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Thermoelectric Beverage Cooler

Thermoelectric Beverage Cooler. Team #13 Gary Bartlett Sarah Donahue Mark Hodder Christina Kennedy. Presentation Overview. Introduction. Introduction Initial Model Preliminary Testing TEC Tests Controller Tests Coil Tests Leak Tests Design Modifications Final Design

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Thermoelectric Beverage Cooler

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  1. Thermoelectric Beverage Cooler Team #13 Gary Bartlett Sarah Donahue Mark Hodder Christina Kennedy

  2. Presentation Overview

  3. Introduction • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • 6. Design Requirements • 7. Budget • 8. Conclusions • Recommendations • 9. Acknowledgements • 10. Questions • Cool a warm beverage in less than one minute • Using thermoelectric materials • Countertop device • Eliminates the need for a bar/mini- fridge

  4. Initial Model • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • 6. Design Requirements • 7. Budget • 8. Conclusions • Recommendations • 9. Acknowledgements • 10. Questions Circular Shell Thermoelectric Pads x 4 Copper Coil Hexagonal Reservoir

  5. Preliminary Testing • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • 6. Design Requirements • 7. Budget • 8. Conclusions • Recommendations • 9. Acknowledgements • 10. Questions • Thermoelectric Material Testing • Controller Testing • Coil Testing • Leak Testing

  6. Thermoelectric Testing • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • 6. Design Requirements • 7. Budget • 8. Conclusions • Recommendations • 9. Acknowledgements • 10. Questions • TEC w/o Cooling • TEC w/Heat Sink + Fan • TEC w/Heat Sink + water

  7. Thermoelectric w/o Cooling System • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • 6. Design Requirements • 7. Budget • 8. Conclusions • Recommendations • 9. Acknowledgements • 10. Questions • Variable voltage input

  8. Thermoelectric w/Fan Cooling System • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • 6. Design Requirements • 7. Budget • 8. Conclusions • Recommendations • 9. Acknowledgements • 10. Questions • CPU heat sinks and fans • Cost-effective thermal paste • -15ºC for up to 60 secs

  9. Thermoelectric w/Heat Sink + Water Cooling System • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • 6. Design Requirements • 7. Budget • 8. Conclusions • Recommendations • 9. Acknowledgements • 10. Questions • RT water used / 12V input to TE pad • Initial temperature: -32ºC • Final temperature: -18ºC

  10. Controller Testing • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • 6. Design Requirements • 7. Budget • 8. Conclusions • Recommendations • 9. Acknowledgements • 10. Questions Controller & Electrical System • Functionality tested using two water baths

  11. Coil Testing • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • 6. Design Requirements • 7. Budget • 8. Conclusions • Recommendations • 9. Acknowledgements • 10. Questions • Fabrication • Coil angle • Pipe shape

  12. Leak Testing • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • 6. Design Requirements • 7. Budget • 8. Conclusions • Recommendations • 9. Acknowledgements • 10. Questions • Large volume of water used • Cold water reservoir • Cooling towers • Sources of leakage • Plastic-Wood • Plastic-Metal • Metal-Metal • Corrective measures • Adhesive / Sealant

  13. Design Modifications • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions • Cooling towers • 6 TECs • Coil shape • Square cross-section

  14. TE Energy Balance Design Modifications • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions TE Energy Balance • Heat sinks on hot side must be able to dissipate Heat. • Increasing power input can lead to heat sink saturation. • Originally had designed moving air cooling system. • Fan with appropriate CFM was not within our budget.

  15. Design Modification • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions

  16. Design Modifications • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions TE Energy Balance Using values for 5.0V: Using values for 12.0V: • Available heat sinks cannot dissipate required 12.0v heat: • All T.E pads must be run at 5.0v • Two backup TE pads were not damaged during testing, so they were incorporated into design

  17. Design Modifications • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions • Original coil had fabrication / flow problems • Better liquid flow • Easier to clean

  18. Design Modifications • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions

  19. Design Modifications • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions New footprint needed to accommodate design changes

  20. Final Design • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions

  21. Final Design • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions

  22. Design Requirements • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions 22

  23. Final Results • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions • Minimum temperature achieved: 15.3°C • Maximum temperature difference: 4.7°C

  24. Final Results • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions • Minimum temperature achieved: 19.4°C • Maximum temperature difference: 2.7°C

  25. What went wrong? • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions

  26. Design Requirements • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions NO YES Our unit power input: 526W 26

  27. Final Results • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions

  28. Design Requirements • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions NO YES YES? 28

  29. Final Results • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions • Beverage cooled from 30°C to 15°C

  30. Design Requirements • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions NO YES YES? YES YES 30

  31. Final Results • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions • Causes: • cooling towers • power supplies • extra TECs

  32. Design Requirements • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions NO YES YES? YES YES NO 32

  33. Operating Manual • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions

  34. Design Requirements • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions NO YES YES? YES YES NO YES 34

  35. Visually Appealing • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions

  36. Design Requirements • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions NO YES YES? YES YES NO YES YES 36

  37. Cleaning • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions • Rinse regularly with water • Open cover of thermoelectric cooler • Drain water from reservoir and cooling towers • Unscrew bolt on tap and remove coil from hexagonal reservoir • Remove caps from the bottom of the coil by unscrewing • Once opened, a brush may be inserted into the pipes to clean

  38. Design Requirements • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions NO YES YES? 7 of 9 requirements met YES YES NO YES YES YES

  39. Budget • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions We were approved for $1000 from the Mechanical Department. We are over budget by $100.

  40. Conclusion • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions During this process we were able to develop essential project management and design skills. We made some mistakes but were able to learn from them. Because of time restrictions we were unable to make all of the necessary changes to our design to improve its functionality, but were able to implement some.

  41. Recommendations • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions • Improved cooling system for thermoelectric pads • Water towers would be better constructed to prevent all leaking. • If we had the money we would have purchased a single power supply, which would decrease weight and size. • No need for the power supply to go underneath the reservoir. • The water reservoir should be smaller (less volume of water) to allow for more cooling. • Stirring mechanism could be implemented.

  42. Recommendations • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions • The unit needs improved insulation to prevent losses. • possible movement of TECs? • insulation around the cooling towers not needed • Thermoelectric materials would be permanently attached to both the water reservoir and the water towers. • Ideally the power would be an on/off button whereas ours is just a plug-in to turn it on situation.

  43. Acknowledgements • Introduction • Initial Model • Preliminary • Testing • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Design • Modifications • Final Design • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions We would like to thank all of our sponsors: And also: Dr. Basu Dr. Militzer Aiden Donahue Mark MacDonald Angus MacPherson Albert Murphy Dr. NoubarYemenidjian

  44. QUESTIONS? • Introduction • TEC Tests • Controller Tests • Coil Tests • Leak Tests • Final Results • Design Requirements • Budget • Conclusions • Recommendations • Acknowledgements • Questions Initial Model Preliminary Testing Design Modifications Final Design

  45. Why not use a fridge? VS

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