1. A6: Team Rallye Potable Water Still Presented by: Entire Group September 28, 2006 Eric Sabelhaus Nicole Del Rey Mike McConnellTim Rodts

2. Design Status Power Bike Pedals Power Bike Pedals Generator Magnet DC Motor Generator Magnet DC Motor Heat Source Polymer ( ? ) encased wire Heat Source Polymer ( ? ) encased wire Condensation Cooling coils only Condensation Cooling coils only On time and moving with individual trade studies. On time and moving with individual trade studies.

3. Semester Outlook

4. Current Cost Analysis Chains Chains Chair Chair Gears Gears Generator Generator Polymer Polymer Temperature Sensor Temperature Sensor Battery Battery Tubing Tubing Vacuum pump Vacuum pump Pressure valves Pressure valves Bottom surface Bottom surface Adhesive Adhesive$3 $149 + ship $20$5$200$20$10 TOTAL $407

5. Action Items from Week 5 (09/19)

6. -1- Finalized Trade Study Proposals – Finalized Trade Study Proposals – Thermal and geometric optimization of polymer Thermal and geometric optimization of polymer Gearing for generator input Gearing for generator input Condensing mechanism Condensing mechanism Pressure reducing apparatus Pressure reducing apparatus

7. -2- Condensing Mechanism Condensing Mechanism The decision was made that on our limited budget the available materials would not support condensing with rapid pressure change. The decision was made that on our limited budget the available materials would not support condensing with rapid pressure change. Condensing using cooling coils is considered in one of the trade studies Condensing using cooling coils is considered in one of the trade studies

8. -3- Develop contacts with polymer supplier Develop contacts with polymer supplier Polymer suppliers have been contacted Polymer suppliers have been contacted not so cool. not so cool. Only sell to production line industry. Large Volume. Only sell to production line industry. Large Volume. Suggested difficulty with locating high temperature polymer bar stock. Suggested difficulty with locating high temperature polymer bar stock.

9. Action Items for Week 7 (10/03)

10. -1- CAD assembly of key components CAD assembly of key components Graphical aide to determine most compact orientation of components underneath chair Graphical aide to determine most compact orientation of components underneath chairApproach: Measure dimensions of known parts Measure dimensions of known parts Use worst-case dimensions for not yet ordered parts Use worst-case dimensions for not yet ordered parts Parts: Gears (2), Chair, Pedals, Stationary & Removable base, heating element, condensing tube, collection container Parts: Gears (2), Chair, Pedals, Stationary & Removable base, heating element, condensing tube, collection container

11. -2- Detailed cost analysis: all foreseeable purchases Detailed cost analysis: all foreseeable purchases Wood for base, pins, connections, seals, etc. Wood for base, pins, connections, seals, etc.Approach: Dimension bases (wood) Dimension bases (wood) Thorough analysis of design component connections Thorough analysis of design component connections Trade study results Trade study results

12. -3- Continue trade study analysis Continue trade study analysis Generator selection, embedded coils, condensation tubes, pressure reduction Generator selection, embedded coils, condensation tubes, pressure reductionApproach: Stay on task with individual schedules Stay on task with individual schedules Report progress back to group, offer feedback Report progress back to group, offer feedback

13. Show-stoppers Cost of parts Cost of parts $150 generator $150 generator $200+ air pump $200+ air pump Locate suppliers Locate suppliers Generator/Gear interface Generator/Gear interface Heat source. Heat source.

14. Questions?