solar water heating | Shifting Solutions.
August 6, 2006I attached a HOBO data logger to the system so I could monitor the performance of the system. I made up my own sensor probes to monitor the temperature coming into the Wand and out, the temperature at the top of the tank, and the PV voltage (to track the solar exposure). The HOBOware software allows me to produce a very clear graph of my first full day. The outdoor temperatures peaked in the mid ’70’s and there were no clouds. We used hot water in a normal way, and the graph clearly shows a significant solar contribution (green line). I will add more graphs as I tweak the system.