Reflectors

[Magnar]

This is the forum to discuss refelctors, technique, methods and materials

[Sam Crow]

Does anyone have experience with Galvalume? It is a newer popular material for use as roofing and for metal buildings replacing galvanized steel.

[Magnar]

Is the material suitable as an reflector?

Magnar

Sam Crow said:

Does anyone have experience with Galvalume? It is a newer popular material for use as roofing and for metal buildings replacing galvanized steel.

[Brian White]

http://www.instructables.com/id/Method-for-designing-reflectors-for... is a new "instructable" I made it to help people design reflectors with known "acceptance angles" It is a low tech design method (and it is not yet compete). I am currently making the first reflector design but I have not figured out just yet how to keep things in place as I adjust them.
Basically I want a reflector that collects lots of energy and sends it all to my cooking pot for an extended time. And I do not want to "watch the pot". Turn it on, point it correctly, and come back when it is cooked.
What might these reflectors look like? http://en.wikipedia.org/wiki/File:Horn_Antenna-in_Holmdel,_New_Jers... is somethat similar in shape.
Also, if you go 5 minutes into this video http://www.ted.com/talks/bill_gross_on_new_energy.html
Then pause the video at about 5 min 50.
You will see "6 tuba-like horns".
So far with the solar designer I have the beginnings of 2 horns in line with the path of the sun (not 6). (Gross used different parameters).
Please take a look. 2 partly develloped "tuba-like horns might be an alternative to parabolic dishes that would cut back on flash damage to the eyes too.
Brian