Slide 1

Jangam, Mujumdar - Classification and Selection

Figure 3.1. Classification of dryers

Fluidized Bed/spouted bed

Vibrated bed dryer

Vacuum tray
Agitated bed
Rotary batch

Atmospheric

tray

Microwave

(Atmospheric)

Microwave

(Vacuum)

Freeze

Solar

IR

Drum

(Atmospheric)

Drum

(Vacuum)

Plate

Vacuum

Agitated bed

Indirect rotary

Band

(Through-Flow)

Band

(Cross-flow)

Band

(Impingement)

Tunnel

Spin Flash

Conveyor

Microwave

(Atmospheric)

Microwave

(Vacuum)

Freeze

Solar

IR

Radio frequency

WMFB

PFFB

Vibrated fluidized bed Pneumatic

Cascading rotary

Rotary Louvre

Spray

Mode of Operation

Batch Dryers (^) Continuous Dryers
Layer Type
Dispersion Type (^) Dispersion Type
Layer Type
Contact Convective^ Special^ Conductive Convective Special
Drying of Foods, Vegetables and Fruits