Chris e.


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Chris e.

  1. 1. Designing a solar ovenBy:Chris E.Monday, May 20, 13
  2. 2. Imagine for design #1For are materials we used river rocks and we usedone piece of flat dark foam.Advantages the river rocks can be reused and it isnatural and it can last a long time also the foam is thickand can act as a good insulator.Disadvantages the foam takes a long time todecompose in a landfill and it is processed.Monday, May 20, 13
  3. 3. Imagine for design #1Are materials two pieces of flat felt and onepiece of shredded dark foam.Advantages the two materials dark foamand felt are the best insulators.Disadvantages they both can not be recycledand they both have a lot of ink in them.Monday, May 20, 13
  4. 4. Plan for design #1Monday, May 20, 13
  5. 5. Plan for design #1Monday, May 20, 13
  6. 6. Materials UnitsHow will we usethe materialFelt 2 piecesWe are going toleave the felt flatFoam 1pieceWe are going toshred the foaminto piecesPlan for design #1Monday, May 20, 13
  7. 7. Design#1ReduceNatural orProcessedReuse RecycleTotalpointsFeltFoam4 units Processed No No 71 units Processed No No 411Impact score for design #1Monday, May 20, 13
  8. 8. Solar oven testing in the sunTime Tempature0 minutes 25°c5 minutes 46.2°c10minutes 66.2°c15 minutes 65.6°c20 minutes 71.1°c25 minutes 71.7°cMonday, May 20, 13
  9. 9. 1 minute 54.2°c2 minutes 44.1°c3 minutes 36.9°c4 minutes 32.9°c5 minutes 31.6°c6 minutes 30°cSolar oven in the shadeMonday, May 20, 13
  10. 10. CreateOur heat score is our solar oven maximumtemperature subtracted from the solar oven:72°c- 55°c=17°cOur score time is the number of minuets it took tocool down witch was 4 minutes.Our total impact score was 11 points the totalpoints for the solar oven is 10 points.Monday, May 20, 13
  11. 11. Improve for design #1The total score for are first solar oven was 11 pointsThe parts of our solar oven that worked well were theshredded foam because it was the one that kept most ofthe heat inside the box.The parts of the solar oven that did not work well was thefelt because it did not help a lot with keeping the heat in.We are going to try to improve are heat score.We will Improve are heat score by adding more foambecause is was the best insulator and it will keep the heatin.Monday, May 20, 13
  12. 12. Plan for design #2Monday, May 20, 13
  13. 13. Plan for design #2Monday, May 20, 13
  14. 14. Materials UnitsHow will I use thematerialFelt 1I will have the feltshreddedFoam 2I will have thefoam shreddedPlan for design #2Monday, May 20, 13
  15. 15. Impact score for design #2Design#2ReduceNatural orprocessedReuse RecycleTotalpointsFeltFoam1 Processed No No 44 Processed No No 711Monday, May 20, 13
  16. 16. Time Temperature0 minutes 23°c5 minutes 50.2° c10 minutes 60°c15 minutes 62°c20 minutes 63.1°c25 minutes 65.9°c30 minutes 68.4°cSolar oven testing in the sunMonday, May 20, 13
  17. 17. Time Temperature1 minute 42.1°c2 minutes 37.2°c3 minutes 33°c4 minutes 29.2°c5 minutes 26.4°c6 minutes 24.5°c7 minutes 22.6°c8 minutes 22°c9 minutes 22.1°c10 minutes 21.8°cSolar oven testing in the shadeMonday, May 20, 13
  18. 18. CreateOur heat score is our solar oven maximum temperaturesubtracted from the control oven 68-38=30.Our time score is the number of minutes it took to cooldown witch was 5 minutes.Our total impact score was 6 points our new total scorefor the solar oven is 29.Monday, May 20, 13
  19. 19. ReflectionOur improved design worked well because thetemperature got higher faster then the other materials.The materials we used were good insulators because theykept most of the heat in the solar oven.If we could improve again we would keep it the same oruse more shredded felt because it is good insulation.Monday, May 20, 13