| Types.DiffusionResistance | Rb | | Diffusion equivalent resistance |
| Types.DiffusionResistance | RbAnode | | Diffusion equivalent resistance anode side |
| Types.DiffusionResistance | RbCathode | | Diffusion equivalent resistance cathode side |
| Types.DiffusionCoefficient[nX - 2] | D_H2_i | | Effective diffusivity coefficient of H2 with respect to species CO2, CO, CH4, C2H6, C3H8, O2, N2 and Ar |
| Types.DiffusionCoefficient[nX - 2] | D_H2O_i | | Effective diffusivity coefficient of H2O with respect to species CO2, CO, CH4, C2H6, C3H8, O2, N2 and Ar |
| Types.DiffusionCoefficient[nX - 1] | D_O2_i | | Effective diffusivity coefficient of O2 with respect to species H2O, H2, CO2, CO, CH4, C2H6, C3H8, N2 and Ar |
| Types.DiffusionCoefficient | D_H2_H2O | | Effective diffusivity coefficient of H2 with respect to H2O |
| Types.DiffusionCoefficient | D_H2_Rest | | Effective diffusivity coefficient of H2 with respect to equivalent third component (CO2, CO, CH4, O2, N2 and Ar) |
| Types.DiffusionCoefficient | D_H2O_Rest | | Effective diffusivity coefficient of H2O with respect to equivalent third component (CO2, CO, CH4, O2, N2 and Ar) |
| Types.DiffusionCoefficient | D_O2_Rest | | Effective diffusivity coefficient of O2 with respect to equivalent third component (H2O, H2, CO2, CO, CH4, N2 and Ar |
| Types.DiffusionCoefficient | Dk_H2 | | Effective Knudsen diffusivity coefficient of H2 |
| Types.DiffusionCoefficient | Dk_H2O | | Effective Knudsen diffusivity coefficient of H2O |
| Types.DiffusionCoefficient | Dk_O2 | | Effective Knudsen diffusivity coefficient of O2 |
| Types.Pressure | pAnode | | Absolute pressure anode channel side |
| Types.Pressure | pCathode | | Absolute pressure cathode channel side |
| Types.Pressure[nX] | pXa | | Partial pressures anode channel side |
| Types.Pressure[nX] | pXc | | Partial pressures cathode channel side |
| Types.Temperature | T | | Temperature PEN |
| Types.Temperature | Temp | | Temperature PEN |
| Types.MoleFraction[nX] | Xa | pXa/pAnode | Bulk mole fraction species anode chaneel side |
| Types.MoleFraction[nX] | Xc | pXc/pCathode | Bulk mole fraction species cathode chaneel side |
| Types.MoleFraction[nX - 2] | Xa_in_Rest | Xa[3:end]/Xa_Rest | Mole fractions with respect to anodic mix without H2 and H2O |
| Types.MoleFraction | Xa_Rest | sum(Xa[3:end]) | Overall mole fraction of species other than H2 and H2O |
| Types.MoleFraction[nX - 1] | Xc_in_Rest | cat(1, Xc[1:7], Xc[9:10])/Xc_Rest | Mole fractions with respect to carhodic mix without O2 |
| Types.MoleFraction | Xc_Rest | 1 - Xc[8] | Overall mole fraction of species other than O2 |
| Types.CollisionIntegral[nX] | collIntegral_H2_i | | Collision integral between H2 and species i at temperature T |
| Types.CollisionIntegral[nX] | collIntegral_H2O_i | | Collision integral between H2O and species i at temperature T |
| Types.CollisionIntegral[nX] | collIntegral_O2_i | | Collision integral between O2 and species i at temperature T |