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Drying times and vacuum kiln output Conventional drying time for this species from the green condition is reported to take approximately 59 days (Innes et al., 2008). The total drying times, including equalisation for the vacuum trials MES1, MES2, MES3 and MES4 were 36.3, 37.0, 38.4 and 36.7 days, respectively (Figure 49 to Figure 52). As the MES3 vacuum boards were partially dried before testing the results cannot be directly compared with other trials. Electrical interference caused the distorted output presented for trial MES4 in Figure 52. We have since remedied this. 90 80 70 60 50 40 30 20 10 0 900 800 700 600 500 400 300 200 100 0 -100 0 10 20 30 40 Time (days) MC core MC gradient EMC Temperature Pressure 80 70 60 50 40 30 20 10 0 -10 0 MC core 10 20 Time (days) MC gradient EMC 30 Temperature 900 800 700 600 500 400 300 200 100 0 40-100 Pressure Figure 49. Vacuum drying chart – MES1 trial Figure 51. Vacuum drying chart – MES3 trial 90 900 80 800 70 700 60 600 50 500 40 400 30 300 20 200 10 100 00 0 5 10 15 20 25 30 35 40 Time (days) MC core MC gradient EMC Temperature Pressure 80 1000 70 60 50 900 800 700 600 40 500 30 20 10 400 300 200 100 00 0 10 20 30 40 Time (days) MC core MC gradient EMC Temperature Pressure Figure 50. Vacuum drying chart – MES2 trial Figure 52. Vacuum drying chart – MES4 trial Evaluation of super–heated steam vacuum drying viability and development of a predictive drying model for Australian hardwood species – Final report 90 MC (%), Temperature (°C) MC (%), Temperature (°C) Pressure (mbar) Pressure (mbar) MC (%), Temperature (°C) MC (%), Temperature (°C) Pressure (mbar) Pressure (mbar)PDF Image | Evaluation of super-heated steam vacuum drying
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