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Hannah soto


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Hannah soto

  1. 1. designing a solar ovenBy Hannah SotoMonday, May 20, 13
  2. 2. Imagine for Design #1Idea #1Our materials are foam, sand , andcotton balls.We need one unit of each material thatwe use.The advantage of this idea is that sandand cotton have a low environmentalimpact, and cotton and foam are reallygood insulators.The disadvantage of this idea is thatfoam has a high environmental impact.Monday, May 20, 13
  3. 3. Imagine for Design #1Idea #2Our materials are foam, cotton balls, and cloth.We need one unit of each of our materials.The advantage of this idea is cotton and cloth are goodinsulators and are reusable.The disadvantage of this idea is that foam has a highenvironmental impact and all our materials and nonerecyclable.Monday, May 20, 13
  4. 4. Plan for Design #1Top viewMonday, May 20, 13
  5. 5. Plan for Design #1Monday, May 20, 13
  6. 6. Plan for Design #1material UnitsWe will use thematerialCotton balls 1Leave itnormalFoam 1 ShreddedCloth 1 ShreddedMonday, May 20, 13
  7. 7. Impact score forDesign#2Design#1 ReduceNaturalprocessedReuse Recycle PointsFoamClothCottonballs1 unit Processed Yes No 41 unit Processed Yes No 11 unit Processed No Yes 27 pointsMonday, May 20, 13
  8. 8. Solar oven in the sunTime Temperature0 min 25°c5 min 37.9°c10 min 41.3°c15 min 56.6°c20 min 59.4°c25 min 60.3°cMonday, May 20, 13
  9. 9. Solar oven s the shadeTime temperature1 min 42.7°c2 min 35.8°c3 min 32.1°c4 min 31.2°c5 min 32.1° c6 min 31.1°c7 min 30.7°cMonday, May 20, 13
  10. 10. CreateOur heat score is the maximum solar overtemperature subtracted from the control oven:60 - 55= 5The time score was the number of minutes ittook to cool down which was 2 minutes.Our total score fore the solar oven was 7 pointsOur total impact score was 0 pointsMonday, May 20, 13
  11. 11. Improve for Design #1Our total score for our first solar oven was 0 points.The parts of our solar oven design the worked well were ourinsulators because they allowed the temperature to rise.The parts of our solar oven design that did not work so wellwas the time due cause it took a long time to cool down.We are going to try to improve our impact score.We will improve our impact score b covering all the holes inour oven so the heat will not escape because if it does thenthere would e no heat in the oven.Monday, May 20, 13
  12. 12. Plan for Design #2 TopMonday, May 20, 13
  13. 13. Plan for Design #2 SideMonday, May 20, 13
  14. 14. Plan for Design #2Material UNitsHow will we usethe material.Foam 1 Cut into piecesCotton balls 1 Leave them beSand 1 Leave it beMonday, May 20, 13
  15. 15. Impact score for Design#2Design #1 ReduceNatural orprocessedReuse Recycle PointsFoamSandCottonballs1 Processed No Yes 21 Natural Yes No 41 Processed No No 0Totalimpact5Monday, May 20, 13
  16. 16. Solar oven testing in thesunTime Temperature0 min 24.4°C5 min 40.7°C10 min 47.2°C15 min 46.8°C20 min 47.3°C25 min 49.9°C30 min 47.2°CMonday, May 20, 13
  17. 17. Solar oven testing in theshadeTime Temperature1 min 46.8°C2 min 47°C3 min 46.9°C4 min 46.9°C5 min 46.9°C6 min 46.4°C7 min 42.3°C8 min 72.7°C9 min 92.2°C10 min 90.1°CMonday, May 20, 13
  18. 18. Create for Design #2Our heat score is our solar oven maximumtemperature subtracted from the control oven.-3 + 10 - 6 = 1Our time score is the number of minutes our solaroven took to cool down which was 7 minutesOur total impact score was 6 pointsOur new total score for the solar oven is 1Monday, May 20, 13
  19. 19. ReflectionOur improved design did not work because thematerials that we changed werent placedcorrectly. The materials we changed were poorinsulators like the sand because it let all the heatout of our box. We changed the materials to whitefoam, sand, and cotton balls. We originally usedyellow foam, cloth, and cotton balls.If we could improve again we would use all yellowfoam because yellow foam is a good insulator. Its agood insulator because our temperature increased.Monday, May 20, 13