A_plate L*D "Cell area"
D 1[m] "Cell depth"
d_pore 0.5[um] "Pore diameter in electrodes"
da 500[um] "Anode thickness"
dc 100[um] "Cathode thickness"
dg 1[mm] "Gas flow channel height"
di 500[um] "Interconnect thickness"
din 4*dg "Inlet region length"
dm 100[um] "Membrane thickness"
epsg 0.4 "Electrode porosity"
epsl 0.4 "Electrolyte volume fraction"
I_avg I_avg_init "Average cell current density"
I_avg_final 1[A/cm^2] "Final average current density in sweep"
I_avg_init 0.01[A/cm^2] "Initial average current density in sweep"
I_flow max(I_avg,0.1[A/cm^2])*A_plate "Total current for stoichiometric flow calculations"
I_tot I_avg*A_plate "Total cell current"
i0_ref_H2 1[A/m^2] "Reference exchange current density for hydrogen oxidation reaction"
i0_ref_O2 1[A/m^2] "Reference exchange current density for oxygen reduction reaction"
j_N2_cath j_O2_cath*x0_N2_cath/x0_O2_cath "Nitrogen molar flow rate"
j_NH3_an stoich_NH3*I_flow/(3*F_const) "Ammonia molar flow rate"
j_O2_cath stoich_O2*I_flow/(4*F_const) "Oxygen molar flow rate"
ka 11[W/m/K] "Anode thermal conductivity"
kappag_GDE 1e-10[m^2] "Gas permeability, gas diffusion electrode"
kc 6[W/m/K] "Cathode thermal conductivity"
ki 1.1[W/m/K] "Interconnect thermal conductivity"
km 2.7[W/m/K] "Electrolyte thermal conductivity"
L 20[mm] "Planar SOEC length"
M_aux RelMolecularMass_ammonia12 "Ammonia molar mass"
m_cath m_O2_cath+m_N2_cath "Cathode total mass flow rate"
m_N2_cath j_N2_cath*28[g/mol] "Nitrogen mass flow rate"
m_NH3_an j_NH3_an*17[g/mol] "Ammonia mass flow rate"
m_O2_cath j_O2_cath*32[g/mol] "Oxygen mass flow rate"
nu_aux FullerDiffusionVolume_ammonia11 "Ammonia Fuller diffusion volume"
S 1e8[m^2/m^3] "Electrode specific surface area"
stoich_NH3 1.25 "Ammonia flow stoichiometry"
stoich_O2 4 "Oxygen flow stoichiometry"
T_in 973[K] "Operating temperature"
Tb_aux NormalBoilingPointTemperature_ammonia13 "Ammonia boiling point temperature"
taug 3 "Electrode tortuosity"
W 3.7[mm] "Planar SOEC thickness"
w0_N2_cath x0_N2_cath*28[g/mol]/(x0_N2_cath*28[g/mol]+x0_O2_cath*32[g/mol]) "Initial mass fraction of N2 at inlet"
w0_NH3_an  0.95 "Initial mass fraction of NH3 at inlet"
w0_N2_an 0.01 "Initial mass fraction of N2 at inlet"
w0_H2O_an  0.01 "Initial mass fraction of H2O at inlet"
x0_H2_an 1-x0_N2_an-x0_H2O_an-x0_NH3_an "Initial mole fraction of H2"
x0_H2O_an 0.0001 "Initial mole fraction of H2O"
x0_N2_an 0.7498 "Initial mole fraction of N2"
x0_N2_cath 0.79 "Initial mole fraction of N2"
x0_NH3_an 0.0001 "Initial mole fraction of NH3"
x0_O2_cath 1-x0_N2_cath "Initial mole fraction of O2"