While it is loosely based on the $1K design, it has a number of unique features that are aimed at achieving a long and maintenance free life.
Chris built the single pass heat exchanger form 3/4 inch copper pipe using soldered elbows to provide a hundred ft of effective length.
|Making the heat exchanger|
A MAXDTC controller was used to provide good control flexibility and to provide data logging for the system.
Chris worked out a ramp arrangement to get the 150 lb collectors up on the roof. There is also a good description of the very nice mounting system.
|Ramp and sleds being used to move collectors up to roof.|
May 14, 2014