TEZA DE DOCTORAT - Universitatea Transilvania

TEZA DE DOCTORAT - Universitatea Transilvania TEZA DE DOCTORAT - Universitatea Transilvania

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Rezumatul tezei de doctorat CONTENT page page abstr. thesis SPECIFIC NOTATIONS 7 9 PREFACE 13 13 INTRODUCTION 17 CHAPTER 1. GENERALIZATION 16 21 1.1. Current state of agriculture in Romania 16 21 1.2. The importance of irrigation in agriculture. Current status of irrigation in Romania 17 27 1.3. Irrigation need 17 29 1.4. Functions of irrigation 18 30 1.5. Irrigation system 18 30 1.6. Types of improvements for irrigations 19 31 1.7. Conclusions 33 CHAPTER 2. WATERING METHODS 19 35 2.1. Classification of watering methods 20 35 2.2. Criteria underlying the choice of watering methods 20 36 2.3. Watering by submersion 37 2.4. Watering through surface drainage 38 2.5. Watering by sprinkling. Features of watering by sprinkling 21 38 2.6. Quality indices of watering by sprinkling 21 39 2.7. Correlation of sprinkling characteristics with land factors 22 39 2.8. Efficiency of sprinkling watering 23 41 2.9. Underground watering 24 42 2.10. Conclusions 43 CHAPTER 3. IRRIGATION REGIME 24 45 3.1. Relations between soil, water and plant 24 45 3.2. Results of irrigation waters 25 47 3.2.1. Theoretical Considerations 47 3.2.2. Types of water balance in irrigated soil 48 3.3. The amount of water required for irrigation 26 50 3.4. Rules and watering deadlines 27 51 3.5. Conclusions 53 CHAPTER 4. GENERAL PRESENTATION OF IRRIGATION INSTALLATIONS WITH DRUM AND HOSE 27 54 4.1. Installation for irrigation with drum and hose IATF 300 28 54 4.2. The functioning of the irrigation installation with drum and hose IATF 300 driven by turbine 28 60 4.3. Installation for irrigation by sprinkling with drum and hose manufactured by IRIDEX GROUP and CERITEX Braşov 30 63 4.4. Installation for irrigation by sprinkling with drum and hose manufactured by IRRIFRANCE company (France) 31 66 ] Autor: ing. Mihail NEDELCU Conducător ştiinţific: Prof.univ.dr.ing. Ioan CÂNDEA - 6 -

Rezumatul tezei de doctorat 4.5. Installation for irrigation by sprinkling with drum and hose manufactured by BAUER company 32 69 4.6. Installation for irrigation by sprinkling with drum and hose manufactured by FERBORAIN and TURBOCAR (Italy) 33 74 4.7. Conclusions 80 CHAPTER 5. TIMELINESS APPROACH RESEARCH ON IMPROVING IRRIGATION INSTALLATIONS BY SPRINKLING WITH DRUM AND HOSE 34 82 CHAPTER 6. THEORETICAL RESEARCH ON IRRIGATION SPRNKLING INSTALLATIONS WITH DRUM AND HOSE 35 85 6.1. Theoretical research on the hydraulic installation 35 85 6.2. Theoretical research on the cart for distribution of water 36 95 6.3. Researches on stability in movement of the mounting support and transportationcarriage of the sprinkling installations with drum and flexible pipe 39 101 6.3.1. Introduction 39 101 6.3.2. Study on the mechanical model of the sprinkler carriage 40 102 6.4. Theoretical research on the polyethylene hose 41 106 6.5. Theoretical research on the economic parameters of sprinkling installations with drum and hose 43 109 6.6. Sprinklers 43 113 6.6.1. Generalities 43 113 6.6.2. The work of rotary sprinklers 44 114 6.6.3. Indicii de lucru ai aspersoarelor 45 117 6.6.4. Constructive types of rotary sprinklers 47 122 6.6.5. Calculation of forces for sprinklers with horizontal movement 49 133 6.7. Studies about the kynematics of a particle from the water flow running through the spraying tube of the sprinkling device 50 138 6.7.1. Introduction 50 138 6.7.2. Kinematics analysis of the spraying assambly 50 139 6.7.3. Dynamic study of water particle motion for oblique version of rising pipe 51 140 6.7.4. Dynamic study of water particle motion for horizontal version of rising pipe 52 141 6.7.5. Study of trajectory of water jet coming out from the sprinkler 53 143 6.8. Conclusions 145 CHAPTER 7. METHOD, APPARATUS AND TYPES OF EQUIPMENT USED TO EXPERIMENTS 54 149 7.1 Methods and apparatus used in experiments 54 149 7.2 Experimental researches on the technologies and installations for irrigation by sprinkling with hose and drum 56 159 7.3 Conclusions 178 ] Autor: ing. Mihail NEDELCU Conducător ştiinţific: Prof.univ.dr.ing. Ioan CÂNDEA - 7 -

Rezumatul tezei de doctorat<br />

CONTENT<br />

page page<br />

abstr. thesis<br />

SPECIFIC NOTATIONS 7 9<br />

PREFACE 13 13<br />

INTRODUCTION 17<br />

CHAPTER 1. GENERALIZATION 16 21<br />

1.1. Current state of agriculture in Romania 16 21<br />

1.2. The importance of irrigation in agriculture.<br />

Current status of irrigation in Romania 17 27<br />

1.3. Irrigation need 17 29<br />

1.4. Functions of irrigation 18 30<br />

1.5. Irrigation system 18 30<br />

1.6. Types of improvements for irrigations 19 31<br />

1.7. Conclusions 33<br />

CHAPTER 2. WATERING METHODS 19 35<br />

2.1. Classification of watering methods 20 35<br />

2.2. Criteria underlying the choice of watering methods 20 36<br />

2.3. Watering by submersion 37<br />

2.4. Watering through surface drainage 38<br />

2.5. Watering by sprinkling. Features of watering by sprinkling 21 38<br />

2.6. Quality indices of watering by sprinkling 21 39<br />

2.7. Correlation of sprinkling characteristics with land factors 22 39<br />

2.8. Efficiency of sprinkling watering 23 41<br />

2.9. Underground watering 24 42<br />

2.10. Conclusions 43<br />

CHAPTER 3. IRRIGATION REGIME 24 45<br />

3.1. Relations between soil, water and plant 24 45<br />

3.2. Results of irrigation waters 25 47<br />

3.2.1. Theoretical Considerations 47<br />

3.2.2. Types of water balance in irrigated soil 48<br />

3.3. The amount of water required for irrigation 26 50<br />

3.4. Rules and watering deadlines 27 51<br />

3.5. Conclusions 53<br />

CHAPTER 4. GENERAL PRESENTATION OF IRRIGATION<br />

INSTALLATIONS WITH DRUM AND HOSE 27 54<br />

4.1. Installation for irrigation with drum and hose IATF 300 28 54<br />

4.2. The functioning of the irrigation installation<br />

with drum and hose IATF 300 driven by turbine 28 60<br />

4.3. Installation for irrigation by sprinkling with drum and hose<br />

manufactured by IRI<strong>DE</strong>X GROUP and CERITEX Braşov 30 63<br />

4.4. Installation for irrigation by sprinkling with drum and hose<br />

manufactured by IRRIFRANCE company (France) 31 66<br />

]<br />

Autor: ing. Mihail NE<strong>DE</strong>LCU Conducător ştiinţific: Prof.univ.dr.ing. Ioan CÂN<strong>DE</strong>A<br />

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