I am trying to do an experiment and see if I can use PV panel heating for a water tank. The problem is the PV panel is only 10 W. What would be the maximum resistance that I can attach to it to see some changes in water temperature, and what kind of resistance?
I was thinking of an aquarium resistance but I don't know if I can find something rated under 10 W.
Parameters of my panel are:
Pmax: 10 W; Maximum Power Current: 0.57 A; Maximum Power Voltage: 17.49 V; Short Circuit Current: 0.61 A; Open Circuit Voltage: 21.67 V; Maximum System Voltage: 1000 V.