Vacuum microwave drying is a low -temperature dehydration process. According to physics decreased pressure will decreased boiling point, the water in the material can be evaporate by very lower temperature. First use vacuum pump to make vacuum drying chamber to vacuum condition, then open the microwave to heat the material, finally use condenser to collect the removed steam until the material is dried. The whole process occurs under low temperature and low pressure, compare to vacuum freeze drying, the dried quality is almost the same but drying time is much shorter and use much less energy. .The principle of Nasan microwave dryer is the wave energy transfer to water molecules heat energy in the vacuum condition to get the fastest and the best dried production.
This small laboratory scale microwave vacuum dryer could be different test purpose for every material, or do small scale drying producing.
