DESIGNING A SOLAR OVENBy,Zachary

Monday, May 20, 13

IMAGINE FOR DESIGN #1

• Idea#1

• Our materials are dark cloth,felt,and sand.

• We need 1 unit for sand,felt, and dark cloth.

• The advantage of are idea is that we -1 point.

• We don't any disadvantages.

Monday, May 20, 13

IMAGINE FOR DESIGN #2

• Idea #2

• Our materials are dark cloth

• We need 3 units of felt

• We can youse the the felt again after we are done with it and it has a low environmental impact.

Monday, May 20, 13

PLAN FOR DESIGN #1

Monday, May 20, 13

PLAN FOR DESIGN #1

Monday, May 20, 13

Dark cloth 1 We will use it for the bottom

Felt 1 We use it for the sides

Sand 1 We will put it around the cloth

Monday, May 20, 13

IMPACT SCORE FOR DESIGN #1

Design #1 Reduce natural or processed Reuse Recycle

Sand

Felt

Dark Cloth

1 Natural Yes Yes

1 Processed No No

1 Processed Yes No

Total

1

3

2

6Monday, May 20, 13

SOLAR OVEN TESTING IN THE SUN

Time Temperature

0 minutes 25°C

5 minutes 49°C

10minuts 49.4°C

15minuts 49.4° C

20minuts 49.4°C

25minuts 49.2°C

Monday, May 20, 13

SOLAR OVEN TESTING IN THE SHADE

Time Temperature

1 minutes 49.2°C

2 minutes 49.1°C

3 minutes 49°C

4 minutes 48.9°C

5 minutes 48.9°C

6 minutes 48.9°C

Monday, May 20, 13

CREATE FOR DESIGN #1

• Our heat is our solar oven maximum temperature subtract from the control score:49-55= -6

• Our total impact score is 6

• Can't answer any other questions because I did not collect correct data

Monday, May 20, 13

IMPROVE FOR DESIGN #1

• The total score for our solar oven was -6 points

• The parts of our solar oven that worked well was the flat felt because it kept the heat in.

• The parts of the solar oven that did not work was the sand because it did not heat the air and the dark cloth because it didn't help much to keep the heat.

• We are try to improve we will try to improve all are scores

• We will improve are time score by not messing with the solar oven and we will improve the heat score by replacing the sand with anther unit of felt.

Monday, May 20, 13

PLAN DESIGN #2 TOP VIEW

Monday, May 20, 13

PLAN FOR DESIGN #2

Monday, May 20, 13

PLAN FOR DESIGN #2

Materials UnitsHow will you

use the materials

Felt 2 I will hang it on the sides

Dark cloth 1I will sheared it and put it on the bottom

Monday, May 20, 13

PLAN DESIGN FOR #2

Design #2 Reduce Natural or processed Reuse Recycle

Felt

Dark cloth

4 Processed No No

1 Processed Yes Np

+ 7

2 =

9

Monday, May 20, 13

SOLAR OVEN TESTING IN THE SUN

Time Tempture0 minutes 16°C5 minutes 37°C10 minutes 37.4°C15 minutes 39.1°C20 minutes 42°C25 minutes 41.6°C30 minutes 43.2°C

Monday, May 20, 13

SOLAR OVEN TESTING IN THE SHADE

Time Temperature 1 minutes 35.8°C2 minutes 29.7°C3 minutes 25.7°C4 minutes 23.1°C5 minutes 21.2°C6 minutes 20.2°C7 minutes 19.3°C8 minutes 18.8°C9 minutes 18.4°C10 minutes 18.1°C

Monday, May 20, 13

CREATE FOR DESIGN #2

• Our heat score is our solar oven score maximum temperature subtracted from the control oven:43–41=2

• Our time score is the number of minutes it took to cool down witch was 5 minutes.

• Our total impact score was 9 points

• Our new total score for the solar oven is -2

Monday, May 20, 13

REFLECTION

• Our improved design worked better because we added more felt and sheared the cloth. The felt kept more heat in than the sand and the cloth did not change the heat score when sheared. We know our design worked because our overall score increased.

• If we could improve again, we would replace the cloth with newspaper because it will give us a lower impact score.

Monday, May 20, 13