By: Hunter Alise

Designing a Solar Oven

Monday, May 20, 13

Imagine for Design #1 • Idea #1

• Our materials are newspaper and sand and rocks.

• We need 1 unit of sand and rocks and 2 units of newspaper.

• The advantages of this idea is that rocks and sand can get really hot. Both materials have a low environmental impact and are great insulators.

• The disadvantage of this idea is that the newspaper isn't the best insulator of heat.

Monday, May 20, 13

Imagine for Design #1• Idea #2

• Our materials are cotton balls and cloth.

• We need 1 unit of cloth and 2 units of cotton balls.

• The advantages of this idea is both cotton and cloth are great insulators of heat.

• The disadvantages of this idea is that cloth does have a good amount of environmental impact.

Monday, May 20, 13

Plan for Design #1• Top View

Monday, May 20, 13

Plan for Design #1• Side View

Monday, May 20, 13

Plan for Design #1

Material Unit We will use the material by

Newspaper 2 Fold it

Rocks and Sand 1 Leave it how it is

Monday, May 20, 13

Impact Score for Design #1

Design #1 Reduce Natural or Processed Reuse Recycle Total Points

Rock and Sand 1 Units Natural No Yes 0

Newspaper 2 Units Processed Yes Yes 3

Our total impact score is 3 points.Monday, May 20, 13

Solar Oven Testing in the SunTime Temperature

0 minuets 25°c

5 minuets 43.5°c

10 minuets 46.3°c

15 minuets 54.1°c

20 minuets 57.4°c

25 minuets 60.4°c

Monday, May 20, 13

Solar Oven in the ShadeTime Temperature

1 minuet 50°c

2 minuet 42.7°c

3 minuet 38.1°c

4 minuet 36.2°c

5 minuet 35.5°c

6 minuet 34.4°c

Monday, May 20, 13

Create for Design #1• Our heat score is our solar oven maximum

temperature subtracted from the control oven:60-55=5

• Our time score is the number of minuets it took to cool down which was 6 minuets.

• Our total impact score was 3 points.

• Our total score for the solar oven was 8. 5+6-3=8

Monday, May 20, 13

Improve for Design #1• The total score for our first solar oven was 8 points.

• The parts of our solar oven design that worked well were the rocks and sand because it gave off the most heat.

• The parts of our solar oven design that did not work well were the newspaper because it made shade in the box.

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

• We will improve our heat score by taking out the newspaper and adding cloth because cloth is better insulator than newspaper.

Monday, May 20, 13

Plan for Design #2• Top View

Monday, May 20, 13

Plan for Design #2• Side View

Monday, May 20, 13

Plan for Design #2Materials Units How will you use the

materials?

Cloth 2 Cut it

Sand and Rocks 1 Leave it how it is

Monday, May 20, 13

Impact Score for Design #2

Design #2 Reduce Natural or Processed Reuse Recycle Total Points

Cloth 2 units Processed Yes No 3 points

Rocks and Sand 1 unit Natural No Yes 0 points

Total Impact Score is 3.Monday, May 20, 13

Solar Oven Testing in SunTime Temperature

0 min. 16°c

5 min. 29.8°c

10 min. 31.7°c

15 min. 34.2°c

20 min. 36°c

25 min. 37.6°c

30 min. 39°c

Monday, May 20, 13

Solar Oven Testing in ShadeTime Temperature

1 min. 32°c

2 min. 28.6°c

3 min. 25.4°c

4 min. 23.2°c

5 min. 21.9°c

6 min. 20.9°c

7 min. 20.4°c

Monday, May 20, 13

Create for Design #2• Our heat score is our solar oven maximum

temperature subtracted from the control oven: 39-41= -2

• Our time score is the number of minuets it took to cool down which was 6 minuets.

• Our total impact score was 3 points.

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

Monday, May 20, 13

Reflection• Our improved design didn't work better because we

were trying to improve our heat score but did not get close to the last heat score. The material we changed was the newspaper for cloth. We thought that dark cloth would be a better insulator because when you wear dark clothes you get hot.

• If we could improve this design again we would take out the cloth and put in more newspaper because on our design #1 newspaper was a better insulator of heat.

Monday, May 20, 13