Published on May 9, 2009
Parabolic Solar Cookers • Lonny Grafman • Most Images from Appropedia • Outline – Background – Basics – Design Examples – More Examples – Math and Physics Resources – Discussion
Solar Box Cooker aka Solar Oven
Solar Parabolic Cooker
y=ax2 y f=1/(4a) f x
The Parabola - Definition http://www.cut-the-knot.org/ctk/Parabola.shtml#Theorem1
The Parabola - Reflection http://www.cut-the-knot.org/ctk/Parabola.shtml#Theorem1
The Parabola Paraboloid
Design Criteria: Design Objective: •Use of local materials •Efficiency To create a solar cooker •Durability from local invasive species •Ease of use and waste materials that •Ease of construction can pasteurize water and •Cost be a cooking alternative to •Impact on environment the use of fossil fuels. •Impact on lifestyle
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 • Appropriate focal point size • Glasses and gloves • Deep dish focus • Physical barrier • Physical separation • Appropriate system size
Define the Problem Test and Gather Implement Information the Engineering Solution Design Process Analyze Generate and Select Alternative a Solution Solutions
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Parabolic Solar Cooker: Cantinawest's "Solar Burner" 1 ... The solar burner has a diameter of almost five feet, which produces a high output of energy ...
Parabolic solar cookers concentrate sunlight to a single point. When this point is focused on the bottom of a pot, it can heat the pot quickly to very high ...
These types of cookers did not become very popular, but The German News, 38 (June-July): 5-6, 1997, informs that 180 m 2, parabolic concentrators have been ...
a parabolic solar cooker for unattended cooking . li-yan zhu and yun k. kim . introduction . parabolic solar cookers are very efficient. however ...
Information Pamphlet Parabolic Solar Cookers Learn about parabolic solar cookers and box ovens: •Advantages of cooking with solar energy. _ Average cooking
SolSource, a consumer parabolic solar cooker. An array ofScheffler parbolic cookers installed on the Shirdi Saibaba temple in Shirdi ...
A parabolic cooker Cardboard base: English, French Wood base: ... See also: Plans for many more solar cookers on the Solar Cookers World Network Wiki.
See also the Parabolic solar cookers category. for subtopics, how-tos, project pages, designs, organization pages and more.
History. Barefoot College set up the Women Barefoot Solar Cooker Engineers Society (WBSCES) in Tilonia, Rajasthan in November, 2003. It is the first ...
Product Features Award Winning Solar Cooker! - As seen on Top Chef. Cooks delicious food!