Yezen 1


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Yezen 1

  1. 1. Designing a solar ovenBy Y!enMonday, May 20, 13
  2. 2. Imagine for Design #1Idea #1Our material is white styrofoamWe need 3 unitsThe advantage of this idea is when we put the whitestyrofoam on the sides we could cover up the holes.The disadvantage of this idea is that we could get ahigher impact score.Monday, May 20, 13
  3. 3. Imagine for Design #1Idea #2Our materials are felt flat and foam flat.We need 2 units for flat felt and 1 unit for foam flatThe advantage of this idea is that the felt could hold moreheat and the foam could cover up the holes that let the heatoutThe disadvantage of this idea is the felt and foam would geta higher impact score.Monday, May 20, 13
  4. 4. Plan for design #1Top viewThewhitefoamwascut soit cancoverup anyholestheboxmayhaveMonday, May 20, 13
  5. 5. Plan for design #1Side viewMonday, May 20, 13
  6. 6. Plan for design #1Material UnitsWe will usethe materialby.Foam 1 units FlatFelt 2 units FlatMonday, May 20, 13
  7. 7. Impact score for design#1Design#1ReduceNaturalorprocessedreuse RecycleTotalpointsFelt 2 units Processed No No 5Foam 1 unit Processed No Yes 4Our total impact score is 9 pointsMonday, May 20, 13
  8. 8. Solar Oven Testing in theSunTime Temperature0 minutes 25°C5 minutes 32.6°C10 minutes 36.3°C15 minutes 38.1°C20 minutes 39.9°C25 minutes 40.2°CMonday, May 20, 13
  9. 9. Solar Oven in the ShadeTime Temperature1 minute 39.9°C2 minute 39.3°C3 minute 38°C4 minute 37.3°C5 minute 36.2°C6 minute 35.1°CMonday, May 20, 13
  10. 10. Create for Design #1Our heat score is our solar oven maxTemperature subtracted from the control oven:40-55=-15Our time score is the number of minutes ittook to cool down which was 6 minutes.Our total impact score was 9 points.Our total score for the solar -18°CMonday, May 20, 13
  11. 11. Improve for design #1The total score for our first solar oven was -18°C pointsThe parts of our solar oven design that worked well was thealuminum foil because it reflected the light well into the solarovenThe parts of our solar oven that did not work well was the plasticinsulator because it did not trap the heat inside the solar ovenWe are going to try to improve the heat score and the impactscore.We will improve our heat score by using new materials becausethey could possibly trap the heat inside the solar oven.Monday, May 20, 13
  12. 12. Plan for design #2This is thetop view ofour design #2solar oven.Monday, May 20, 13
  13. 13. Plan for design #2These areour newmaterials weare going touse for oursolar oven ondesign#2Monday, May 20, 13
  14. 14. Plan for design #2Materials UnitsHow will you use thematerialRed felt 1 unit Fold itAluminum 1 unit Fold itBlack foam 1 unit Fold itMonday, May 20, 13
  15. 15. Impact score for design#1Materials ReduceNaturalorProcessedReuse RecycleRed felt 1 unitProcessedNo NoAluminum1 unitprocessedNo NoBlackfoam1 unitProcessedNo NoTotalpoints444Monday, May 20, 13
  16. 16. Solar oven testing in sunTime Temperature0 min 16°C5 min 30.5°C10 min 32.5°C15 min 37.4°C20 min 37.7°C25 min 40.7°C30 min 43.4°CMonday, May 20, 13
  17. 17. Solar oven testing inshadeTime Temperature1 min 30.7°C2 min 27.7°C3 min 25.7°C4 min 23.2°C5 min 19.2°C6 min 18.9°C7 min 18.9°C8 min 18.9°C9 min 18.8°C10 min 18.8°CMonday, May 20, 13
  18. 18. Create for Design #2Our heat score is our solar oven maximumtemperature subtracted from the controloven: 43-41=2Our time score is the number of minutes ittook to cool down which was 5 minutes .Our total impact score was 12 pointsOur new total score for the solar oven is -5Monday, May 20, 13
  19. 19. ReflectionOur improved design did not work well because thematerials we used let out the heat very fast.The materialsthat we changed were poor insulators like felt and aluminumbecause they did not trap the heat inside the solar oven verylong because when we moved it in the shade the solar ovenlet out the heat and the temperature dropped.Thealuminum was probably not a good insulator because it ismade of metal and is a conductor.If we could improve again,we would take out the aluminumfoil and replace it with black foam because the aluminumfoil does not trap the heat but instead it reflects it and theblack foam traps the heat in.Monday, May 20, 13