Today’s PDF is the Evaluation of Solar Cookers. For disaster preparedness, camping, or off grid living, solar cookers allow slow cooking and baking without any energy input beyond the sun.
This is a very cool concept. I even took some time to build my own solar oven to use in my front yard.
Unfortunately, design matters, and a poorly designed or cheaply constructed solar cooker does not work. Well designed and constructed cookers are expensive.
That is why documents like this are important, they keep you from wasting money buying a cooker that doesn’t work well.
For those not familiar with the concept, wikipedia has an article on solar cookers, they say:
A solar cooker is a device which uses the energy of direct sunlight to heat, cook or pasteurise drink. Many solar cookers currently in use are relatively inexpensive, low-tech devices, although some are as powerful or as expensive as traditional stoves, and advanced, large-scale solar cookers can cook for hundreds of people.
Because they use no fuel and cost nothing to operate, many nonprofit organizations are promoting their use worldwide in order to help reduce fuel costs (especially where monetary reciprocity is low) and air pollution, and to slow down the deforestation and desertification caused by gathering firewood for cooking.
Besides this free PDF, Solsource also has an online evaluation of solar cookers.Evaluation of Solar Cookers