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MODELING A METAL HYDRIDE HYDROGEN STORAGE SYSTEM. Presented by Apurba Sakti EGEE 520 1 st May, 2007. Introduction. Hydrogen storage in metal hydride bed Storage through adsorption and desorption Conduction, convection and diffusion 2D axi-symmetric model. [1]. - PowerPoint PPT Presentation
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MODELING A METAL HYDRIDE HYDROGEN
STORAGE SYSTEM
Presented by Apurba SaktiEGEE 520
1st May, 2007
Introduction Hydrogen storage in metal
hydride bed Storage through adsorption and
desorption Conduction, convection and
diffusion 2D axi-symmetric model
[1]
1. Veziroglu et al. Int. Journal of Energy Res. 2003; 27:1027-1038
Governing Equations
)( gg
g Padrgk
V
mVgg )(
r
TvC
z
T
zr
Tr
rrt
TC pgeeepg
)()(
1)( )]([ pspg
opg CCTHm
z
TwC
Energy equation
psspggep CCC )1()(
sge )1(
Where,
Momentum balance equation
tg )(
div
Hydrogen Mass Balance
))(ln()exp( ssseq
g
s
aa P
P
RT
ECm
Reaction Kinetics
Formulation
Constitutive Relation:
Darcy’s law
Conduction, Convection and Diffusion
Initial Temperature 293K
Axial symmetry
Hydrogen Charge
Cooling Fluid
Coolin
g
Fluid
Solution
Pressure
Temperature
Concentration
Concentration
Validation
Hydride formation
Temperature Profile
[1]
1. Veziroglu et al. Int. Journal of Energy Res. 2003; 27:1027-1038
Parametric Study
Temperature (*0.1)
Temperature (*10)
Conclusion Temperature and Concentration profiles modeled
(results agree with literature) Cooling fluid improves hydride formation Future work will include building on this
groundwork to make the model represent more accurately.