I don't know which one works the best, but here's a wide variety of solar cookers, from simple to complex.
Im sure you machinist types can cook up better ones
Gunner
That rifle hanging on the wall of the working-class flat or labourer's cottage is the symbol of democracy. It is our job to see that it stays there. - George Orwell
Gunner wrote in news: snipped-for-privacy@4ax.com:
I always wanted to convert an old 8'-12' TV satellite antenna to a solar cooker, being a pretty accurate parabola, I imagine. Anyone here ever done it?
||Gunner wrote in ||news: snipped-for-privacy@4ax.com: || ||> ||> ||> I don't know which one works the best, but here's a wide variety of ||> solar cookers, from simple to complex. ||> ||>
Hey Gunner, welcome back.
Converting old dishes for solar heating is a frequent topic on the alt.solar NGs. Google it up and you will have a lot of info.
Texas Parts Guy
just cover the surface with shiny aluminum foil and mount something to hold your pot at the focal point. Use a dark pot.
John
Drawing a light vacuum on a silver mylar "drum head" on a round wash tub will generate a catenary curve which is very close to a parabola.
Should be able to suck it to shape instead of having a pump. "Wash tub" only has to be as deep as the mylar dips. Might be easier to handle.
Just a thought.
Regards,
Stan-
Liquid sodium, a 10 Mw power generation site :
When I was a kid (35 years ago) I bought a book from the school bookmobile on solar cooking. The reflector they had plans for used cardboard wedges covered with aluminum foil. The dish was about 4 feet across and had a focal spot about 1 foot in diameter.
Reminds me of an SF story:
--=20
-JN-
"Stanley Dornfeld" wrote: Drawing a light vacuum on a silver mylar "drum head" on a round wash tub will generate a catenary curve which is very close to a parabola. (clip) ^^^^^^^^^^^^^ "Sorry, folks, dinner will be a little late. My vacuum system has a slow leak, and my oven went out of focus."
PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.