1. Designing a solar oven
By:"akiyah f#se
By:"akiyah f#se
Monday, May 20, 13

2. Imagine for design #1
Idea#1
Our materials are flat felt and shredded cloth
We need 2 units of felt and 1 unit of cloth
The advantages of this idea is that felt is good
insulation.
The disadvantages of this idea is a disadvantage
is getting a high score on environmental impact.
Monday, May 20, 13

3. Imagine for design #1
Idea #2
Our materials are shredded foam and flat felt
We need 1 unit of foam and 2 units of felt
The advantages of this idea is an advantage of our
idea is that we will have better insulation that we had
for the 1st idea
The disadvantages of this idea isa disadvantage is that
foam has a high amount of environmental impact
Monday, May 20, 13

4. Plan for design #1
Top view
Monday, May 20, 13

5. Plan for design#1
Side view
Monday, May 20, 13

6. plan for design #1
Material
How many units
it's will you need
How will you use
your material
Felt 2units Keep flat
Cloth 1unit Shredded
Monday, May 20, 13

7. Impact score for design #1
Design#1 Reduce
Natural or
processed
Reuse Recycle Total
Felt 4
Processed
+1
No No 7
Cloth 1
Processed
+1
Yes No 2
9
Monday, May 20, 13

8. Solar oven testing in $ sun
Time Temperature
0 25°c
5 53.8°c
10 54.2°c
15 54.3 °c
20 55.6 °c
25 55.1°c
Monday, May 20, 13

9. Solar oven testing in $ "ade
Time (minutes) Solar oven temperature
1 47.3°c
2 42.4°c
3 37.7°c
4 35.6°c
5 34. 1°c
6 31.9°c
Monday, May 20, 13

10. Create for design #1
Our heat score for our solar oven maximum
temperature subtracted from the control oven.
56°c -55°c = 1
Our time score is the number of minutes it
took to cool down which was 4 minutes
Our total score was 9 points
Our total score for the solar oven is -4
Monday, May 20, 13

11. Improve design #1
The total score for our for our first solar oven was
The parts of our solar oven that worked well were our
time score worked the best because it took a long time to
cool down.
The parts of our solar oven that didn't work all were we
didn't have insulators that worked well.
We were going to improve our heat score
We will improve our heat score by putting better
insulation.
Monday, May 20, 13

12. Plan for design #2
Top view
Monday, May 20, 13

13. Plan for design #2
Side view
Monday, May 20, 13

14. Plan for design # 2
Material Units
How will you use
your material?
Felt 1 Cut it in half
Foam 2 Shred
Monday, May 20, 13

15. Impact score for design#
2
Design #2 Reduce
Natural or
processed
Reuse Recycle Total
Foam 4 Processed No Yes 5
Felt 1 Processed No No 4
9
Monday, May 20, 13

16. Solar oven testing in sun
Time Temperature
0 min 16.0° c
5 min 27.0° c
10 min 30.3° c
15 min 32.0°c
20 min 33.2°c
25 min 34.2°c
30 min 35.1°c
Monday, May 20, 13

17. Solar oven testing in
shadeTime Temperature
1 min 27.4°c
2 min 23.7°c
3 min 21.1°c
4 min 19.8°c
5 min 18.9°c
6 min 18.2°c
7 min 17.8°c
8 min 17.5°c
9 min 17.4°c
10 min 17.1°c
Monday, May 20, 13

18. Create for design # 2
Our heat score is our solar oven subtracted
from the control oven 35-41= -6
Our time score is the number minutes it took
to cool down which is 3 minutes.
Our impact score was 9 points
Our new total score for our solar oven is -12
Monday, May 20, 13

19. Reflection
Our improved design did not work because we
had a poor insulation.The poor insulation was the
foam, it did not keep the heat trapped in the box.
If we could improve again ,we would use the 2
units of foam for the sides and , 1 unit of cloth for
the bottom.We would use this because they are
both good insulators.
Monday, May 20, 13