1. Designing a solar oven
By
Jayce Chesworth
Monday, May 20, 13

2. Imagine for design #1
Idea #1
We are using shredded white cloth and
putting it on the on sides and
shredded foam on the bottom
We have 1 unit of cloth and two units
of foam
The advantages to this are foam is a
Monday, May 20, 13

3. Imagine for design #1
Idea #2
We are using shredded newspaper
on the bottom and shredded pipe
installation on the sides.
We need 2 units of newspaper
and 1 unit of pipe installation
The advantages of this idea is
that the pipe installation is thick
and black witch absorbs heat
The disadvantages of this idea
is that the pipe installation is a
harmful to the environment.
Monday, May 20, 13

4. Top view
Pot
Monday, May 20, 13

5. Side view
Monday, May 20, 13

6. Material Units
We will use
the material
by.
Foam 2 units
We will put at
the bottom of
the box
White cloth 1 unit
We will put it
on the side of
the box
Monday, May 20, 13

7. Design
#1
Reduce
Natural
or
processed
Reuse Recycle
Total
points
Shredded
White
cloth
Shredded
Foam
1 unit
+1
Processed
+1
Yes
-1
No
+1
2
2 units
+4
Processed
+1
No
+1
Yes
-1
5
Over all score 7
Monday, May 20, 13

8. Temperature in the sun
Time Temperature
0 minutes 25°C
5 minutes 58.9°C
10 minutes 65°c
15 minutes 73.4°c
20 minutes 69.4°c
25 minutes 70°c
30 minutes 73.5
Monday, May 20, 13

9. Temperature in the shade
Time Temperature
1 minute
2 minutes
3 minutes
4minutes
5 minutes
59
48.2
40.3
34.4
32.5
Monday, May 20, 13

10. Create for
design#1
Our heat score is our solar oven maximum
temperature subtracted from the control
oven:73°C-55°C=18°C
Our time score is the number of minutes it
took to cool down
Our total impact score was 7 points
Our total score for the solar oven is 15
points
Monday, May 20, 13

11. Improve for
design#1
The total score for our solar oven was 15 points.
The parts of our solar oven design that worked well
were flat foil because it reflected the light good.
The parts of our solar oven design that did not
work well was the inside because we were near the
shade.
We are going to try to improve our heat score.
We will improve our heat score by using better
insulators.
Monday, May 20, 13

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

13. Side view
Monday, May 20, 13

14. Plan for design#2
Material Units
How will you
use the
material?
Foam
Sand
2
Put it at the
bottom and
the sides
1
Put it around
the pot
Monday, May 20, 13

15. Impact score for
design #2
Design
#2
Reduce
Natural or
processed Reuse Recycle
Total
score
Foam
Sand
2 units
4 points
Processed
1point
No
1point
No
1point
7points
1 unit
1point
Natural
-1point
Yes
-1point
Yes
-1point
-2points
Over all score is five points
Monday, May 20, 13

16. Solar oven testing
in the sun
Time Temperature
O minutes 16.0°C
5 minutes 34.5°C
10 minutes 36.3°C
15 minutes 36.7°C
20 minutes 37.5°C
25 minutes 38.3°C
30 minutes 39.1°C
Monday, May 20, 13

17. Solar oven testing
in the shade
Time Temperature
1 minute 31.5°C
2 minutes 28.6°C
3 minutes 26.2°C
4 minutes 24.2°C
5 minutes 23.5°C
6 minutes 22.6°C
7 minutes 22.1°C
8 minutes 21.7°C
9 minutes 21.2°C
10 minutes 20.8°C
Monday, May 20, 13

18. Create for design #2
Our heat score is our solar ovens
maximum temperature subtracted from
the control oven:39.0°C-41.0°C=-3.0°C
Our time score is the number of minutes it
took to cool down witch was 8minutes
Our total Impact score was 5 points
Our new total score for the solar oven is 1
Monday, May 20, 13

19. Reflection
Our improved design did not work because
the sand was not a good insulator. When we
had cloth, it held in the heat but the sand did
not trap much heat inside the oven. We know
this because our highest score with sand was
39.1°C and our highest with cloth is 73.5°C.
If we were to improve our design again I
would take the sand out and put the cloth
back in because it held in a lot of heat.
Monday, May 20, 13