Designing a solar ovenBy: DiegoMonday, May 20, 13
Imagine for design #1• Idea #1• Our materials are shredded white clothand putting it on the side of the Box. Weare also using shredded white foam andwe are putting it on the bottom of the box.• We need 1 unit of white cloth and 2 unitsof white foam.• The advantage of this idea is that all ofour materials are insulators and are notcolored.• The disadvantage of this idea is that theis a bit far away from the leastenvironmental impact.Monday, May 20, 13
Imagine for design #1• Idea #2• Our materials are shredded newspaperand we will put it on the bottom of the box.Our other material is shredded pipeinsulation and we will be putting it on theside of the box.• We have 2 units for shredded newspaperand 1 unit for shredded pipe insulation.• The advantage of this idea is that the pipeinsulation is thick and colored black whichabsorbs heat.• The disadvantage of this idea is that thepipe insulation is second to last withhurting the environment.Monday, May 20, 13
Plan for design #1White cloth 1 unitWe will usewhite clothby puttingit on theside of thebox.White foam 2 unitsWe will usewhite foamby puttingit on thebottom ofthe box.Monday, May 20, 13
Impact score for design #1Design#1ReduceNaturalorprocessedReuse RecycleTotalpointsShreddedwhitecloth1 unit =1 pointOurmaterialisprocessed+1 pointOurmaterialhas beenusedbefore-1 pointWe canrecycleourmaterial+1 point2pointsShreddedwhitefoam2 units =4 pointsOurmaterialisprocessed+1 pointOurmaterialhas notbeen usedbefore+1 pointWe canrecycleourmaterial-1 point5points7 points7 points7 points7 points7 points7 pointsMonday, May 20, 13
Solar oven testing in the sunTime Temperature0 minutes 25.0°c5 minutes 58.9°c10 minutes 65.0°c15 minutes 73.4°c20 minutes 69.4°c25 minutes 70.0°cMonday, May 20, 13
Solar oven in the shadeTime Temperature1 minute 59.0°c2 minutes 48.2°c3 minutes 40.3°c4 minutes 34.4°c5 minutes 32.5°cMonday, May 20, 13
Create for design #1• Our heat score is our solar oven maximumtemperature subtracted from the control oven:73.0°c - 55.0°c = 18.0°c.• Our time score is the number of minutes it tookto cool down which was 4 minutes.• Our total impact score was 7 points.• Our total score for the solar oven is 15 points.Monday, May 20, 13
Improve for design #1• The total score for our ﬁrst solar oven was 15 points.• The parts of our solar oven design that worked wellwere ﬂat foil because it reﬂected the light good.• The parts of our solar oven design that did not workwell was the inside because we were near the shade.• We are going to try to improve our heat score.• We will improve our heat score by using betterinsulators because it will help keep the box warmer.Monday, May 20, 13
Solar oven testing in the sunTime TemperatureO minutes 16.0°c5 minutes 34.5°c10 minutes 36.3°c15 minutes 36.7°c20 minutes 37.5°c25 minutes 38.3°c30 minutes 39.1°cMonday, May 20, 13
Solar oven testing in the shadeTime Temperature1 minute 31.5°c2 minutes 28.6°c3 minutes 26.2°c4 minutes 24.7°c5 minutes 23.5°c6 minutes 22.6°c7 minutes 22.1°c8 minutes 21.7°c9 minutes 21.2°c10 minutes 20.8°cMonday, May 20, 13
Create for design #2• Our heat score is our solar oven maximumtemperature subtracted from the control oven:39.0°c-41.0°c=-3.0°c• Our time score is the number of minutes it tookto cool down which was 9 minutes.• Our total impact score was 5 points.• Our new total score for the solar oven is 1.Monday, May 20, 13
Reﬂection• Our improved design did not work wellbecause we changed our cloth with sandwhich wasnt a good insulator. We could tell itwasnt a good insulator because thetemperature dropped about 40°C whenheating.• If we could improve again, we would use betterinsulators like foam pipes because it wouldkeep the heat in.Monday, May 20, 13
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