Designing a solar oven

By:"akiyah f#se

By:"akiyah f#se

Monday, May 20, 13

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

Imagine for design #1Idea #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

Plan for design #1

Top view

Monday, May 20, 13

Plan for design#1

Side view

Monday, May 20, 13

plan for design #1

MaterialHow many units it's will you need

How will you use your material

Felt 2units Keep flat

Cloth 1unit Shredded

Monday, May 20, 13

Impact score for design #1

Design#1 Reduce Natural or processed

Reuse Recycle Total

Felt 4Processed

+1No No 7

Cloth 1Processed

+1Yes No 2

9

Monday, May 20, 13

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

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

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

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

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

your material?

Felt 1 Cut it in half

Foam 2 Shred

Monday, May 20, 13

Impact score for design# 2

Design #2 ReduceNatural or processed

Reuse Recycle Total

Foam 4 Processed No Yes 5

Felt 1 Processed No No 4

9

Monday, May 20, 13

Solar oven testing in sunTime 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

Solar oven testing in shade

Time 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

Create for design # 2Our 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

ReflectionOur 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