Solar Cooker Building

My solar cooker was easy enough to build, that is, if I did it right.  All there is to my new cooker is two cardboard boxes plus scrap cardboard, tin foil, duct tape, glass or plastic, and newspaper.

You take the first (smaller) box and cover it inside and out with aluminum foil.  Do this first because you have to wait for the glue to dry.

Cooking chamber with tin foil

This smaller box is going to be your cooking chamber, so be sure that your pot or pan will fit in nicely.  There should not be too much space between the top of the box and the top of the pan as this will waste heat.  The pan should be black to help absorb sunlight.  A short fat pan is better than a tall skinny pan, greater surface area directed at the sun helps absorb more sunlight also.

Cardboard stacks and some newspaper

While you are waiting for the glue to dry, make some small stacks of cardboard about 3″x3″x2″ to put between the two boxes so you can fill the space with crumpled newspaper for insulation. The first box now goes inside the larger box, sitting on the cardboard stacks, with the crumpled newspaper filling in all the gaps between the two.  This insulation should be closed in by more cardboard.  I duct taped it all around to get a pretty good seal.

The first side taped and the newspaper all around

The glass or plastic is going to be the lid to your cooker. It sits on top of the whole box you just finished and it covers the pan and cooking area.   It has to be cleat to keep the heat in while letting the sun shine through.  I used an old storm window I found.  The last step is to cover one more piece of cardboard with aluminum foil to function as a reflective backboard.  It gets propped up at an angle to reflect the sun into your cooking area.  Done!

Finished product minus the glass
Pretty ugly, isn’t it?

Save

Share This:

No Comments

Leave a Reply

Your email address will not be published. Required fields are marked *

Cooking
1
Cob Rocket Stoves: Take 2

The cob rocket stoves we built last year were our first try with the cob. They worked pretty well, but we wanted to try and make them even better this year. Here goes: The rocket stove that we bult out of fire bricks worked wonderfully.  It cost $60 though.  In …

Cooking
Down by the Stream…

We have not had good weather for building a house.  It pours and floods the house site (we don’t have the drainage set up yet), or it is 100 degrees.  It is good weather when I have to go to work.  We have had many other things we had to …

Building
3
Mini Cordwood Build: Squaring the Foundation

It has been quite a while since there has been a house update because we were having such bad building weather.  We decided to just do what we could, without making this house turn into a huge stressor.  We are plugging along, slowly, but still plugging along. Back to the …