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Lesly alvarado
Lesly alvarado
Lesly alvarado
Lesly alvarado
Lesly alvarado
Lesly alvarado
Lesly alvarado
Lesly alvarado
Lesly alvarado
Lesly alvarado
Lesly alvarado
Lesly alvarado
Lesly alvarado
Lesly alvarado
Lesly alvarado
Lesly alvarado
Lesly alvarado
Lesly alvarado
Lesly alvarado
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Lesly alvarado

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  • 1. Designing a solar ovenBy: Lesly AlvaradoMonday, May 20, 13
  • 2. Imagine for design #1Idea # 1Our materials are white cloth, felt, and foamWe need 1 unit of each material.The advantage of this idea is that they are allgood insulators.The disadvantage of this idea is that the whiteclothe wont absorb the heat it will bounce it.Monday, May 20, 13
  • 3. Imagine for design # 1Idea # 2Our materials are foam, and white clothWe need 1 unit of foam and 2 units of whit cloth.The advantage if this idea is that the foam will keep theheat in.The disadvantage of this idea is that the white cloth willnot absorb the heat.Monday, May 20, 13
  • 4. Plan for design # 1Top viewMonday, May 20, 13
  • 5. Plan for design # 1Side view insideMonday, May 20, 13
  • 6. Plan for design # 1Material UnitsWe will use thematerial byWhite clothWhite foamFelt1Shredded underthe foam1Not shreddedunder the pot1Shredded allaround the insidesidesMonday, May 20, 13
  • 7. Impact score for design # 1Design# 1ReduceNaturalorprocessesdReuse RecycleTotalPointsMaterialWhiteclothMaterialWhitefoamMaterialFelt1 unitProcessedYes No + 21 unitProcessedNo Yes + 21 unitProcessedNo No + 4Our total impact score is + 8 points.Monday, May 20, 13
  • 8. Solar oven testing in the sunTime Temperature0 minutes 25 c5 minutes 53.5 c10 minutes 59 c15 minutes 68.8 c20 minutes 68.7 c25 minutes 71.4 cMonday, May 20, 13
  • 9. Solar oven in the shadeTime Temperature1 minute 53.3 c2 minutes 41.9 c3 minutes 35.8 c4 minutes 33.5 c5 minutes 31.5 c6 minutes 30.3 cMonday, May 20, 13
  • 10. Create for design # 1Our heat score is our solar oven maximum temperaturesubtracted from the control oven: 71 c - 55 c = 16Our time score is the number of minutes it took to cooldown which was 3 minutes.Our total impact score was + 8 points.Our total score for the solar oven is 11.Monday, May 20, 13
  • 11. Improve for design # 1The total score for our first solar oven was 11 points.The parts of our solar oven design that workers well were theinsulation because it kept a lot of heat in.The parts of our solar oven design that did not work well was thewhite cloth because it didnt keep that much heat in.We are going to try to improve our heat score and our impact score.We will improve our heat score by using dark color cloth instead ofthe white one because dark colors absorb the heat.Monday, May 20, 13
  • 12. Plan for design # 2Top viewMonday, May 20, 13
  • 13. Plan for design # 2Side viewMonday, May 20, 13
  • 14. Plan for design # 2Material UnitsHow will youuse thismaterial?Dark color cloth 1 unitShredded underthe foamFoam 1 unitNot shreddedand under thepotFelt 1 unitShredded on 3sides on theinsideMonday, May 20, 13
  • 15. Impact Score for Design #2Design# 2ReduceNaturalorprocessedReuse RecycleTotalpointsMaterialDarkcolorclothMaterialFoamMaterialFelt1 unit Processed Yes No + 21 unit Processed No Yes + 2I unit Processed No No + 4Our total impact score is + 8 points.Monday, May 20, 13
  • 16. Solar oven testing in sunTime Temperature0 minutes 28.7 °c5 minutes 59.0 °c10 minutes 63.7 °c15 minutes 58.4 °c20 minutes 59.9 °c25 minutes 57.5 °c30 minutes 53.5 °cMonday, May 20, 13
  • 17. Solar oven testing in shadeTime Temperature1 minute 32.8 °c2 minutes 30.9 °c3 minutes 32.7 °c4 minutes 32.0 °c5 minutes 31.3 °c6 minutes 31.0 °c7 minutes 30.7 °c8 minutes 30.1 °c9 minutes 29.9 °cMonday, May 20, 13
  • 18. Create for design #2Our heat score is our solar oven maximum temperaturesubtracted from the control oven: 64-56= 8Our time score is the number of minutes it took to cooldown which was 2 minutes.Our total impact score was 8 points.Our new total score for the solar oven is 2Monday, May 20, 13
  • 19. ReflectionOur improved design did not work well because it didnot keep most of the heat in. The materials we changedwas only the cloth. The material was good because itabsorb the heat but it was a poor insulator because itdidnt keep most of the heat in. We know this becausewhen the solar oven was in the shade the temperaturewent down really fast.If we could improve again, we would put back the whitecloth because in our first design our total score was 11.Monday, May 20, 13

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