Define the Basic Types of Drying Process?
Primarily, there are three basic types of drying process:
a) Sun drying and solar drying;
b) Atmospheric drying including batch (kiln, tower and cabinet dryers) and continuous (tunnel, belt, belt-trough, fluidised bed, explosion puff, foam-mat, spray, drum and microwave);
c) Sub-atmospheric dehydration (vacuum shelf/belt/drum and freeze dryers).
The scope is expanded to include low temperature, low energy process like osmotic dehydration.