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.