Designing a solar ovenBy cortni fluker

Monday, May 20, 13

Imagine for design #1 page 1

• Our materials are sand,Cotten balls and foam.

• We need 1 unit of sand,1 unit of foam,and 1 unit of Cotten balls.

• The advantage of this idea is that the sunlight will go to the sand on the bottom of the box and heat up the sand and the sand will heat the box up.

• The disadvantage of this idea is that if the materials over heat then the materials will burn.

Monday, May 20, 13

Imagine design #1 page 2

• Are materials are sand,and foil.

• We need 2 units for foil,and 1 unit for sand.

• The advantage of this idea is that the sand,and the foil will heat up the box,and we will get a higher score.

• The disadvantage is that the foil will burn up and not work any more,or burn the box.

Monday, May 20, 13

Plan design #1 Top view

Monday, May 20, 13

Plan design #1

Monday, May 20, 13

Plan design #1

Materials Units We will use the materials

Cotton balls

Sand

Foam

1 unitOn top of the sand

an the bottom of the solar oven

1 unit On bottom of solar oven

1 unit On the sides of solar oven

Monday, May 20, 13

Impact score for design #1Design

#1 Reduce Natural or processed Reuse Recycle Total

points

Sand

Cotton balls

Foam

1 unit Natural Yes Yes -2 points

1 unit Processed No No 4 points

1 unit Processed No Yes 2 points

Total points 4Monday, May 20, 13

Solar oven tastingTime Temperature

0 minutes 25.0 °c

5 minutes 46.9 °c

10 minutes 47.0 °c

15 minutes 55.3 ° c

20 minutes 46.8 °c

25 minutes 55.6 ° c

Monday, May 20, 13

Solar oven in the shadeTime Temperature

1 minutes 44.8°c

2 minutes 41.2°c

3 minutes 36.9° c

4 minutes 34.4° c

5 minutes 33.0° c

6 minutes 31.7° c

Monday, May 20, 13

Create • 56.0°c - 55.0°c=1.0°c so

our heat score is 1.0°c

• It took our solar oven 4 minutes so our time score is 4 minutes

• Our total impact score is 4 points.

• Our total score for the solar oven is 1 point.

Monday, May 20, 13

Improve• The total score for are first solar oven was

1 point.

• The parts of our solar oven design that did not work well where the foam did not work as well as,and the cotton balls did not work well either because the light didn't really attract to those materials.

• The parts of our solar oven design that did work well where the sand because the sun heated up the sand and that heated up the box.

• We are going to try to improve our heat score .

• We are going to improve the heat score by putting aluminum around the sides of the box.

Monday, May 20, 13

Plan Design #2• Top view

Monday, May 20, 13

Plan design #2

Monday, May 20, 13

Plan design #2

Materials Units How will you use the materials

Sand 1 unit On the bottom of the solar oven

Aluminum foil 2 units On the side of the solar oven

Monday, May 20, 13

Impact score #2Design

#2 Reduce Natural or professed Reuse Recycle Points

Sand 1 unit Natural Yes Yes 2 units

Aluminum foil 2 units Processed No No 7 units

5 total unitsMonday, May 20, 13

Solar oven testing in the sunTime Temperature

0 minutes

5 minutes

10 minutes

15 minutes

20 minutes

25 minutes

Monday, May 20, 13

Time Temperature

1 minutes

2 minutes

3 minutes

4 minutes

5 minutes

6 minutes

7 minutesMonday, May 20, 13

Creat for design #2• Our heat score is our solar oven maximum

temperature subtract from the control oven 99-53=46

• Our time score is the number of minutes it took to cool down witch was 10 minutes

• Our total impact score was 5 points

• Our total score for the solar oven is 46+10-5=51 so our total is 51

Monday, May 20, 13

Reflection • Our improved design worked well cause our

temperature went up and that's good that means that we got better insulators. Our materials we changed were we took out the foam and added aluminum foil and took out the cotton balls. The materials worked well because we got a higher score then we did the first time.

• If we could improve again we would put shredded felt in the box because it would make the box hotter. Shredded materials makes the box hotter because it takes up more space.

Monday, May 20, 13