P14417: B9 Plastics - Particle Filter Detailed Design Review

1. P14417: B9 Plastics - Particle FilterDetailed Design Review Dan Anderson / Thomas Heberle / Perry Hosmer / Karina Roundtree / Kelly Stover December 10, 2013

2. Agenda • Problem Definition (time?) • Updated Design and Bill of Materials Justification (time?) • Test Plans (time?) • Assembly Procedure (time?) • Project Management (time?)

3. Problem Definition

4. Problem Statement Current State: • In order to use the Better Water Maker (BWM) users must first pour the water through a cloth before being treated. Desired State: • The device should clear particles from water to allow the BWM to operate more effectively. • The device should be simple to use and operable by both women and children. Project Goals: • Analyze the design selected by P13418 • Improve the effectiveness of the Better Water Maker Notable Constraints: • Must be usable by both women and children • Only locally available materials may be consumed • Must not negatively impact the smell and taste of water

5. Project Scope & Deliverables • Project Scope • Eliminate particles greater than 5 microns in size • Produce a design that is economically viable for use in developing countries • Design the device to be reusable, and use only consumable parts that are locally available • Deliverables to date • Functional prototype • Bill of Materials • Design Drawings • Assembly and manufacturing plan • Test plan and results

6. Customer Requirements

7. Engineering Requirements

8. Updated Design and Bill of Materials

9. Updated Drawing – CAD Drawing

10. Updated Drawing – Exploded BOM 1 3 2 4

11. Bottomless Bucket

12. Bottomless Bucket • Bucket in BOM chosen was inexpensive • Most buckets would work

13. Lid

14. Lid • Matches bucket bottom, reusable • Inexpensive

15. 5 Micron Mesh

16. 5 Micron Mesh • Stainless steel- limits corrosion • Material often used in filters

17. Bucket

18. Bucket • Inexpensive • 5 gallon deemed a good size • Same as bottomless bucket

19. Spacer

20. Rod

21. Spacer and Rods • Used to seal in mesh in assembly and to provide space between mesh and lid

22. Indented BOM

23. Assembly Procedure

24. Steps…

25. Engineering Requirements

26. Engineering Requirements

27. Time to Clean • Pilot study: select 30 participants, provide cleaning instructions, time the process • Hypothesis test (95% confidence) on the average time to clean product • H0: µ >= 5 minutes • HA: µ < 5 minutes • Adjustments in sample size (i.e. additional observations) may be necessary depending on the variance in the observed results • If the cleaning time is over the target value of 5 minutes, test for marginal success of 10 minutes

28. Engineering Requirements

29. Number of Tools Required for Cleaning • Count of tools required • Nylon cloth is best material to clean this stainless steel mesh • Image of brush (KARINA WILL DECIDE THIS)

30. Engineering Requirements

31. Weight

32. Engineering Requirements

33. Start-up Time • Pilot study: collect 30 observations of start up time • Hypothesis test (95% confidence) on the average start up time • H0: µ >= 10 seconds • HA: µ < 10 seconds • Adjustments in sample size (i.e. additional observations) may be necessary depending on the variance in the observed results • If the cleaning time is over the target value of 10 seconds, test for marginal success of 30 seconds

34. Engineering Requirements

35. No Power Source Needed • Show a picture of the design on this page • “Based on our design, there is no power source necessary”

36. Engineering Requirements

37. Total Cost of Components

38. Labor Cost Estimations • Based on the assembly plans

39. Engineering Requirements

40. Mean Time to Failure

41. Engineering Requirements

42. Operating Costs • All components will last longer than the required 2 years. • Operating costs will be $0/year

43. Engineering Requirements

44. Percentage Decrease in Turbidity • Pilot study: collect 30 observations of turbidity • Collect before/after, compute % difference • Hypothesis test (95% confidence) on the average % difference • H0: µ >= .75 • HA: µ > .75 • Adjustments in sample size (i.e. additional observations) may be necessary depending on the variance in the observed results • If turbidity does not meet target, test at 50% for marginal success

45. Engineering Requirements

46. Percentage Decrease in Total Suspended Solids • Pilot study: collect 30 observations of TSS • Collect before/after, compute % difference • Hypothesis test (95% confidence) on the average % difference • H0: µ >= .75 • HA: µ > .75 • Adjustments in sample size (i.e. additional observations) may be necessary depending on the variance in the observed results • If turbidity does not meet target, test at 50% for marginal success

47. Engineering Requirements

48. Taste of Water • Recruit at least 100 RIT students • Have each drink tap water that has not been treated with the filter and water that has been treated by the filter (blind) • Ask each student if the water tastes better, worse, or about the same • Target: 75% respond with better or about the same • Marginal: 50% respond with better or about the same

49. Engineering Requirements

50. Hazardous Releases • Review of the design