• Like
Emma r.
Upcoming SlideShare
Loading in...5
×
Uploaded on

 

More in: Business , Technology
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads

Views

Total Views
28
On Slideshare
0
From Embeds
0
Number of Embeds
0

Actions

Shares
Downloads
0
Comments
0
Likes
0

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. DESIGNING A SOLAR OVENBY: EMMA ROBERTSMonday, May 20, 13
  • 2. Imagine For Design #1• Idea #1• Our materials are foam, sand and cotton balls• We need one unit of each.• The advantage of this idea is that foam and cotton aregood insulators. Sand and cotton have a low impact score.• The disadvantage of this idea is foam has a highenvironmental impact and it is not recyclable. Cotton isalso not recyclable.Monday, May 20, 13
  • 3. Imagine For Design #1• Idea #2.• Our materials are foam, cotton balls and white cloth.• We need one unit of each material.• The advantages of this idea are cotton and cloth have lowimpact scores are good insulators and can be reused.• The disadvantages of this idea are that foam has a highimpact score. Cotton and cloth and foam can not berecycled.Monday, May 20, 13
  • 4. Top ViewPlan #1Monday, May 20, 13
  • 5. Side viewMonday, May 20, 13
  • 6. Plan for design #1Material UnitsHow willyou use itFoam 1We will put it onthe bottom.Cloth 1We will put it onthe sides.Cotton balls 1We will put it onthe top.Monday, May 20, 13
  • 7. Impact Score For Design #1Design#1Reduce Reuse RecycleNatural/Processed# ofpointsCottonBallsFoamWhiteCloth1 unit No No Processed 41 unit Yes No Processed 11 unit Yes No Processed 2Our total impact score is____ points.Our total impact score is____ points.Our total impact score is____ points.Our total impact score is____ points.7Monday, May 20, 13
  • 8. Solar oven testing in the sun.Time Temperature0 min. 25°c5 min. 37.9°c10 min. 41.3°c15 min. 56.6°c20 min. 59.4°c25 min. 60.3°cMonday, May 20, 13
  • 9. Solar oven in the shade.Time Temperature1 min. 42.7°c2 min. 35.8°c3 min. 32.1°c4 min. 31.2°c5 min. 32.1°c6 min. 31.1°c7 min. 30.7°cMonday, May 20, 13
  • 10. Create for design #1• Our heat score is our solar oven maximum temperature subtractedfrom the control oven: 60c - 55c =5• Our time score is the number of minutes ittook to cool down which was 2 minutes• Our total impact score was 7 pointsTotal score5+2-7 =Score5270Monday, May 20, 13
  • 11. Improve for design #1• The total score for our first solar oven design was 0.• The parts of our solar oven that worked well were theinsulators because they allowed the temp. to increase to60°c.• The time score didnt work out well because the oven tooka short time to cool down.• We will improve our time score by making sure to cover allthe holes where heat may escape in the box.Monday, May 20, 13
  • 12. ClothPlan For Design #2Monday, May 20, 13
  • 13. Plan for design #2 (side view)Monday, May 20, 13
  • 14. Plan for design #2Material UnitsHow will we usethe materialWhite Foam 1Cut into pieces(On the sides)Cotton Balls 1Leave normal(On the top)Sand 1Leave normal(On the bottom)Monday, May 20, 13
  • 15. Impact score for design #2Design#2Reduce Reuse RecycleNatural/processedTotalpointsWhiteFoamSandCottonballs1 pointNo(+ 1)Yes(- 1)Processed(+ 1)2 points1 pointYes(- 1)Yes(- 1)Natural(- 1)0 points1 pointNo(+ 1)No(+ 1)Processed(+ 1)4 pointsOur total impact score was 6 points.Monday, May 20, 13
  • 16. Solar oven testing in the sunTime Temperature0 min. 16°c5 min. 25.9°c10 min. 27.8°c15 min. 28.9°c20 min. 29.2°c25 min. 30.1°c30 min. 30.9°cMonday, May 20, 13
  • 17. Solar oven testing in the shadeTime Temperature1 min. 27.9°c2 min. 25.7°c3 min. 24.0°c4 min. 22.7°c5 min. 21.5°c6 min 20.6°c7 min. 20.1°c8 min. 19.5°c9 min. 19.0°c10 mi. 18.5°cMonday, May 20, 13
  • 18. Create for design #2• Our heat score is our solar oven maximum temperaturesubtracted from the control oven: 31-41 = -10.• Our time score is the number of minutes it took to cooldown which was 5 minutes.• Our total impact score was 6 points.• Our new total score for the solar oven was -11.Monday, May 20, 13
  • 19. Reflection• Our improved design did not work as well as the first one. I thinkit did not work as well because we didnt have as good insulators.Although we thought that sand would reflect the sunlight andheat up the box, we didnt have enough time for the sand to heatup. Also what didnt work well was the white foam, since it wasshredded, it didnt cover the whole side of the box allowing heatto escape. The cotton balls were the only good insulators in ourbox, they filled up the whole space on the top of the box with nogaps that could let heat through.• If we could improve our design again we would use flat foam onthe sides because we think that the majority of the heat escapesout the sides. We would also continue using the cotton balls aswe have every design because a single unit can cover a whole sideof the box. We wouldnt shred anything because if we did therewouldnt be enough of the material to cover the designated space.Monday, May 20, 13
  • 20. THANKS FOR WATCHING! :)Designing a solar ovenBy: Emma RobertsBrought to you by:Have a Nice Day Inc.Monday, May 20, 13