UNIT 1:
Post harvest engineering introduction, objectives and importance
Post harvest losses of cereals, pulses and oilseeds, Optimum stage of harvest
Threshing - traditional methods mechanical threshers - types- principles and operation
Moisture content - measurement - direct and indirect methods - moisture meters
Equilibrium moisture content
Engineering properties of agricultural produces
UNIT 2:
Psychrometry and its importance
Psychrometric charts and its uses
Drying – principles and theory of drying
Hot air drying , methods of producing hot air
thin layer and deep bed drying
Types of grain dryers selection – construction, operation and maintenance of dryers – Design of dryers
UNIT 3:
Principles - air screen cleaners – adjustments
cylinder separator-spiral separator
magnetic separator- colour sorter
UNIT 4:
Principles and operation – maize sheller
groundnut decorticator – castor sheller
material handling –belt conveyor
Material handling screw conveyor and chain conveyor
bucket elevators – pneumatic Conveying.
UNIT 5:
Paddy processing – parboiling of paddy – methods – merits and demerits
dehusking of paddy –methods – merits and demerits
constructional details – polishing
layout of modern rice mill - wheat milling – pulse milling methods
Millets and Winnower - oil seed processing.
