Nomenclature Ap | Particle area | mm2 |
| As | Superficial particle area | m2/g |
| Cl | Liquid concentration | kg/m3 |
| Cv | Vapor concentration | kg/m3 |
| dp | Pore diameter | nm |
| Deff,G | Effective global diffusion | m2/s |
| Deff,l | Effective liquid diffusion | m2/s |
| Deff,k | Effective Knudsen diffusion | m2/s |
| Deff,s | Effective surface diffusion | m2/s |
| Deff,v | Effective vapor diffusion | m2/s |
| Df | Feret diameter | mm |
| Dp | Particle diameter | mm |
| Dv,0 | Vapor diffusion | m2/s |
| D0 | Exponential factor | m2/s |
| Ea | Activation energy | kJ/mol |
| k | Coupling coefficients | - |
| Kn | Knudsen number | - |
| Ks | Permeability | m2 |
| L | Thickeness | m |
| P | Pressure | Pa |
| PMw | Molar weight of water | g/mol |
| R | Ideal gas constant | J/molK |
| S | Saturation | - |
| t | Drying time | min |
| Tg | Gas temperature | K |
| vp | Pore volume | cm3 |
| X | Moisture content | kg/kg |
| Xeq | Equilibrium moisture content | kg/kg |
| Greek | Letters | |
| Г | Perimeter | mm |
| δ | Constricivity | - |
| ε | Porosity | - |
| μg | Gas viscosity | Nm/s |
| ρap | Apparent density | kg/m3 |
| ρg | Gas density | kg/m3 |
| ρr | Real density | kg/m3 |
| τ | Tortusity | - |
| ϕ | Sphericity | - |