| General note |
'I:AB~E OF CONTENTS<br/>ABSTRACT ..;, , ·i<br/>DECLARATION ..~.: , , \ ii<br/>APPROVAL AL , ; , iii<br/>. ' . '.. .' '.<br/>ACl<.ACKNOWLEDGEMENT , , , , , -r: : ••.••.<br/>Y<br/>CHAPTER ONE: Introduction , « , •• ;., , •••••••••<br/>4<br/>1..0 Introduction , , ,.· i 4<br/>1..1 Background of the study , , ;., " 4<br/>1.2 Problem statement ,.,. ; , ; , , 5<br/>1..., 1 M '. "b" .. 6 ....). aln<br/>0 jecnve , : , , , .<br/>1 3. peel c 0 .~ec.. ? S· ifi .bi ti . ves : :, , , ; , ..<br/>6<br/>1:4 Justification ~ ,<br/>6<br/>1.5 Purpose of Study , · · ~.i~<br/>6<br/>1.6 Scope of Study , , , " ; · ; ; ;.·6<br/>CHAPTER TWO:. LITERATURE. REVIEW , , .: 7.<br/>·2.0 Literature review , 7<br/>2.1 Carrot Profile .: ; ~ ,<br/>7<br/>2.1.1 Carrot production in Uganda 7<br/>2.1.2 Carrot varieties.. ~ ,.;, ,•..., ,<br/>T<br/>2.1.3 Food value of.Carrots · ; ·.·.,..~ , 8<br/>2.1.4<br/>Nutritional and health benefits of carrots , , , , 9'<br/>'2'.2 Post Harvest Operations on carrots : ~ :<br/>U<br/>2.3 Overview of Existing Carrot Chopping.Methods , -: , 1.1<br/><br/>23.·1 Hand chopping using a knife · ; ...; 7 , •• ~ 11<br/>23.2 Chopping with a carrot grater , ;•............, p<br/>2.3'.3 Manually operated' carrot chopping machine., ......•........................ " 1.2<br/>2.3.4 Electrical Carrot chopper ..; ;., ; "~ ~., 13<br/>2..3:5:· Motor driven carrot chopping machine , ~ 13<br/>_.; '.. uttmg : :.;~ , , : : ~ , :..,............................. . ? 4'C ... . '14<br/>2.4.1 Cutting geometric principles , , 14<br/>2.4;.1 Mechanics of cutting ~ : :,.: : ~ r , 15<br/>2.5. Material Selection .: . , 15<br/>CHAPTER ~: METHODOLOGY ~.~.!•••••••••~ ~..~iI!";•.•~ ~ ~•••••••••• " ~ •••••• ~. 1.7<br/>3.0. Methodology ,"' ' "••.~..•~.:~..........••...6;~ ~.ri••: ~ ,.,•••••• ~•••••••••••••.••••••• ~••••••• ;~. 17<br/>3.1 specific objective 1:'Design of the Prototype Components 17<br/>3.'1.1 Design considerations " ~ 17<br/>3 1 ') D "'.' f prototype. components ,' , .<br/>3.1.3 Power requirements of the machine , , 22<br/>3')._ peCI C 0 S ifi bie ". jectrve z: rototype a ncanon ~. ssem Pro . Fabri ." d A 'bIy ~ ~ :., , -''''' ??<br/>3.2.1 Materials selection ; " 24<br/>-3.2.6 Mode of operation of the machine ~ , ,.., ~ ~ 24<br/>3j Specific objective J: Performance Evaluation , ~•..•.....::. 25<br/>'" .~ bl . 4' .).4 specific objective Economic Evaluation 1 • . 01f the Prototype _76<br/>4.0 CHAPTER FOUR: RESULTS AND DISCUSSION 27<br/><br/>4.1 RESULTS AND DISCUSSION ~.....•....•.............•..•... ~ ; 27<br/>4.1.1 Design of collecting hopper and inlet hoppers 27<br/>4.1.2 Design of the ..Cutting Blade ; ; ; ; ~......•....; 28<br/>4.1.3.:Design of Driven pulley ;..•.....•.•~ ~ : 29<br/>4?F._ oree requirement .'. 0.·fth. e·mac. achinen~ ; , ; "9;t.. .4.3 Power delivered by the shaft 30<br/>4,4 The shaft design ~ ~ , :3 t<br/>4.4.1 Determining the minimum diameter of the Shaft ; 31<br/>4.._4 ? Termination ". o.f·ang1eo.. f twist . 0ftl. re shaft , .J._ """<br/>4.4.3 The factor of safety of the designed shaft 33<br/>4.5·Belt Selection ., , , 33<br/>4.5; 1Reasons for choosing the v-belt 34<br/>.4.·.6 Design -.offrame., _ , , ·•......: 4. 3·4<br/>4.7 Designof the Cuttingblades , , , ~ .' , J6<br/>4.9 Performance evaluation of the machine 37<br/>4.9.1 Testing of the. prototype ~ ~ ; ~ ·; 37<br/>4.10 Theoretical machine efficiencv~<br/>..<br/>~<br/>.. ; .. 38<br/>4.11 Chopping efficiency ; ; 38·<br/>4.12 Economic evaluation of'the prototype ~ 40<br/>4.12.1 Master budget for production of the carrot chopper 40<br/>4 ..12 .2.·;Salvage value , ~ 4·1<br/>4: 1.1.3 Depreciation ,~ , ~.•..•......... ~ 4.1<br/>4 ~1_." 4.T·Ou;u ·......:1· annul a1 operating.cost .• . r ~ :.. 4·1.. 4..12.5 Total revenues · ~.. 41<br/>4.12; 6 Comparison between machine method and hand .knife method .. ! ~ 4 J |
