P14417: B9 Plastics - Particle FilterProblem Definition

Dan Anderson / Thomas Heberle / Perry Hosmer / Karina Roundtree / Kelly Stover

September 10, 2013

Team Overview

Name Discipline

Daniel Anderson (PM) Industrial Engineer

Thomas Heberle Mechanical Engineer

Perry Hosmer Mechanical Engineer

Karina Roundtree Mechanical Engineer

Kelly Stover Industrial Engineer

Project Team Guide: Gerald Garavuso

Agenda

• Team Norms & Values

• Project Background

• Problem Statement & Project Deliverables

• Engineering Requirements

• Design Drivers & Critical Challenges

• Draft of Project Plan

• Next Steps…

Team Norms and Values

• Punctual

• Thorough

• Accurate

• Professional and Ethical

• Committed

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.o A bucket tapering issue.o Excessive force was required.o Construction integrity

Theory of Product Function

UV Filtration Process:

Unclean Water

• Removes particles from the water.

• This makes UV transmission more effective.

Particle

FilterUV

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.

UV Transmission

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 MakerNotable 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

Project Scope & Deliverables

• Project Scopeo Eliminate particles greater than 5 microns in sizeo Produce a design that is economically viable for use in developing countrieso Design the device to be reusable, and use only consumable parts that are

locally available

• Deliverables to dateo Functional prototypeo Bill of Materialso Design Drawingso Assembly and manufacturing plano Test plan and results

Use Scenarios

• People may collect water:o From a river or lakeo From a common wello 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.

Stakeholders

• Bob Bechtold,  Harbec

• Kate Chamberlain, B9 Plastics

• Gerald Garavuso, Faculty Guide

• Chris Fisher, MSD Office Sponsor

• End Users

• RIT

Customer Requirements Rev. 3 9/6/13Rank: 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 Ease of Use CR3 3 Lightweight for transport. Ease of Use CR4 3 Has a minimal start-up period. Ease of Use CR5 9 Operates using energy available naturally (gravity, human power, etc.) Economics CR6 9 Filter is Inexpensive Economics CR7 9 Usable by a family of 5, for 2-5 years w/out full replacement

Economics CR8 9 Requires no consumables for operation, except for very cheap & locally available materials (salt, soap, sand, etc.)

Functionality CR9 9 Improves UV Transmission Functionality CR10 9 Removes Particles (turbidity/total suspended solids) Functionality CR11 3 Does not negatively affect the taste of the water Safety CR12 9 Safe to use. (No hazardous releases)

Engineering RequirementsRev. 3 9/6/13

Category Customer Requirement Function Metrics Direction Units Marginal Target

ConstraintsFlowrate Meet flow rate constraint

Amt of water per min. ^ lpm (Liters per Minute) 1 2Ease of Use Easy to Clean/Recharge Easy to prepare for use Time to clean v Minutes 10 5Ease of Use Lightweight for transport. Minimize weight of filter Weight in LBs v LBs (Pounds) 10 5Ease of Use Has a minimal start-up period. Minimize start-up Time to begin filtering v s (seconds) 30 10

Ease of Use 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 v $ (dollars) 25 20

Economics 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

Economics Requires no consumables for operation, except for very cheap & locally available materials (salt, soap, sand, etc.) Minimize cost to maintain Annual cost to operate v $ (dollars) 2 0

FunctionalityRemoves Particles (turbidity/total suspended solids), improves UV TRANSMISSION Turbidity is decreased Binary (Yes/No) - - - Yes

FunctionalityRemoves Particles (turbidity/total suspended solids), improves UV TRANSMISSION total suspended solids decreased

amt of total suspended solids v mg/L (milligrams per liter) 20 0

Functionality Does not negatively affect the taste of the water No negative taste of waterPercent of people who say water tastes bad - % 5 0

Safety Safe to use. (No hazardous releases) Doesn't produce hazardous release Binary (Yes/No) - - - No

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 x Lightweight for transport. 3 x x Has a minimal start-up period. 3 x Operates using energy available naturally (gravity, human power, etc.) 9 x x

Filter is Inexpensive 9 x Usable by a family of 5, for 2-5 years w/out full replacement 9 x Requires no consumables for operation, except for very cheap & locally available materials (salt, soap, sand, etc.) 9

x x

Improves UV Transmission 9 x x Removes Particles (turbidity/total suspended solids) 9 x x Does not negatively affect the taste of the water 3 x

Safe to use. (No hazardous releases) 9 x

Measure Binary

(Yes/No)

mg/L (millig

rams per

liter)

$ (dollars)

hrs (hou

rs)

$ (dollars

) %Binary

(Yes/No)

lpm (Liters

per Minute

)Minut

es

LBs (Poun

ds)

s (secon

ds)

Binary (Yes/N

o)

Sum of (Priority) 18 18 12 9 9 3 9 3 18 3 12 9

Preliminary Schedule

Concept Selection9/22/2013

System Design

9/26/2013

Proof of Concept

10/10/2013

Subsystems Design

10/22/2013

Milestones Ahead

Looking Forward

• Immediate Next Stepso Begin developing function treeo Benchmarking technologies related to primary

functionso Risk Assessment

Questions?