Designing a solar oven By:Jaxon R

Monday, May 20, 13

Imagine for design #1Idea #1

What we imagined first was use white cloth and white foam

All together we need 3 units or less

The advantage for this idea is to use only insulators

The disadvantage for this is that the foam is far away from the least environmental impact

Monday, May 20, 13

Imagine for design #2

Idea #2

Our materials are two units of newspaper of one unit of pipe insulation

Our advantage of this idea is that the pipe insulation is thick and colored black which attracts light from the sun

Our disadvantage is of this idea is that the pipe insulation is second to last with hurting the environment

Monday, May 20, 13

Plan for design #1

Foam

Pot

Monday, May 20, 13

Plan for design #1

Cloth

Pot

Monday, May 20, 13

Plan for design #1

Material UnitsWe will use the material

by.

White Foam

White cloth

2 units=2 sheets

Shred it

1 units=1 sheets

Shred it

Monday, May 20, 13

Impact score for design for design #1Design

#1 ReduceNatural

or processed

Reuse Recycle

Foam

Cloth

1 units Processed Yes No

2 units Processed No Yes

Total points 7Monday, May 20, 13

Solar oven testing 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°cMonday, May 20, 13

Solar oven In the shade

(Time) (Temperature)

1 minute 59°c

2 minute 58.9°c

3 minute 40.3°c

4 minute 34.4°c

5 minute 32.5°cMonday, May 20, 13

Create for design #1

Our heat score is our solar oven maximum temperature subtracted from the control oven: 73.4°c - 32.5°c = 42.9°c

Our time score is the number of minutes it took to cool down which was 4 minutes

Our total impact score was 7 points

Our total score for the solar oven is 15 points

Monday, May 20, 13

Improve for design#1

The total score for our first solar oven was 15 points

The parts of our solar oven design that worked well were the inside because we were near the shade

We will improve our heat score by using better insulates

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 #2

Material UnitsHow will you use

the material?

Sand1

Put around the cup

Foam 2 Reuse

Monday, May 20, 13

Impact score for design #2

Design #2

ReduceNatural

or processed

Reuse Recycle

Sand

Foam

1 Natural Yes -2

2 Processed No 7

5 points totalMonday, May 20, 13

Solar oven testing in sun

(Time) (Temperature)

0 minutes 24.4°c

5 minutes 32.1°c

10 minutes 36.1°c

15 minutes 36°c

20 minutes 37.4°c

25 minutes 37.4°c

30 minutes 37.2°c

Monday, May 20, 13

Solar oven in shade

(Time) (Temperature)1 minute 37.1°c2 minutes 34.8°c3 minutes 34.2°c4 minutes 34.2°c5 minutes 33.1°c6 minutes 31.6°c7 minutes 30.6°c8 minutes 30.2°c9 minutes 29.7°c10 minutes 29.5°c

Monday, May 20, 13

Create for design #2

Our heat score is our solar oven maximum temperature subtracted from the control oven:37-53=16

Our time score is the number of minutes it took to cool down which was 10 minutes

Our total impact score was 5 points

Our new total score for the solar oven is -11

Monday, May 20, 13

ReflectionOur improved design did not work well because the sand did was not a good insulator. The materials we changed were cloth because we thought the sand would absorb the sunlight. The material sand was a poor insulator because it did not hold enough heat because our temperature decreased.

If we could improve again, we would go back with our first design because they were good insulators. We could also place our shredded materials differently so that the heat does not go out the holes.

Monday, May 20, 13