1. Irrigation Systems and Components

2. Overview Types Layout Components Hydraulics Design Considerations

3. Functional Irrigation System Good DesignGood Design Good InstallationGood Installation Regular MaintenanceRegular Maintenance Water ManagementWater Management

4. Conceptual Layout Drip Lines Manifold Flow Meter Filter Chemical Tank Valve/Pressure Regulator From Water Supply Main Line

5. Micro System Components Pump (or gravity) 5-20 psi range (at emission point) Chemical injecting device Filtering system Mainlines/Submains (PVC) Laterals (drip line) Emitters Control valves/air and vacuum valves/regulators/water metering

6. Turbulent Flow Tape/Tubing

7. Pressure-Discharge Relationships 0<=x<=0.5 Sprinkler Drip Emitter

9. Application Rates Sprinkler I, iph q, gpm S l, S m, feet Operating hours = F g /IF g = gross irrigation depth

10. Irrigation System Application Rates

11. Drip, Operating Hours T- hours W w, wetted width, ft F g, gross irrigation depth, inches q, drip line discharge, gpm/100 ft

12. Pressure Variation

13. Pressure =8psi Slope = level EU=72.5

14. Pressure =8psi Slope = level Length = 500 feet EU=91.9

15. Pressure =8psi Slope = 1% downhill Length = 1,000 feet EU=82.4

16. Friction Loss Rule of Thumb, limit velocity to 5 fps Keep pressure variation within 20% Equations Darcy-Wiesbach Hazen-Williams Can balance capital cost of pipe against energy costs to overcome friction

17. Filter Types Media (Primary) Higher flow rates biological filtration Screen (Primary or Secondary) Lower flow rates Cheaper Disk (Primary or secondary) Number of cartridges per flow rate

18. Screen Size Silt Fine Sand

19. Filtration

20. Air/Vacuum valves Prevent ingestion of soil particles for SDI Prevent water hammer Keep air out of system Prevent collapsing of pipe

21. Pressure Regulation Reduce pressure from main/sub-main Set to tape/emitter specs Regulator for each zone or subunit

22. Pumping Requirements Flow Head (Total Dynamic Head - TDH) Operating Pressure Friction Losses Elevation Difference Static Lift

23. Pump Horsepower Requirement

24. Efficiency Pump Curve Power NPSHR 400 80

25. Efficiency Pump Curve Power NPSHR 400 80 System Curve

26. Irrigation System Costs