Instructables user, TheNaib, has written a tutorial on how to create a solar thermal water heater for under five dollars. It will involve a fair amount of DIY, but nothing too complicated. designed as a fun project, but with some tweaking it could
Hot water tank heated by wood burning stove. From Teach Nollaig, Tiny house in Ireland. Could be improved by adding a small sterling engine to power a circulation pump, allowing the hot water tank to be up higher [improving pressure]. Also INSULATION!
Build Your Own Soda Can Solar Heater. Perfect for heating a Greenhouse or a small garage The basic premise of the project is to build a simple box out of some stack a hundred or two black-painted soda cans inside with some adhesive, and stick a.