The Principle and Application of Tray Dryer

The tray dryers are also called cabinet dryers. There are horizontally arranged trays and the material is spread out on that trays for drying. The air is heated using conduction or radiation and inserted into the trays. The heated air is useful to remove the moist vapors.

Principle:

The dryer chamber contains trays which are horizontally arranged in a column. The wet material to be placed on these trays in thin layers and with the use of circulating fan, the heated air is inserted vertically on the trays. The exhaust fan removes the wet air out of the chamber as fresh air is inserted. The air is equally distributed within the dryer with perforated plywood floor. The air does not bypass from the trays as they tightly fit into the cabinet.

Application:

The tray dryers are commonly used to dry food materials and it will dry on the food on the base of food type and the desired final moisture. Normally, it will take 10 or even 20 hours to dry the wet food products.

Tray Dryer