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Compound parabolic reflectors for solar cookers
I have made a compound parabolic solar cooker and it worked really well, heating food for up to 3 hours without moving the dish. I wish to spread the idea far and wide. Pictures and animated gifs will come later.
- -Brian White
Understanding the Market
the drawing shows the elevation, and plan of a half section of the 45 degree (up to 3 hour cooking time) compound parabolic dish. The cooking pot is to fit in the area between the focus and the top of the elevation. Distances are taken from the elevation onto the plan and then the stretched out template is shown on the right hand side. It uses the equal 1 cm measurements from the elevation and the width of the petal at that point to make the stretched out template. Stick 12 of them together and you have your dish!
The initial goal is to provide numbers for the template. 12 equal segments will make the dish. Stick the segment petals together and you have your compound parabolic cooking dish! To use the template, you find the diameter of your cooking pot and divide by 6.5 cm (the distance from the focus in my elevation to the top of the dish. Multiply this figure by the figures below to get your petal template!
The petals will be designed initially with technical drawing techniques. Later if anyone takes an interest designs with cad programs and more accurate figures can replace them.
I must await the interest in the project for conclusions.
gaiatechnician at yahoo dot com
See also CPCs