Schematic diagram of the drying apparatus. (IMAGE)
Caption
Samples were placed on the sample station for MART-DA drying. The circulated air was heated and driven by the enclosure heater and fan. The temperature of dry air was measured using a temperature sensor and controlled by a proportional–integral–derivative (PID) controller. The relative humidity of the system was controlled by a cold trap. A Peltier module was applied with a heat sink. Moisture was removed via condensing and freezing on the heat sink.
Credit
Yejiong Yu et al.
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License
CC BY-NC-ND