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The Renewable Energy site for Do-It-Yourselfers
Simple, Compact,
Portable
Solar Jar Cooker
From Tony:
I'd, just like to share this easy to build solar cooker. I came up with
the idea about 2-3 years ago. I wanted a easy to transport, simple to use,
light weight solar cooker for camping that actually worked. Here it
is cooking Ramen Soup. It usually takes 2 hours with good sunlight to boil
water.
The outer jar is a 1 qt mayonnaise type canning jar. I believe the
outer jar keeps heat from escaping as fast as it would without it. I've
used this in winter here in Ohio and it takes longer to cook, but as long as the
sun stays out, it will cook. I've even used it through my back window on a
stand to boil water for coffee --lol.
The cooker is made from cardboard panels, with foil glued to them. then holes
are poked through to use garbage bag tie ties to twist together to hold the
panels together. The whole thing folds up flat for easy storage/transport.
The cooking jar (a pizza jar) is made by first putting a piece of tape down the
side of the jar, next sand/ruff up the rest of exterior of jar. Next, place the
lid on jar, and using Rust-Oleum metal primer ,prime it. When the primer
has dried, paint the jar with BBQ black high temp paint. This stays
on through repeated washings. Otherwise it would scrape off every time you
washed the jar. Its very simple really. I've also used 1/2 pint
canning jars with regular sized lids as my cooking jar with equal success.
I have a few improvements I will be testing out this summer and will send in
details later on these.
Hot dog cooked in the jar cooker.
Tony
Gary June 22, 2010
