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  1. 1. DESIGNING A SOLAR OVENBy Eric WilliamsMonday, May 20, 13
  2. 2. IMAGINE FOR DESIGN ONE• Idea #1• Our materials are white foam.• We need 3 units• The advantages of using this are that when we put it on thesides we could cover the holes in the side of the box.• The disadvantages of using this are we could get a bad impactscore.Monday, May 20, 13
  3. 3. IMAGINE FOR DESIGN #1• Idea# 2• Our materials are foam and felt.• We need 1unit of foam & 2 units of felt• The advantages of felt would be the felt could hold moreheat.• The disadvantages are that felt would give us a higher impactscore.Monday, May 20, 13
  4. 4. FoamFeltTop viewMonday, May 20, 13
  5. 5. TapeFoaFeltSide viewMonday, May 20, 13
  6. 6. PLAN FOR DESIGN #1Material Units We will use thematerials byFeltFoam1Putting it in theconners and andthe bottom ofof the box2We will place thison the walls ofthe boxMonday, May 20, 13
  7. 7. IMPACT SCORE FOR DESIGN#1e materials byDesign#1Reduce Reuse Recycle Natural orprocessed TotalFoamFelt4 points No Yes Processed 51 point No No Processed 4Our total impact score is 9 pointsMonday, May 20, 13
  8. 8. Time TemperatureZero minutesFive minutesTen minutesFifteen minutesTwenty minutesTwenty-five minutes25°C32.6°C36.3°C38.1°C39.9°C40.2°CSolar oven testing in the sunMonday, May 20, 13
  9. 9. Time TemperatureOne minuteTwo minutesThree minuetsFour minutesFive minutesSix minutes39.9°C39.3°C38.1°C37.3°C36.2°C35.1°CSolar oven in the shadeMonday, May 20, 13
  10. 10. CREATE FOR DESIGN #1• Our heat score is our solar oven maximum temperaturesubtracted from the control oven: 40 – 55 = –15• Our time score is the number of minutes it takes to cooldown witch was 6 minutes.• Our total impact score was 9 points.• Our total impact score was –18 points.Monday, May 20, 13
  11. 11. IMPROVE FOR DESIGN #1• The total score for our first solar oven was –18 points.• The part that worked well on our solar oven are the reflector because itdid its only job witch was to reflect the light from the sun in to the box sothe box could trap heat.• The part of our solar oven that did not work well were the insulatorsinside the oven the reason is they let out to much heat.• We are going to try to improve our score of –18• We will improve our score by use better insulators this will trap more heatand give us a better score.Monday, May 20, 13
  12. 12. PLAN FOR DESIGN #2FoamFoilCooking potTop viewMonday, May 20, 13
  13. 13. PLAN FOR DESIGN #2FeltFoamSideMonday, May 20, 13
  14. 14. PLAN FOR DESIGN #2Materials UnitsHow will you usethe materialsRed feltAluminum foilBlack foam1Place on thebottom1 Place on the top1Shred and placeon the bottom.Monday, May 20, 13
  15. 15. IMPACT SCORE FOR DESIGN #2Design#2Reduce Reuse RecycleNatural orprocessedTotalpointBlackfoamRed feltAluminum1unit No No Processed 41 unit No No Processed 41 unit No No Processed 4Total points 12Monday, May 20, 13
  16. 16. SOLAR OVENTESTING IN SUNTime Tempeture0 minutes5 minutes10 minutes15 minutes20 minutes25 minutes30 minutes16°C30.5°C32.5°C37.4°C37.7°C40.7°C43.4°CMonday, May 20, 13
  17. 17. SOLAR OVENTESTING IN SHADETime ( minutes ) Temperature (°C)1234567891030.727.725.723.219.218.918.918.918.818.8Monday, May 20, 13
  18. 18. CREAT FOR DESIGN #1• Our heat score is our solar ovens maximum temperaturesubtracted from the control oven : 43-41=2.• Our time score is the number of minutes it took for our solaroven to cool down witch was 5 minutes.• Our total impact score was 12 points.• Our new total score for the solar oven is -5.Monday, May 20, 13
  19. 19. REFLECTION• Our improved design worked well because it trapped moreheat than last time.The materials we changed to using werered felt, aluminum foil and black foam.The materials weresomewhat good insulators because they held some heat andlet some escape and our highest temperature was 43.4°C.• If I could improve again I would make a better choice on witchmaterials I used while thinking about things insulation alongwith environmental impact instead of one or the otherbecause if i just think about environmental impact our box willnot hold nearly as much heat as it should.Monday, May 20, 13