He sourced a used water tank from a local plumbing supply store and, after plugging a few holes to make it sound and welding on copper pipe for the taps and showerhead, he painted the exterior black, hoping the colour would help harness the natural heat of the summer sun. http://cottagelife.com/14966/inventions/sohttp://www.blogger.com/img/blank.giflar-outdoor-shower
These use sunshine to preheat domestic water. The flat panels contain a loop of thermal-conductive pipes that heat water and ferry it into the cottage. For year-round cold-climate use, the pipes usually contain antifreeze instead of water, with the captured heat transferred to the hot-water system via a heat exchanger. http://cottagelife.com/13864/diy/renovation/wiser-water-heating
How to get clean, drinkable water from your lake: http://cottagelife.com/13867/diy/renovation/water-purification
Кроме того:
solarwaterheaters.expala.com
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