Heat 1, MPPT 0--More on That
I have been noting that my 230w panel with MPPT is getting fewer amps to the battery lately in this hot weather, with the back of the panel at 51C according to the temp gun pointed at the white backin...
Forum Discussion
With the panel tilted up in my contraption and ambient 25C there is panel temp of 51C on the back of the cells in full sun, EVEN WITH the nice sea breeze blowing past the back of the panel at ambient of 25C.
So IMO the fan would not cool down anything. The sun on the panel top is what heats it up. I was seeing 44C on the back with ambient at 15C and the "full" 15.5amps to the battery.
The change in ambient is much greater than the change in panel temp by proportion. I have not got this all figured out, but I am not wishing it would go back to 15C this summer instead of 25C just so I can get another amp or two!!!!! :)
So IMO the fan would not cool down anything. The sun on the panel top is what heats it up. I was seeing 44C on the back with ambient at 15C and the "full" 15.5amps to the battery.
The change in ambient is much greater than the change in panel temp by proportion. I have not got this all figured out, but I am not wishing it would go back to 15C this summer instead of 25C just so I can get another amp or two!!!!! :)
