1 / 28

Mr. Coffee – Redesign and Conclusions

Industrial Ecology – Spring 2012. Mr. Coffee – Redesign and Conclusions. Recap – Disassembly & Analysis Conclusions Redesign – Use Phase and Additional Improvements Conclusions – Total Impact Reduction . Table of Contents. Disassembly- Explosion Diagram.

liz
Download Presentation

Mr. Coffee – Redesign and Conclusions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Industrial Ecology – Spring 2012 Mr. Coffee – Redesign and Conclusions

  2. Recap – Disassembly & Analysis Conclusions Redesign – Use Phase and Additional Improvements Conclusions – Total Impact Reduction Table of Contents

  3. Disassembly- Explosion Diagram http://www.buyspares.co.uk/tefal/coffee-makers/896115-vitesse-coffee-maker/catalogue.pl?shop=tefal&path=290047&model_ref=41271&illustration_ref=27443

  4. Carbon and Energy Totals Eco Audit- Energy Summary

  5. Eco Audit- Water Consumption Summary

  6. Problem Statement – Where we left off

  7. Function, Objectives, Constraints, Free Variables

  8. Redesign – Design Requirements

  9. Redesign – Coffee Pot Materials Selection

  10. Redesign – Analysis of Polypropylene

  11. Redesign – Analysis of Polypropylene

  12. Use Phase – Key Design Changes • Insulated Coffee Carafe • Heating Element Location • Stainless Steel Reusable Filter • 8-cup Water Capacity

  13. Redesign: Insulating Carafe • Dual shell vacuum insulation. • Minimal points of contact. • Minimal heat loss by conduction. • Keeps coffee warm at 160F (71C) for up to 6 hours. • No need for reheating of coffee

  14. Redesign: Result of Insulating Carafe • Heat transfer by conduction. • Heat transfer is minimized by the coefficient of thermal conductivity of insular material. • Heat transfer is minimized by the insulation thickness. • Energy Calculations. • - Input at 900watts • -10min/day on time • Energy = 900J/s*600s=540kJ/day • Life time = 6yrs • Energy = 540kJ/day*365day*6years • =1182.6MJ/lifetime Life time energy saving 2770MJ-1182.6MJ=1587MJ 57% cut in energy consumption

  15. Usage Adjustments – Reusable Filters Saves up to 334.3 MJ of energy and 7.5kg of CO2

  16. Usage Adjustments – Reduction in Water Capacity Original Use Water Consumption: 93,220kg By reducing capacity to 8 cups, an estimated reduction in daily use is 2 cups Total Use = 74,661kg New Water Consumption: Water Savings: 18,559kg

  17. Redesign – Analysis & Redesign of Packaging Materials

  18. Redesign – Eliminating water transport in Use phase • Assumptions: • The entire reservoir,8 cups is transported through the machine in approximately 10 minutes • The Coffee is warmed to 90.5-96C (Environmental impacts of different methods of coffee preparation by Eva Brommer,BrittaStratmann and Dietlinde Quack) • Energy losses can be directly correlated to energy savings. • Room temperature is 23 degrees Celsius. • The tubing is a perfect cylinder of length .3556 meters • Coefficient of Thermal Conductivity of the Tubing is .13 W/mK (http://www.engineeringtoolbox.com/thermal-conductivity-d_429.html)

  19. Redesign – Calculating Energy Gains

  20. Redesign – Calculating Energy Gains Saves Approximately 18 MJ Per Unit

  21. Redesign:

  22. Redesign: Water & Heating Diagram

  23. Redesign: Filter & Basket

  24. Redesign: Cumulative Results

  25. Conclusions- Overall Impact

  26. Conclusion Comparability: • Costs – New Design is in the same price bracket as original • End-of-Life – Both glass and stainless steel can be recycled Significant Findings: • Insulated carafe is responsible for the most dramatic energy savings • Stainless steel would be an easy substitute for the glass carafe

  27. Final Conclusions and Changes Insulated Carafe Reusable Stainless Steel Filter 8-Cup Water Capacity Location of the Heating Element

  28. Works Cited http://www.buyspares.co.uk/tefal/coffee-makers/896115-vitesse-coffee-maker/catalogue.pl?shop=tefal&path=290047&model_ref=41271&illustration_ref=27443 http://www.statista.com/statistics/220433/life-expectancy-of-coffee-machines/ http://www.energystar.gov/ia/products/downloads/ENERGY_STAR_Scoping_Report_Coffee_Makers.pdf

More Related