat; density; Chemical Engineering
article description
A two-dimensional, axisymmetric, and time-dependent thermal model was developed to study the temperature behavior of the cylindrically shaped common-pressure-vessel nickel-hydrogen cell. A differential-energy-balance equation was used as the governing equation. A finite-element software package called PDE/Protran was used to solve this model. Different materials such as copper, copper beryllium, silver, and sterling silver were compared as heat-fin materials. The heat-fin geometry (thickness and height) and spacing were tested to find a design that yielded an acceptable temperature gradient inside a nickel-hydrogen cell. Pulse heat-generation rates were tested and correlated with the time-dependent heat-generation eases. © 1991, The Electrochemical Society, Inc. All rights reserved.