Solar roaster on top of grill
This link provides the instructions on building a solar marshmallow roaster. Read the whole page and look at the picture of what a large fresnel lens can do to pennies in 3-4 seconds.
Inside of Solar RoasterBuilt September 2010 - Louisville, KY
This can be accomplished with the following materials: fresnel lens magnifier (like this one at amazon.com), cardboard box, coat hanger, aluminum foil, glue and tape.
On a partly cloudy day, this roaster got a marshmallow to 160 degrees F. In future tests hopefully it will get hotter.
Update: BE CAREFUL WITH SOLAR COOKERS!This one was left unattended and when checked on it a hole had burnt into the cardboard on the side leaving the aluminum foil exposed.
On a partly cloudy day, this roaster got a marshmallow to 160 degrees F. In future tests hopefully it will get hotter.
Update: BE CAREFUL WITH SOLAR COOKERS!This one was left unattended and when checked on it a hole had burnt into the cardboard on the side leaving the aluminum foil exposed.
Wow! Great news. Adding this to my list of places to visit.Solar panel cleaning Ipswich You made the investment so why not keep your Solar Panels producing at Maximum Power.
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