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Jim Hahn Kelly McCormick Jeff Snyder Andrew Taylor Nathan Wagers ME 414: Thermal/Fluid Systems.

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Presentation on theme: "Jim Hahn Kelly McCormick Jeff Snyder Andrew Taylor Nathan Wagers ME 414: Thermal/Fluid Systems."— Presentation transcript:

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2 Jim Hahn Kelly McCormick Jeff Snyder Andrew Taylor Nathan Wagers ME 414: Thermal/Fluid Systems

3 Design an efficient yard irrigation system where cost, delivering time, and wasted water are all minimized. http://www.popularmechanics.com/home_journal/gardening 12/11/07

4  Minimize:  Equipment Costs  Delivering Time  Wasted Water  Electric Utility Costs  Even Distribution of 1 inch Depth of Water

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7 Back (Zone 1) Front (Zone 2) Drive (Zone 3) Area 8400 ft 2 3980 ft 2 1080 ft 2 Volume 700 ft 3 332 ft 3 90 ft 3 Gallons 5236.42481.0673.2 Minutes 1357665 GPM 38.732.7610.4

8  3 Zones: Driving Force is Geometry  Source of Water: Central Location  Assume Infinite Flow  60 psig available  100% Overlap to Ensure Satisfactory Water Distribution  Eliminate Spray outside of Yard Boundaries  Need for Several Sizes of Sprinkler Heads

9 Rainbird Sprinkler Heads Pressure (psi) Radius (ft)GPMInletAdjustment# 42SA All Purpose Rotor25 26-38 (35)2.58 3/4" NPT Female25%15 22SA-F Full Rotor23 17-24 (18)2.6 1/2" NPT Female--6 22SA-F Half Rotor23 17-24 (18)2.6 1/2" NPT Female--13 22SA-Q Quarter Rotor23 17-24 (18)2.6 1/2" NPT Female--9

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19 Jim Hahn Kelly McCormick Jeff Snyder Andrew Taylor Nathan Wagers ME 414: Thermal/Fluid Systems

20 Design Shell and Tube Heat Exchanger to Use City Water to Remove 1.2M Watts from Process Water.  Process Water  Inlet Temperature 90° C  Outlet Temperature 40° C  City Water  Inlet Temperature 25° C

21  Meet 1.2M Watts of Thermal Requirement  Minimize Tube Side & Shell Side Pressure Drops  Minimize Raw Material Cost, By Weight  Minimize Heat Exchanger Internal Volume  HE Length Should Not Exceed 8 Meters.

22  Matlab  HE Design Program Used to Perform Calculations Based on Known Design Parameters.  Minitab  Used to Perform Statistical Analysis of “Design of Experiment” Studies Performed with Matlab Program.

23  Tube OD  Tube Length  Tube Thickness  Tube Layout & Angle  Tube Material  Tube Pitch  Shell ID  Shell Material  Shell Thickness  City Water Flow Rate  Counter or Parallel Flow  City Water Flow Side  Baffles – Yes or No  Baffle Spacing

24 Used to Eliminate Variables with Little Effect on Main Criteria

25 Used to Identify Variables which Interact to Affect Main Criteria

26 Used to Identify Variables’ Relative Level of Effect on Main Criteria

27 Four Final Variables Identified and Used to Optimize Two Final Designs Design #1 – Optimized for Pressure Drops Design #2 – Optimized for Weight & Cost

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30 DESIGN #1 – DELTA P OPTIMIZEDDESIGN #2 – WEIGHT OPTIMIZED  Thermal Capacity: 1.2M Watts  Material Weight: 109.9 Kg  Total Weight: 374.9 Kg  Material Cost: $120.91  Volume: 1.13 m 3  Delta P Shell: 628.9 Pa  Delta P Tube: 167.6 Pa  Thermal Capacity: 1.2M Watts  Material Weight: 73.1 Kg  Total Weight: 228.7 Kg  Material Cost: $80.36  Volume: 1.01 m 3  Delta P Shell: 701.3 Pa  Delta P Tube: 933.7 Pa

31  Toksoy, John. ME 414 Thermal-Fluid Systems Design. Department of Mechanical Engineering, IUPUI, Indianapolis, IN, Fall 2007.  Kakaç, S., Hongtan, L. Heat Exchangers: Selection, Rating, and Thermal Design. 2 nd Ed., CRC Press LLC, Boca Raton, FL, 2002, 7 Dec 2007.

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