Solar Heater Using Aluminum CansHow To Build a Solar Heater Using Aluminum Canshttp://www.askaprepper.com/free-heating-how-to-build-a-solar-heater-using-aluminum-cans/
Have you ever thought of how much you actually spend on heating during the winter? This original solution was created in order to reduce heating costs in places where you don’t necessarily want to achieve a constant temperature, as high as 64.4°F. It was originally found useful by farmers that needed to provide some sort of thermic comfort to their animals—and let’s face it, in a chicken coop, every degree matters. This is also true for the shelter of goats or sheep; they are resilient animals, but every extra degree you can obtain during the cold season means increased productivity and decreased costs.
But keep in mind that this method doesn’t make miracles. It works only in moderately cold temps and only in daytime.
You can actually build a solar panel out of empty aluminum cans. You can use beer cans or juice cans; it doesn’t really matter. The best thing about this project is that you don’t need expensive, fancy materials to build it. You will basically need some pieces of wood to build a wooden frame, a piece of plywood to keep the cans in place, a piece of glass, and some black paint. ---CONTINUED at LINK, above ---