Cooking Time: About 1.5 hours
MRE's AND PREPACKAGED FOODS
Preparation: For foods in dark containers, simply place the
Container in the cooking bag in place of the black cooking
jar.
Cooking Times: Cooking time varies with the amount of food and
darkness of package.
X. How to Use the Solar Funnel as a Refrigerator/Cooler
A university student (Jamie Winterton) and I were the first to
demonstrate that the BYU Solar Funnel Cooker can be used--at
night --as a refrigerator. Here is how this is done.
The Solar Funnel Cooker is set-up just as you would during
sun-light hours, with two exceptions:
1. The funnel is directed at the dark night sky. It should not
"see" any buildings or even trees. (The thermal radiation from
walls, trees, or even clouds will diminish the cooling effect.).
2. It helps to place 2 (two) bags around the jar instead of just
one, with air spaces between the bags and between the inner bag
and the jar. HDPE and ordinary polyethylene bags work well,
since polyethylene is nearly transparent to infrared radiation,
allowing it to escape into the "heat sink" of the dark sky.
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