Designing a Solar Oven By; Mariana Lopez

Monday, May 20, 13

Imagine for Design #1

Idea # 1

Our materials are we used cotton for one side. We also used newspaper for the bottom . And we also used light cloth to put it on one side.

We need 3 units.

The advantage of this idea is it will warm up a little bit faster. And they are not going to hurt the environment.

The disadvantage of this idea is that it will probably burn to much.

Monday, May 20, 13

Imagine for Design # 1

Idea # 2

Our material we are going to used foam in the bottom. And will used the cotton to the sides of the box.

We need 3 units.

The advantage of this idea it's going to cook faster.

The disadvantage of this idea it does not help the environment.

Monday, May 20, 13

Plan for Design # 1

Top View

Monday, May 20, 13

Plan for Design #1

Side of view recycling

Monday, May 20, 13

Plan for Design #1Material Units We will use the

material by

Cotton 1We are going to

put it on the side flat.

White Cloth 1We are going to put it on the side

flat.

Newspaper 1We put the

newspaper on the bottom.

Monday, May 20, 13

Impact Score for Design #1Design

1 ReduceNatural

Or Processed

Reuse Recycle Add points

CottonUnit 1 1 unit Processed No No 4 points

White Cloth1 unit

1 unit Processed Yes No 2 points

Newspaper Unit1 1 unit Processed Yes Yes 0 points

Our total impact score is 6 points.Monday, May 20, 13

Solar Oven Testing in the SunTime Temperature

0 minutes 25 °c

5 minutes 44.7 °c

10 minutes 46.3°c

15 minutes 49.4°c

20 minutes 59.7°c

25 minutes 54.9°c

Monday, May 20, 13

Solar Oven Testing in the ShadeTime ( minutes) Solar Oven Temperature

1 36.9°c2 36.3°c3 34.0°c4 33.1°c5 32.3°c6 31.0°c78910

Monday, May 20, 13

Create for Design #1

Our heat score is our solar oven maximum temperature subtracted from the control oven: 60°c -55 = 5

Our time score is the number of minutes it took to cool down which was 3 minutes.

Our total impact score was 6 points.

Our total score for the solar oven is 2.

Monday, May 20, 13

Improve for Design #1

The total score for our first solar oven was 2.

The parts of our solar oven design that work well were the cotton and the cloth because helped a little to heat it up faster.

The parts of our solar oven design that did not work well were the newspaper because did not worked well for the project.

We are going to try to improve our Heat Score Time Score Impact Score.

We will improve our Heat Score Time ScoreImpact Score by using different materials like dark cloth , foam and cotton because it will help get a high score.

Monday, May 20, 13

Plan for Design #2

Top view

Monday, May 20, 13

Plan Design #2

Side view

Monday, May 20, 13

Plan for Design #2

Materials Units How will you use the materials?

Cotton 2 unitsWe are going to put it on the two side of the box.

Foam 1 unit

We are going to put it on the

bottom of the box.

Monday, May 20, 13

Impact Score for Design #2 Design

#2 ReduceNatural

or processed

Reuse Recycle Total points

Cotton 2 units Processed No No 7 points

Foam 1 unit Processed No No 4 points

11 points in totalMonday, May 20, 13

Solar Oven Testing in SunTime Temperature

0 minutes 24.4°c

5 minutes 41.2°c

10 minutes 42.0°c

15 minutes 44.0°c

20 minutes 50.2°c

25 minutes 52.1°c

30 minutes 47.9°c

Monday, May 20, 13

Solar Oven Testing in ShadeTime Temperature

1 minute 40.6°c2 minute 34.5°c3 minute 31.1°c4 minute 29.9°c5 minute 28.5°c6 minute 28.1°c7 minute 27.6°c8 minutes 27.1°c9 minutes 27.0°c10 minutes 27.0°c

Monday, May 20, 13

Create for Design #2

Our heat score is our solar oven maximum temperature subtracted from the control oven: 52-53=-1

Our time score is the number of minutes it took to cool down which was 3 minutes.

Our total impact score was 11 points.

Our new total score for the solar oven is -1+3=-9

Monday, May 20, 13

ReflectionOur improve design did not work well because we didn't have a good insulator. The materials we changed were cloth & the newspaper. The materials were poor insulator because the cloth it was to light for the project and it didn't warm up so the cloth needed to be darker.

If we could improve again, we would change the materials because the materials were bad insulators or maybe because the ruler felt a lot of times which closed our box.

In the first design the highest temperature was 59.7°c and the second time with our improved design we got 52.1°c.

Monday, May 20, 13