Lawn Sprinkler System Design

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Lawn Sprinkler System Design
ME 414 Thermal Fluid System Design Spring 2004

• Presented By
• Matt Sease, Mike Kessler, Tiffany Urias

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Objective

• Design a lawn sprinkler system with
• Minimize the power
• Minimize the cost
• Maximum efficiency
• Minimize time to deliver 1 inch of water evenly
• Minimize wasted water
• Minimize water on driveway and neighboring
  properties

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Designs

• Comparing layouts
• Rectangular spraying sprinkler heads
• Layout1 9 by 18
• Layout2 5 by 15
• Layout3 5 by 30

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Layout 1 9 by 18
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Layout 1

• 109 Spray Sprinkler nozzles (179.85)
• 109 Spray Sprinkler Bodies (153.69)
• Total cost 333.54
• 7 feet of overlapping
• No water wasted on driveway, house, or neighbors
  yard

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Layout 2 5 by 15
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Layout 2

• 166 Spray Sprinkler nozzles (177.62)
• 166 Spray Sprinkler Bodies (234.06)
• Total cost 411.68
• 15 feet of overlapping
• No water wasted on driveway, house, or neighbors
  yard

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Layout 3 5 by 30
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Layout 3

• 107 Spray Sprinkler nozzles (114.49)
• 107 Spray Sprinkler Bodies (150.87)
• Total cost 295.36
• 7 feet of overlapping
• No water wasted on driveway, house, or neighbors
  yard

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Final Design

• Based upon the comparison of the 3 designs,
  Layout 3 was chosen based on
• Price 295.36
• Overlapping water 7 feet
• Wasted water 0 feet on driveway, house, and
  neighbors yard

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Fathom Layout
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Pipe Layout Cost
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Sprinkler and Pump Data
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Pump Selection

• Peerless Pump F 815G
• Speed 3500 rpm
• 7.375 in diameter
• Efficiency 68
• Power 9.86 hp

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Performance Curve of Pump
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Overall Cost

• Sprinkle Heads and Bodies 295.36
• Pipe Costs 293.44
• Pump Cost N/A
• Estimated Total Cost without pump
• 588.80

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Design Recommendation

• For use with domestic water table
• Atmospheric Vacuum Breaker
• Prevents back siphoning in the event of major
  pressure loss in domestic system

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References

• Sprinkler Heads and Bodies Prices
• http//www.homecenter.com
• Pump Selection
• www.pumpflo.com
• Pipes Prices
• http//www.mcmaster.com
• Atmospheric Pressure Breaker
• http//www.dwbp-online.com/avb_flow.htm