Design and construction of avocado flesh oil Extractor/ Olupot Charles Joel

CHAPTER ONE
1.1 Background ,
1.2 Problem statement .
1.3 Justification
1.4 The purpose of the study
i..S. Objectives of the study
1.5.1 Main Objective
.1.5.2 Specific Objectives
1.6 The, scope of the study
1.7 Limitation (s) · ; : , ;: ;.: 3
2 CHAPTER TWO: LITERATURE REVIEW
2.} Avocado (Persea americana mil)
2.1.1 Structural parts 'of an avocado fruit
'2.2. Avocado (Persea Americana miljoil
2.2.1 Nutrient Composition of the avocado flesh
2.2.2 The chemical composition of avocado oil
2.2.3. 'Benefits of avocado. oil
2..3 Unit operations in avocado oil extraction
2.3-.1. Sorting
2.3.2 Cutting and mashing/blending
2 ..3..'3. Drying
2.3.4 Addition of'fiber to.the avocado (Rice fiber) s
2.3.5' Extraction of the oil
2A OTHER EXTRACTION METHODS USED
2.4 ..) Chemical extraction by solvents
2.4.2' Physical and mechanical extraction
2.5 Avocado oil properties.aiding its extraction
2.6 Preparation 'of material for extraction
3 CHAPTER THREE: METHODOLOGY
3.1 Machine description ·
.3..2 Machine working principle
3.3 Design of machine component
3..3.1 The Feeder/hopper
3.3.~2 .Angle ofn:pos~~.(er)

3,3.12 Longitudinal (tensile) and Hoop (circumferential) stress..
3.3. t J .Pulley. design
3.3.14 Design of the Frame..
3..4 Fabrication of the machine components
3.4.1 Material selection for the machine
3.5 Fabrication .of the prototype
.3.6 Performance evaluation of the. prototype
:"1..6.1 Efficiency of.the machine
3.6.2 Oil Yield output of the machine
3.7 Economic evaluation of the prototype
3.7:1 .Net present value.(NPV) method , .
.3..7.2 Profitability index
4. CHAPTER FOUR {RESULTS AND DISCUSSIONS
4,; Design of the. machine components
4.1.1· The feeder/hopper
4.1.2 Angle of repose
Determining the capacity of the avocado oil extractor
Design of the shaft
Weight of'the pulley
Bending moments ,
Determination of the Diameter of the· Screw Shaft
Determination of .the.weight of the shaft,
Torque.on therotating shaft ,
Power determination ,
Design of the barrel (Extraction chamber) ,
.t·ft· db pressure.
Longitudinal (tensile) and Hoop (circumferential) stress 28
4.1.14 Pulley ..design
4.1..15 Design of the Frame
4.2. Performance Evaluation of the Machine,
4'.2.1 Procedure followed during testing of the prototype
4.3 Fabrication of.the prototype
4.4 Extraction efficiency
4.5' Calculating the actual mass at low rate
4.6 Design efficiency ,
4.6.1 Oil Yield out put of the machine
:5 .CHAPTER FIVE: CONCLUSIONS AND RECOMMENDATIONS
5..1 Conclusions
5..2 Recommendations

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