1. Titanium Nanotube Reactor: Systems Design Review P13601 Members: Bill Dullea Garry Clarke Jae Ho Kelly McNabb Mary Medino 10/5/12

2. Summary Commercial Use:  Solar Cells  Catalysts  Batteries  Super-Capacitors and Membranes  Separation media Importance:  Synthesized very cost effectively

3. Benchmark Front entrance Semi-press fit door Sensors to read temperature Data acquisition using LabView Preset holes for electrode placement Reaction container made from plexi-glass No mixer mechanism for solution Purge system with N 2 Solution container is plastic cup

4. Most Important Needs Easy to Use  Load/unload electrodes and electrolytes Design scales up for larger sample size Control/Monitor  Temperature  Voltage  Current Maintain relative humidity <15%

5. Functional Decomposition

6. Systems Architecture 1

7. Systems Architecture 2

8. Specifications SpecificationCustomer NeedDescriptionRange 15,9 Controling Temp of soluotion with 1 deg C 0-70 deg C 27,9Control and monitor voltage.0-150 V 38,9Control and monitor current.100 uA-5A 410Humidty Control<15% 56,10,11,14 Inert Enivorment with Nitrogen Purge 619 Easy Use for loading and unloading electrodes 71,2,13,20Large volume plastic beaker250-500mL

9. Pugh Diagram NormConcept 1Concept 2Concept 3Concept 4 Entrance Front doorTop doorFront entranceFront doorTop door Locking Mechanism semi-press fitSlide door slide door/ clamppress-fit Gauge/ reading sensorsThermometersensorsensorsthermocouple in plastic Data aquition LabView Electrode placement preset holesslip onslidepreset holesslide Container material plexi-glass Solution container material plastic cupplastic beakerplastic cupplastic beakerplastic cup Stirring mechanism nonemagnetic stirrerpercolateagitatorsonicator Inert gas N2N2 N2N2 N2N2 N2N2 dry air

10. Pugh Analysis

12. Risk Assessment Key Likelihood scaleSeverity scale 1 - This cause is unlikely to happen1 - The impact on the project is very minor. We will still meet deliverables on time and within budget, but it will cause extra work 2 - This cause could conceivably happen 2 - The impact on the project is noticeable. We will deliver reduced functionality, go over budget, or fail to meet some of our Engineering Specifications. 3 - This cause is very likely to happen 3 - The impact on the project is severe. We will not be able to deliver, or what we deliver will not meet the customer's needs.

13. MSD Project Risk Assessment Template IDRisk ItemEffectCause Likelih ood Severit y Import ance Action to Minimize RiskOwner Describe the risk briefly What is the effect on any or all of the project deliverables if the cause actually happens? What are the possible cause(s) of this risk? L*S What action(s) will you take (and by when) to prevent, reduce the impact of, or transfer the risk of this occurring? Who is responsible for following through on mitigation? 1 Controlling Temperature with set specification Becomes run away reactionChiller/ Heater339 Once we get specs 10/2/12; test the machine for data by 10/9/12 or 10/11/12 Team Leader 2 User Interface with Labview Acquiring poor data analysisProgramming Error236 Integrate unit tests 1 at a time by weeks; specification TBD Chief Programmer 3Controlling Humidity Changes concentration which ultimately changes the end product result Undesired Reactions236 Utilized CaCl as a hydrophilic material to control excess/ produced water (drierite) Team Leader 4Run away reactionMaterials become scrap Temperature becomes too high/current get high 224Control Temperature/current of the solution Chief Design Engineer 5 Perculation prevents Ti growth Non uniform TiO2 growth Design set by team used as a cooling effect 224 Test design theory with water and N2 gas to get a relative data of solution aggetation 10/9 Bill 6 Building Technique/ Machine Work Lose of building integrity Implementing wrong Technique 133 3 point check technique, basically double check work with two different perspective Chief Design Engineer 7Chiller Specification Designed an inappropriate cooling system to our design Designing reactor cooling system was not specified by client 339 Acquire client's chiller specifications/ maunel by 10/2/12; modify the design with the new specs by 10/5/12 Garry 8 N2 flow rate difference at extremes Temperature difference may cause the flow rate to be unrealistic The extreme solution temperature may change the temperature difference within the crude estmation 236 Run tests with given chiller/heater to see where the limits are, give the client the new specifications Leader 9N 2 reaction Changing concentrations, affecting nanotube growth and stability Cooling system design212 Accept that this may happen but research the amount of change Team Leader 10 Poor Temperature Readings Client will disappointed since they won’t know the effects of temperature readings on the nanotube growth Thermocouples readings/ contaminants 212 Buy proper thermocouples with possible alternative materials Proprietor 11Nitric Acid Formation Changes concentration and affect reaction rates, and hinder formation of nanotubes N 2 used as a cooling perculation 111 Accept that this may happen but research if they affect the solution Team Leader

14. Current Design

15. Preliminary Design N2 Power Supply Chiller Water Trap T chil in T chil out T sol Flow Valve

16. Future Schedule Start WeekTaskResponsibleResourcesStartEnd Party Date Week 6Begin labview rough draftTBA Procure materials listTBA Evaluate materialsTBA Procure equipment listTBA Update process flow diagram(PFD)TBA Update risk assessmentTBA Procure cost of materialsTBA Week 7Decision of materialsTBA Update risk assessmentTBA Review labviewTBA Week 8Update risk assessmentTBA Detail Design ReviewEveryone 10/26/2012 Plan building techniqueTBA Start planning future scheduleTBA Team building exerciseTBA Week 9Start planning winter transfer to springTBA Procure cost of using machine shopTBA Negociate cost of materials with vendorsTBA

17. Questions????