Official Journal of the Japan Wood Research Society
Table 3 Average drying rate of Douglas-fir RF/VP drying according to the previous moisture content and stacking position
Douglas-fir | Drying rate (%/day) | |||||
|---|---|---|---|---|---|---|
MC > 30% | MC ≤ 30% | MC ≤ 25% | MC ≤ 20% | MC ≤ 15% | MC ≤ 10% | |
Layer-1 | 11.2 | 4.9 | 5.3 | 4.3 | 4.8 | 1.8 |
Layer-2 | 5.9 | 4.2 | 4.3 | 4.3 | 5.2 | 2.2 |
Layer-3 | 7.7 | 6.7 | 5.4 | 4.9 | 5.0 | 2.5 |
Layer-4 | 5.4 | 5.4 | 4.7 | 4.7 | 4.9 | 1.9 |
Layer-5 | 7.1 | 5.4 | 6.5 | 4.9 | 5.4 | 0.8 |
Layer-6 | 4.3 | 5.2 | 5.1 | 4.9 | 4.8 | – |
Layer-7 | 7.9 | 5.2 | 5.4 | 4.4 | 4.9 | – |
Layer-8 | 4.3 | 5.2 | 4.7 | 3.6 | 4.5 | – |
Layer-9 | 6.1 | 4.0 | 3.6 | 4.3 | 1.4 | – |
Layer-10 | 1.5 | 4.7 | 4.9 | 2.0 | – | – |
Average | 5.5 | 5.0 | 5.0 | 4.2 | 4.3 | 1.4 |