Designing a solar ovenBy: Cruz FloresMonday, May 20, 13
Imagine for design #1Idea #1Our materials are shredded foam weput it on the bottom shredded felt weput it on sides and we also neededshredded cloth and we out it on theopposite sides.We needed 1 unit of everything.The advantages of this idea is most ofour materials are insulators, therefore keeping the heat inside, and mostare in the least environmental impact.The disadvantages of this idea is foamhas a big environmental impact.Monday, May 20, 13
Imagine for design #1Idea #2Our materials are shredded cloth ontow sides also shredded felt on thebottom and shredded with foam onthe other sides.We needed 1 unit for everything.The advantages of this idea is theseare insulators and they have littleenvironment impact.The disadvantages of this idea iswe would prefer to use threedifferent materials but the thirdmaterial had to much environmentimpact so we chose a different one.Monday, May 20, 13
Plan for design #1MaterialsHow many units willyou need?How will you use thematerial?Cloth 1 unit = 1 sheets ShredFelt 1 unit = 1 sheets ShredWhite foam 1 unit ShredMonday, May 20, 13
Impact score for design #1Design #1 Reduce Natural orProcessedReuse Recycle PointsCloth 1 unit Processed Yes No. 2pts.Felt 1 unit Processed No No 4pts.Whitefoam1 unit Processed No Yes 2pts.Monday, May 20, 13
Solar oven testing in thesunTime Temperature0 minutes 25°C5 minutes 38.9°C10 minutes 47.7°C15 minutes 50.0°C20 minutes 54.3°C25 minutes 65.5°CMonday, May 20, 13
Solar oven in the shadeTime (minutes) Solar Oven Temperature1 minute 63.8°C2 minutes 50°C3 minutes 40.5°C4 minutes 33.6°C5 minutes 31.4°CMonday, May 20, 13
Create for design #1Our heat score is our solar oven maximum temperaturesubtracted from the control oven: 66°C - 55°C = 11°C.Our time score is the number if minutes it took to cooldown which as 4 minutes.It total impact score was 8 points.Our total score for the solar oven is 7.Monday, May 20, 13
Improve for design #1The total score for our first solar oven was7.The parts of our solar oven design thatworked well were out insulator workedvery well because they were light colors.The parts of our solar oven design that didnot work well were the plastic wouldalways fall from the hole in the boxbecause we didnt tape it well.We are going to try to improve our heatscore and our impact score.We will improve these scores by usingdifferent insulators that dont have a lot ofimpact. W can also use darker materials.Monday, May 20, 13
Plan for design #2MaterialsHow many unitswill you need?How will you use thematerial?Cloth 1 unit = 1 sheets ShredNewspaper 1 unit = 1 sheets CrumpleCotton 1 unit = 1 sheets Pull/shredMonday, May 20, 13
Plan for design #2Design #2 ReduceNatural orprocessedReuse Recycle PointsCloth 1 unit Processed Yes No 2pts.Newspaper 1 unit Processed Yes Yes 0pts.Cotton balls 1 unit Processed No No 4pts.Monday, May 20, 13
Solar oven testing in sunTime Temperature0 minutes 24.4°C5 minutes 40.5°C10 minutes 39.0°C15 minutes 36.2°C20 minutes 38.8°C25 minutes 54.4°C30 Minutes 55.6°CMonday, May 20, 13
Create for design #2Our heat score is our solar oven maximumtemperature subtract from the control oven:56°C-53°C=3°C.Our time score is the number of minutes it took tocool down which was 4 minutes.Our total impact score was 6 points.Our new total score of the solar oven is 1.Monday, May 20, 13
ReflectionOur improved design did not work well because the materialswe used did not trap the heat in that much.The materials we changed were poor insulators because thetotal score from last time was 7 and the second time we didare design the total score was 1. Also cotton let the heat inthat much and the newspaper let the heat pass through thatmuch. Also there wasnt that much cloth so I think it didnt geta lot of heat.If we could improve it again, we would use the same materialsas the first time because are score was 7 the first time andthe second time are score was 1 so we could of stayed withthe same materials in the first time. The materials we wereused are cloth, foam, and felt.Monday, May 20, 13
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