Forum Discussion
harold1946
May 03, 2013Explorer
BFL13 wrote:MrWizard wrote:
i belive the 'efficency' he is talking about
is amount of power converted to electricity from the , the sq meters/ft of surface area at std irradiance tests
Ok, the 230w, 7.63a Imp panel is 39.38 by 65 inches. = 2560 sq in
the "efficient" 220w, 5.6a (Imp?) panel is 31.4 by 62.2 inches.= 1953 sq in.
So to be as "efficient" for watts as the 220 the 230 would be 230/220 x 1953 = 2042 sq in instead of its 2560 sq in, so that is fine.
The amps per sq ft gets you 5.65 and 1953 so 7.29 would be
7.29/5.65 x 1953 = 2520 sq ft vs the real 2560 for the 230w Sun panel
So no big diff there. That means it is all down to the MPPT controller what really happens between the two panels for their 'efficiencies" in charging batteries (producing amps)
Watts are nice, but it is amps that charge the battery. Will an MPPT sort out the amps to "Make up" the 7.29 vs 5.65 "little problem" here?
The topic is about advances in the efficiency of PV. Nothing to do with amp out-put or charging batteries. Simply that this is the most advanced PV panels available as to efficiency.
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