Here is an Instructable to make a simple, cheap, and energy efficient air conditioner with basic materials, and should cost less than 5 dollar. How it works is evaporating water in the air-conditioner pulls heat away, making the inside cold. The fan sucks air through the AC, making the air cold. The warmer it gets, the more effective this AC gets. And it’s easy on your wallet!
You can get cooling fans free from computer repair shops and are in power supplies. Once you find a suitable one (bigger ther better), stick six popsicle stick. Now cut a few strips of the cloth that absorbs well (shamwow, towel, burlap…) .Then cut using scissors four or more popsicle sticks so it’s the same size as the base width . Glue the cloth strips onto the cut popsicle sticks. Then glue that on like the main pic. Attach another stick on the opposite side and glue the cloth onto it.
Glue another of these together. Then stick two popsicle sticks together like the two back ones on the first step. Glue it on and put another stick that’s the base width size onto the other side. Stretch the cloth across and attach it to the stick.
If you have any extra cloth left, glue that on the sides. Remember: the more cloth, the better if there’s easy airflow around everything.
That was the Mini Solar A/C! Ugly but works. Add water to the cloth with a spoon until it’s all soaked up, power it up with a solar panel (one or two watts), batteries, or a low voltage power source, and cool your house.
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