Parabolic solar cookers
Download
1 / 14

Parabolic Solar Cookers - PowerPoint PPT Presentation


  • 122 Views
  • Uploaded on

Parabolic Solar Cookers. Lonny Grafman Most Images from Appropedia Outline Background Basics Design Examples More Examples Math and Physics Resources Discussion. 100 0 watts/m 2. Solar Box Cooker a ka Solar Oven. Solar Parabolic Cooker. The Parabola. y=a x 2 f=1/(4a). y. f. x.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Parabolic Solar Cookers' - solada


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Parabolic solar cookers
Parabolic Solar Cookers

  • Lonny Grafman

  • Most Images from Appropedia

  • Outline

    • Background

    • Basics

    • Design Examples

    • More Examples

    • Math and Physics Resources

    • Discussion






y=ax2

f=1/(4a)

y

f

x


The parabola definition
The Parabola - Definition

http://www.cut-the-knot.org/ctk/Parabola.shtml#Theorem1


The parabola reflection
The Parabola - Reflection

http://www.cut-the-knot.org/ctk/Parabola.shtml#Theorem1


  • The Parabola


  • Design Criteria:

  • Use of local materials

  • Efficiency

  • Durability

  • Ease of use

  • Ease of construction

  • Cost

  • Impact on environment

  • Impact on lifestyle

Design Objective:

To create a solar cookerfrom local invasive species and waste materials that can pasteurize water and be a cooking alternative to the use of fossil fuels.


  • Results:

  • Equation: y =.5x2

  • Time to boil quart: ~2 hrs

  • Deformation Lessons Learned:

  • more blackberry runners

  • more rigid material for rings

  • Reflectivity Lessons Learned:

  • pampas grass too lumpy

  • no dull, small can lids


Protection from dazzles and burns
Protection from Dazzles and Burns

  • Appropriate focal point size

  • Glasses and gloves

  • Deep dish focus

  • Physical barrier

  • Physical separation

  • Appropriate system size


ad