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Table I.
Effects of inlet gas temperatures of fluidized bed freeze dryer on moisture content, particle size and drying times. The error data represent 1 SD from the mean.
| Inlet gas temperature (°C) | Fluidized bed freeze dryer pressure (bar) | Average moisture content of final product (wet basis) (%) | Sauter mean particle diameter (μm) | Drying time (s) |
|---|---|---|---|---|
| −10 ± 1.0 | 0.1 | 8.1 ± 2.27 | 480 ± 53 | 3600 |
| −15 ± 1.0 | 0.1 | 9.5 ± 0.43 | 393 ± 75 | 3900 |
| −30 ± 1.0 | 0.1 | 14.0 ± 0.61 | 412 ± 4 | 6000 |