"Compound" parabolic solar cooker. Suggest a way forward!
I do not want this project to lie stillborn like the pulser pump did for 20 years but how to engage people? Thats the real problem. Thank you
Brian White 21st dec 2008
and it has worked really well. I would like others to try it so I made a template. I chalklined across the dome at 15 degrees intervals, Put clear plastic over it, marked the lines on the plastic and cut the plastic. Basically all you have to do is cut a piece of ply to be like the template, use it to cut out 12 mylar segments and then tape them together. (I do not know how you will hold this umbrella open, thats up to you!)
My dimension lines were vertical on the paper, it just looks angled from the picture. Figures (all in inches) are 0.5,15.5,17,31,7,12,2.5 and 3/4 just in case you cannot read them. Its a funny looking template but I think it is good enough of an approximation for this. I devided the 2 long curves into straight lines.
Should be fine. I also have a pdf file containing results, etc as the second image file. Just click on it and it should open. (solar for group.pdf) Brian