1. Solar Ovens

2. Three Types Heat Trap boxes Curved Concentrators (parabolics)
Panel Cookers
There are many variations on these basic types
Also, large scale solar cooking systems have been developed to meet the needs of people worldwide

3. Basic Principles Sunlight as Fuel (Energy source)
Solar cooker needs an outdoor spot that is sunny for several hours and protected from strong wind
They don’t work at night or if it is cloudy

4. Convert sunlight to heat energy
Dark surfaces get very hot in sunlight whereas light surfaces don’t
So food cookers should be dark, shallow, thin metal pots with tight fitting lids

5. Retain Heat
Transparent heat trap around the dark pot lets un sunlight but keeps in the heat
Things that can be used: clear heat resistant plastic bag or large inverted glass bowl

6. Capture Extra Sunlight
More shiny surfaces the better to capture extra sunlight to increase heat potential

7. Box Cooker

8. Curved Concentrator Cooker

9. Panel Cooker

10. Building Instructions
Use one of these three as a model and make it your own – be creative
Before beginning make a plan! Decide what your cooker will look like and what you need to make it
Don’t waste time! It is not a fast project and it pays off to finish this class