<<<<<<< HEAD rgpv syllabus BTech Grading System 5th Semester Microsoft Word - V Sem AT_Sy

RAJIV GANDHI PROUDYOGIKI VISHWAVIDYALAYA, BHOPAL


New Scheme Based On AICTE Flexible Curricula Agriculture Engineering, V-Semester

AT501- Unit Operation in Post Harvest Management


Unit I Introduction

Post-harvest management introduction –objectives –post harvest losses of cereals, pulses and oilseeds – importance - 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.


Unit II Psychrometry and Drying

Psychrometry – importance – Psychometric charts and its uses – Drying – principles and theory of drying – thin layer and deep bed drying – Hot air drying – methods of producing hot air – Types of grain dryers – selection – construction, operation and maintenance of dryers – Design of dryers


Unit III Cleaning and grading

Principles - air screen cleaners – adjustments - cylinder separator-spiral separator – magnetic separator-colour sorter-inclined belt separator – length separators - effectiveness of separation and performance index.


Unit IV Shelling and handling

Principles and operation – maize sheller, husker sheller for maize – groundnut decorticator – castor sheller – material handling –belt conveyor –screw conveyor – chain conveyor – bucket elevators – pneumatic conveying.


Unit V Paddy and crop processing

Paddy processing – parboiling of paddy – methods – merits and demerits – dehusking of paddy – methods – merits and demerits – rice polishers –types – constructional details – polishing –layout of modern rice mill - wheat milling – pulse milling methods – oil seed processing.


Practicals:

Determination of moisture content – determination of engineering properties of grain- testing of paddy thresher-paddy winnower. Testing of groundnut decorticator-maize Sheller - evaluation of thin layer drier- study of LSU drier. Determination of oil content of oilseeds Determining the efficiency of bucket elevator and screw conveyor-study of paddy parboiling drum-evaluation of shelling efficiency of rubber roll sheller-study of cone polisher-visit to modern rice mill – visit to pulse milling industry.


Learning Outcome:

On completion of this chapter the students will understand different post harvest losses of agricultural and horticultural crops, their prevention and different unit operations involved after harvest for value addition to the produce.


Suggested Reading:

======= rgpv syllabus BTech Grading System 5th Semester Microsoft Word - V Sem AT_Sy

RAJIV GANDHI PROUDYOGIKI VISHWAVIDYALAYA, BHOPAL


New Scheme Based On AICTE Flexible Curricula Agriculture Engineering, V-Semester

AT501- Unit Operation in Post Harvest Management


Unit I Introduction

Post-harvest management introduction –objectives –post harvest losses of cereals, pulses and oilseeds – importance - 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.


Unit II Psychrometry and Drying

Psychrometry – importance – Psychometric charts and its uses – Drying – principles and theory of drying – thin layer and deep bed drying – Hot air drying – methods of producing hot air – Types of grain dryers – selection – construction, operation and maintenance of dryers – Design of dryers


Unit III Cleaning and grading

Principles - air screen cleaners – adjustments - cylinder separator-spiral separator – magnetic separator-colour sorter-inclined belt separator – length separators - effectiveness of separation and performance index.


Unit IV Shelling and handling

Principles and operation – maize sheller, husker sheller for maize – groundnut decorticator – castor sheller – material handling –belt conveyor –screw conveyor – chain conveyor – bucket elevators – pneumatic conveying.


Unit V Paddy and crop processing

Paddy processing – parboiling of paddy – methods – merits and demerits – dehusking of paddy – methods – merits and demerits – rice polishers –types – constructional details – polishing –layout of modern rice mill - wheat milling – pulse milling methods – oil seed processing.


Practicals:

Determination of moisture content – determination of engineering properties of grain- testing of paddy thresher-paddy winnower. Testing of groundnut decorticator-maize Sheller - evaluation of thin layer drier- study of LSU drier. Determination of oil content of oilseeds Determining the efficiency of bucket elevator and screw conveyor-study of paddy parboiling drum-evaluation of shelling efficiency of rubber roll sheller-study of cone polisher-visit to modern rice mill – visit to pulse milling industry.


Learning Outcome:

On completion of this chapter the students will understand different post harvest losses of agricultural and horticultural crops, their prevention and different unit operations involved after harvest for value addition to the produce.


Suggested Reading:

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