This is a great story about building a large solar water heating system using local materials and local labor. Lots of detail on the construction, and on the Pakistani culture and outstanding scenery -- you could make a TV series out of this.
Two banks of collectors thermosyphon hot water to the tank just above the collectors. |
Lots more on DIY solar water heating systems...
A couple pictures:
System diagram |
Building the collector mounts. |
Jo's Arduino based temperature logging system. |
Wow! |
Gary August 2, 2011