Table 2.
Effective moisture diffusivity (× 10−10 m2/s) during the drying of murta at different impregnation conditions
| Drying methods | Impregnation time (min) | Impregnation pressure (mbar) | ||
|---|---|---|---|---|
| 50 | 150 | 300 | ||
| Vacuum drying | 5 | 1.24 ± 0.01aA | 1.38 ± 0.04bA | 1.60 ± 0.08cA |
| 10 | 1.23 ± 0.06aA | 1.50 ± 0.07bB | 1.42 ± 0.05bB | |
| 15 | 1.25 ± 0.01aA | 1.69 ± 0.08bB | 1.75 ± 0.06bC | |
| Convective drying | 5 | 1.35 ± 0.00aA | 1.21 ± 0.04bA | 1.24 ± 0.06bA |
| 10 | 1.16 ± 0.07aB | 1.41 ± 0.08bB | 1.31 ± 0.05bAB | |
| 15 | 1.29 ± 0.01aC | 1.29 ± 0.08aAB | 1.44 ± 0.08bB | |
Lowercase letters (a, b and c) show the effect of impregnation time at constant pressure
Uppercase letters (A, B and C) show the effect of impregnation pressure at constant time