2. Imagine For Design # 1
• Idea #1 Dark cloth for the bottom
absorbs heat good-1 sheet. Cotton balls
for a low impact score-2 cups.
• Our materials are dark cloth and cotton
balls.
• We need 1 unit of cloth and 2 units of
cotton balls.
• Our advantage of this idea is that the
cloth will absorb all the heat and be a
good insulator.
• Our disadvantages of this idea is that the
other heat that the cloth doesn't absorb
will bounce of the cotton balls won't
absorb it and will bounce out.
Monday, May 20, 13
3. Imagine For Design #1
• Idea #2 Light colored cloth for
the sides-1 unit. Colored shredded
foam for good insulation-2 units.
• Our materials are light colored cloth
and shredded colored foam.
• We need 2 units of colored foam and
1 unit of light cloth.
• The advantage is that the light cloth
will bounce of and the foam will
absorb it all.
• The disadvantage is the foam won't
absorb all of it and let some of it out.
Monday, May 20, 13
6. Plan For Design #1
Materials Units
Will we use the
material
Dark cloth 1 unit
We will put it on
the bottom for
more heat absorb
Cotton balls 2 cups
We will put them
on them on the
side
Monday, May 20, 13
7. Impact Score For Design #1
Design
#1
Reduce
Natural
or
processed
Reuse Recycle
Total
points
Dark
cloth
Cotton
balls
1 units Processed Yes No 2
2 units Processed No No 7
Ou total impact score is 9 points
Monday, May 20, 13
8. Solar Oven Testing in The Sun
Time Temperature
0 minutes 25°C
5 minutes 52.4°C
10 minutes 52°C
15 minutes 54°C
20 minutes 55.7°C
25 minutes 54.6°C
Monday, May 20, 13
9. Solar Oven Testing in The Shade
Time Temperature
1 minutes 47.7°C
2 minutes 41.9°C
3 minutes 36.7°C
4 minutes 34.8°C
5 minutes 32.7°C
6 minutes 31°C
Monday, May 20, 13
10. Create For Design #2
• Our heat score is our solar oven maximum temperature
subtracted from the control oven 56°C-55°C= 1°C.
• Our time score is the number of minutes it took to cool
down which was 4 minutes.
• Our total impact score was 9 points.
• Our total solar oven score is -4 points.
Monday, May 20, 13
11. Improve For Design #1
• The total score for our solar oven is -4 points .
• The parts of our solar oven design that work well were our dark
cloth because it absorbed some heat.
• The parts of our solar oven design that didn't work well were our
cotton balls because they didn't absorb any heat.
• We are going to try to improve our heat score by getting dark foam
and cloth.
• We will improve our heat score by shredding the two sheets of foam
for more insulation, and light cloth because it will reflect the heat
and make the foam absorb the heat.
Monday, May 20, 13
14. Plan For Design #2
Materials Units
How will you use
the material
Felt
Foam
(Black)
Foam
(Colored)
1 unit
We will put it on
the bottom
1 unit
We will tape it to
the felt for more
insulation
1 unit
We will cover the
sides with them
Monday, May 20, 13
15. Impact Score For Design #2
Design
#2
Reduce
Natural
or
processed
Reuse Recycle
Total
score
Felt 1 unit Processed No No 4
Colored
foam
1 unit Processed No Yes 2
Black
foam
1 unit Processed No No 4
Monday, May 20, 13
16. Solar Oven Design #2 in The Sun
Time Temperature
0 minutes 16°C
5 minutes 25.9°C
10 minutes 27.9°C
15 minutes 28.5°C
20 minutes 30.3°C
25 minutes 39.1°C
30 minutes 40.4°C
Monday, May 20, 13
17. Solar Oven Design #2 in The Sun
Time Temperature
1 minute 31.9°C
2 minutes 26.0°C
3 minutes 23.0°C
4 minutes 21.0°C
5 minutes 19.7°C
6 minutes 18.8°C
7 minutes 18.2°C
8 minutes 17.7°C
9 minutes 17.3°C
10minutes 17.1°C
Monday, May 20, 13
18. Create For Design #2
• Our heat score is our solar oven maximum temperature
subtracted from the control oven:40-41=-1.
• Our time score was the number of minutes it took to cool
dawn which was 4 minutes.
• Our total impact score was 10 points. Our new total score
for the solar oven is -7.
Monday, May 20, 13
19. Reflection
• Our improved design didn't work because the black and
green foam wasn't able to insulate the heat very well and
most the heat got out. We know this because our
temperature dropped quickly when cooling in the shade.
• If we could improve again, we would get some newspaper
and put it on the sides and a little on the bottom (2 sheets).
We would get 1sheet of felt for the rest of the bottom.
We'll get rid of the black foam and green foam because
they were a poor insulation because we did not put them
in the right spots in our solar oven.
Monday, May 20, 13
