How to make a difference - Cliimate Change and energy - How to make a solar water heater from plastic bottles - award winning system. The Ecologist | Links to PDF DIY instruction guide. Needs translation from Portuguese.
Make a Solar Water Heater for Under $5 "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."
Excellent method for heating your water off the grid. This method is not only very efficient as it uses what would otherwise be waste heat being directed out through the stack, but it also works in much the same way as a hot water on demand system or a solar water heating system. This concept can even be directly incorporated into your current solar water heating system or as a separate stand-alone in the kitchen or workshop. Keep your mind open and remember to improvise!
Instead of burning wood for heat, some Europeans now build a compost pile over plastic water lines that extract heat from the decomposing plant material. Temperatures can get as high as 149 degrees. With a circulating pump as the only moving part, the compost heater lasts an average of 12 to 16 mos. – and occasionally up to 24 mos. – providing heat and up to 80 percent of the hot water for a 1,500 sq. ft. home.