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18 17 16 15 14 13 12 11 10 9 8 MES1 Vac. MES2 MES3 MES4 V ac . Conv. Vac. Conv. V ac . Conv. Conv. Figure 43. Scattergram of final MC – E. obliqua Table 48. Final MC results – E. obliqua MES1 Vacuum Conventional 10.5 9.7 12.4 10.5 9.6 8.9 0.6 0.3 < 0.0001 A A 100 98 Final MC (%) MES4 Vacuum Conventional MES2 MES3 Vacuum Conventional Vacuum Conventional 10.5 15.4 9.3 0.9 0.725 10.5 11.6 9.4 0.5 9.6 9.8 11.1 11.0 8.5 0.5 0.0040 8.3 0.6 BB 98 100 BB 91 96 Average Maximum Minimum Standard deviation Significance (p) Grade quality (AS/NZS 4787 ) % permissible (AS 2796 ) 10.0 11.6 8.7 0.6 B 98 10.5 14.7 9.3 0.9 < 0.0001 B 99 For each trial, we recorded significant differences between the final MC gradient means of end- matched conventional and vacuum trials (Figure 44 and Table 49). All trials achieved acceptable grade qualities (A) for final MC gradient. As the MES3 vacuum boards were partially dried before testing the results cannot be directly compared with other trials. 4 MES1 MES2 V ac . Conv. V ac . 3 2 1 0 -1 -2 -3 Conv. MES3 V ac . Conv. MES4 V ac . Conv. Figure 44. Scattergram of MC gradient – E. obliqua Table 49. MC gradient results – E.obliqua 82 Evaluation of super–heated steam vacuum drying viability and development of a predictive drying model for Australian hardwood species – Final report MC gradient (%) Final MC (%)PDF Image | Evaluation of super-heated steam vacuum drying
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