Solar DIY – How to Make a Solar Thermal Water Heater!

If you can either find or have an old fridge, you can easily use the back of the fridge to re-make a solar thermal water heater that can easily burn your hands.

This method doesn’t use any actual solar panels but uses a reflective surface and the heater bars of the old fridge to heat the water, pretty incredibly simple yet very effective.

A word of warning, this panel works VERY WELL. We tested it on a very sunny day and within seconds the water coming out of the panel was hot enough TO SCALD. I burned my fingers. This very hot water is only formed when the water inside the panel is allowed to sit for about a minute without moving. If the water is moving (do to the gravity siphon) the water exiting the return pipe is about 110 degrees, and while hot, will not burn you.

via treehugger

solar-water-heater-howto

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