By: LanaDesigning a solar ovenMonday, May 20, 13
Imagine for Design #1Idea #1Our materials are cloth ( to line the insideperimeter of the solar oven)rocks ( to puton the bottom of the solar oven), andCotten ( to put in the side holes)We need one unit for each material.The advantages to this idea is that it will notimpact the environment a lot, the food willbe heather, and the materials are all goodinsulators.The disadvantages are that we can only useone unit each, cloth and Cotten are notnatural, and it will take longer to heat up.Monday, May 20, 13
Imagine for Design # 2Idea #2Our materials are rocks ( to line thebottom of the solar oven) and newspaper( to ﬁll the side holes and line the edge ofthe solar oven).We will need 1 unit for the rocks and 2 unitsfor the newspaper.The advantages for this idea are that ituses less materials are used, the materialsare good insulators, and will heat morequickly.The disadvantages are that the newspaperhas ink so it would be less heather.Monday, May 20, 13
Matereal Units We will use material byRocks 1Placing it on thebottom of solar ovenCloth 1Shred and place onthe edge of the solarovenCotten 1Place in side holesand place alongbottom edge of solarovenPlan for design #1Monday, May 20, 13
Solar oven in the sunTime TemperatureO min. 25°C5 min. 47.5°C10 min. 49.3°C15 min. 53.1°C20 min. 54.9°CMonday, May 20, 13
Solar oven in the shadeTime Solar oven temp.1 49.8°C2 49.8°C3 38.5°C4 38.5°C5 34.3°C6 34.3°CMonday, May 20, 13
Creat for design #1Our heat score our solar ovenmaximum Temp. Subtracted fromthe control oven: 55 - 55 = 0.Our time score is the number ofmin. It took to cool down whichwas 5 min.Our total impact score was 2points.Our total score for the solaroven is 3 pointsMonday, May 20, 13
Creat for design #2Our heat score is our solar ovensmaximum temp. Subtracted fromthe control oven: 48°C - 41°C = 7.Our time score is the number ofMinutes it took to cool downwhich was 10 min.Our total impact score was 0points.Our new total score for the solaroven is 17.Monday, May 20, 13
Improve for design #1The total score for our ﬁrst solar ovenwas 3 points.The parts in our solar oven that workedwell were rocks and Cotten becauseover time the rocks were hot and theyhelped heat the solar oven and theCotten can spread out easily so it cantrap more heat.The parts that did not work well werecloth because the cloth was in littlepieces around the box instead of layers.We are going to try to improve our heatscoreWe will improve our heat score byadding more rocks because when therocks heat up they help heat the box ifwe add more it might heat up morequickly.Monday, May 20, 13
Solar oven testing in the sunTime Temperature0 min. 16°C5 min. 46.9°C10 min. 47.1°C15 min. 47.5°C20 min. 47.5°C25 min. 47.8°C30 min. 48°CMonday, May 20, 13
Solar oven testing in the shadeTime Temp.1 min. 47.8°C2 min. 47.8°C3 min. 47.7°C4 min. 47.4°C5 min. 47.4°C6 min. 47°C7 min. 47°C8 min. 47°C9 min. 46.7°C10 min. 47°CMonday, May 20, 13
ReﬂectionOur improved solar oven did better than the original because boththe sand and the rocks helped to heat the box.The Materials that worked are sand and rocks because the sandand rocks keep heat inside themselves so they heat the box too.The material that did not work as well is the cotton because thecotton was at the bottom of the box but, maybe if we put it higheron the box it might work better.If we were to improve the solar oven agin we would keep the sandand rocks because they are good insulators and add 1 more unit tothe rocks and put the other unit of rocks on the walls.Monday, May 20, 13
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