The idea of this system is to provide a very easy to build DIY solar domestic water heating system that uses off the shelf collector, tank, controls, etc. -- a system in which you just install the off the shelf components rather than building your own collector and tank. The objective is to keep the total cost to about $1000 (compared to about $8000 for commercially installed systems).
The first version of this system used plastic mat style pool heating collectors installed in a horizontal format and at a not very steep tilt angle. I've decided to change to a vertically oriented mat style pool heating collector installed at a steep tilt angle. The advantages include an easier and cleaner installation, better cold season performance, less susceptibility to summer overheating, and more flexibility in trying a vented glazing system to increase winter performance without overheating.
|The new collector|
More collector area could be provided by going with a 4 by 12 collector and/or adding a 2nd collector.
|The same Softank that was used on version 1 is retained.|
|Sunny day performance|
For later in the season when ambient temperatures are lower, I intend to try some form of vented glazing to see if the winter performance can be improved over that of an unglazed collector -- stay tuned.
All the details on the build and performance to date...
If you have any ideas for improving this design, please let me know.