1. P14417: B9 Plastics - Particle Filter Problem Definition
Dan Anderson / Thomas Heberle / Perry Hosmer / Karina Roundtree / Kelly Stover
September 10, 2013

2. Team Overview Name Discipline Daniel Anderson (PM) Industrial Engineer
Thomas Heberle
Mechanical Engineer
Perry Hosmer
Karina Roundtree
Kelly Stover
Project Team Guide: Gerald Garavuso

3. Agenda Team Norms & Values Project Background
Problem Statement & Project Deliverables
Engineering Requirements
Design Drivers & Critical Challenges
Draft of Project Plan
Next Steps…

4. Team Norms and Values Punctual Thorough Accurate
Professional and Ethical
Committed

5. Project Background
Local non-profit organization, B9 Plastics, hopes to save lives with their “Better Water Maker” (BWM) UV transmission disinfection system.
Before the UV transmission, a particle filter needs to be used to prepare the water for disinfection.
Previous Project & Issues
Last year, a French Press Particle Filter was designed for The BWM, but presented several issues.
A bucket tapering issue.
Excessive force was required.
Construction integrity

6. Theory of Product Function UV Filtration Process:
The Particle Filter serves as a pre-filter for the UV transmission process. When using UV light to disinfect water, the effectiveness of the system depends on the source water being relatively clear, particle free, and free of dissolved UV absorbing compounds.
Unclean Water
Removes particles from the water.
This makes UV transmission more effective.
Particle Filter UV
UV Transmission

7. 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

8. Project Scope & Deliverables
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
Documentation*

9. Use Scenarios People may collect water:
From a river or lake
From a common well
From home (not clean)
The system will need to adapt to all these potential use scenarios.
*Our end goal is to have a filter that is easy to use and easily adaptable to different scenarios.

10. Stakeholders Bob Bechtold, Harbec Kate Chamberlain, B9 Plastics
Gerald Garavuso, Faculty Guide
Chris Fisher, MSD Office Sponsor
End Users
RIT
RIT*
Mark?*

11. Customer Requirements
Rev /6/13
Rank: 9 high,3 med,1 low
Category
Customer Req. #
Importance
Description
Comment/Status
Constraints
CR1 3
Flow rate must be at least 1 lpm
Ease of Use
CR2 9
Easy to Clean/Recharge
CR3
Lightweight for transport.
CR4
Has a minimal start-up period.
CR5
Operates using energy available naturally (gravity, human power, etc.)
Economics
CR6
Filter is Inexpensive
CR7
Usable by a family of 5, for 2-5 years w/out full replacement
CR8
Requires no consumables for operation, except for very cheap & locally available materials (salt, soap, sand, etc.)
Functionality
CR9
Improves UV Transmission
CR10
Removes Particles (turbidity/total suspended solids)
CR11
Does not negatively affect the taste of the water
Safety
CR12
Safe to use. (No hazardous releases)

12. Engineering Requirements
Rev /6/13
Category
Customer Requirement
Function
Metrics
Direction
Units
Marginal
Target
Constraints
Flowrate
Meet flow rate constraint
Amt of water per min. ^
lpm (Liters per Minute) 1 2
Ease of Use
Easy to Clean/Recharge
Easy to prepare for use
Time to clean v
Minutes 10 5
Lightweight for transport.
Minimize weight of filter
Weight in LBs
LBs (Pounds)
Has a minimal start-up period.
Minimize start-up
Time to begin filtering
s (seconds) 30
Operates using energy available naturally (gravity, human power, etc.)
Doesn't need power source
Binary (Yes/No) - No
Economics
Filter is Inexpensive
Minimize cost of filter
Total cost to produce
$ (dollars) 25 20
Usable by a family of 5, for 2-5 years w/out full replacement
Maximize durability of filter
Mean Time To Failure
hrs (hours)
365
912.5
Requires no consumables for operation, except for very cheap & locally available materials (salt, soap, sand, etc.)
Minimize cost to maintain
Annual cost to operate
Functionality
Removes Particles (turbidity/total suspended solids), improves UV TRANSMISSION
Turbidity is decreased
Yes
total suspended solids decreased
amt of total suspended solids
mg/L (milligrams per liter)
Does not negatively affect the taste of the water
No negative taste of water
Percent of people who say water tastes bad %
Safety
Safe to use. (No hazardous releases)
Doesn't produce hazardous release
Use requirements to create visual representation of the most critical requirements.

13. Engineering Requirements
House of Quality
Engineering Requirements
Needs
Priority
Turbidity is decreased
Total suspended solids decreased
Minimize cost of filter
Maximize durability of filter
Minimize cost to maintain
No negative taste of water
Doesn't produce hazardous release
Meet flowrate constraint
Easy to prepare for use
Minimize weight of filter
Minimize start-up
Doesn't need power source
Flowrate must be at least 1 lpm 3 x
Easy to Clean/Recharge 9
Lightweight for transport.
Has a minimal start-up period.
Operates using energy available naturally (gravity, human power, etc.)
Filter is Inexpensive
Usable by a family of 5, for 2-5 years w/out full replacement
Requires no consumables for operation, except for very cheap & locally available materials (salt, soap, sand, etc.)
Improves UV Transmission
Removes Particles (turbidity/total suspended solids)
Does not negatively affect the taste of the water
Safe to use. (No hazardous releases)
Measure
Binary (Yes/No)
mg/L (milligrams per liter)
$ (dollars)
hrs (hours) %
lpm (Liters per Minute)
Minutes
LBs (Pounds)
s (seconds)
Sum of (Priority) 18 12

14. Preliminary Schedule

15. Milestones Ahead Concept Selection Proof of Concept 9/22/2013
System Design
9/26/2013
Proof of Concept
10/10/2013
Subsystems Design
10/22/2013

16. Looking Forward Questions? Immediate Next Steps
Begin developing function tree
Benchmarking technologies related to primary functions
Risk Assessment
Questions?