BY CHRISTOPHER R.DESIGN A SOLAR OVEN

Monday, May 20, 13

Imagine for design #1

• Idea #1 did not work well but it kept most of the heat in the solar oven.

• Our materials are the dark cloth, and the foam plate.

• We need 1 unit for the dark cloth and 2 for the foam plates.

• The advantage of this idea are that the cloth is reusable and the foam is recyclable, the cloth absorbs more of the heat and the foam traps the heat in the solar oven, the foam is around the box.

• The disadvantage of this idea is the flame tacks more time to break down in a land fill and it will impact on our impact score.

Monday, May 20, 13

Imagine for design #1

• Idea #2 is to put foam on the bottom and the cloth on the sides of the solar oven.

• Our materials are light cooled cloth and foam plates.

• We need 2 units of light cloth and 1 unit of foam plates.

• The advantage of this idea is that the foam is now at the bottom and the cloth on the sides.

• The light cloth did not absorb that much heat.

Monday, May 20, 13

Plan for design #1 Top view

Monday, May 20, 13

Plan for design #1Side view

Monday, May 20, 13

Plan for design #1

Material Units We will use the material by

Foam 2 unitsPutting them in the side of the

box

Dark Cloth

1 unitSherd them and spread them out

Monday, May 20, 13

Design #1

Foam plate

Dark cloth

Material

Reduce Natural or processed Reuse Recycle

2 Units Processed No Yes

1 Units Processed Yes No

Units

Total Points

5

2

Our total impact score is 7 Points

Monday, May 20, 13

Solar oven testing in the sun

Time

0 min

5 min

10 min

15 min

20 min

25 min

Temperature

25

48.7

50.4

55.5

59.4

58.8

Monday, May 20, 13

Solar oven in the shade

Time

1 min

2 min

3 min

4 min

5min

6min

7min

Temperature

41.7

36.0

34.2

32.0

30.5

Monday, May 20, 13

Create for design #1

• Our heat score is our solar oven maximum temperature subtracted from the control oven: 58°c - 56° c = 3

• Our time score in the number of minutes it tuck to cool down witch was 3 min.

• Our total impact score was 7 points.

• Our total score from the solar oven is -1.

Monday, May 20, 13

Improve for design #1

• The total score from our total oven was -1 points.

• The parts of our solar oven design that worked well were the foam on the side of the box because it kept the heat from escaping the solar oven.

• The parts of our solar oven design that did not work well were the shreds of dark cloth did not work well because it was spread out to much let the heat out very easily.

• We were trying to improve our heat score.

• We will improve our heat score by putting foam on the bottom and the cloth on the sides.

Monday, May 20, 13

Plan for design #2

• Top view

Monday, May 20, 13

Plan for design #2Side view

Monday, May 20, 13

Plan for design #2

Materials Units How will you use the material

Light Cloth

1 unit Fold it

White Foam

2 units Fold it

Monday, May 20, 13

Impact score for design # 2

Design #2 Reduce

Natural or

processed

Reuse Recycle

Light cloth

Foam

1 unit Possessd No Yes

2 unitsProcesse

d Yes No

Total

Points

5

Points

2Poin

ts

Monday, May 20, 13

Solar Oven Testing in Sun

Time

0 min

5 min

10 min

15 min

20 min

25 min

30 min

Temperature

16 ° c

30.2°c

34.6°c

36.7°c

37.8°c

37.6° c

40.4° cMonday, May 20, 13

Solar OvenTesting in Shade

Time

1 min

2 min

3 min

4 min

5 min

6 min

7 min

Temperature

31.5°c

26.4°c

23.0°c

21.3°c

19.8°c

18.8°c

18.0° cMonday, May 20, 13

Create for design #2

• Our heat score is our solar oven maximum temperature subtracted from the control oven: 41-41=0.

• Our time score is the number of minutes it took to cool down witch was 4.

• Our total impact score was 7.

• Our new total score for the solar oven is -3.

Monday, May 20, 13

Reflection

• The solar oven that we designed only reached the temperature of 41°C and it was lower than last time so we did not improve that much. Also we used light cloth witch did not absorb a lot of heat and the foam was the only insulator.

• I say that our design did work. It absorbed a lot of heat but after a few minutes the temperature would not go up and cooled down really fast so it let the heat out and we want to prevent that from happening.

• If we could improve our design, we would use felt and sand because they both get hot when exposed to the sun. And they only let a little bit of heat out. The felt is also thick and sand gets really hot like for example in a beach.

Monday, May 20, 13