bluegoatwoods
New Member
Considering portable solar panels, my rough estimate has been about $100 for a 100 Watt panel. But I'm looking at some panel kits on Amazon at the moment and the price per Watt seems awfully low.
I would link to an example right here and now. But I'm unsure of forum rules on such stuff. I'm looking for that section in the forum as we speak. But I haven't found it yet. But maybe a description can get us where we need to be.
One vendor has several options at good looking prices. I think the brand name is LOPMQRV. An example of their options: A 3200 W kit with four 800 W monocrystaline flexible panels and two 40 A controllers. PWM, likely, though I haven't found confirmation yet. Panels are about 27 x 40 inches each.
I've been looking at it and calculating for days now. And if I understand correctly, then if I had these four panels deployed facing a good, strong sun then I might expect to draw (3200 W divided by 12 V) 267 Amps while that sun is shining on them? Or 67 A per panel. That seems huge! It also seems like it would be overpowering those controllers. So that's got me a bit suspicious.
Would I really be harvesting 3.2 Kilowatt/hours for every hour in that sun? If I had four hours of good sunlight, would I actually harvest 12.8 kw/hr in that four hours?
I guess those controllers will gobble up some of that power. But that's a detail. I ideal efficiency circumstances, are my calculations above realistic or have I overlooked something important?
The price on this particular kit is about $480. It just seems to be a good deal lower than I'd expect for that much power generation.
I would link to an example right here and now. But I'm unsure of forum rules on such stuff. I'm looking for that section in the forum as we speak. But I haven't found it yet. But maybe a description can get us where we need to be.
One vendor has several options at good looking prices. I think the brand name is LOPMQRV. An example of their options: A 3200 W kit with four 800 W monocrystaline flexible panels and two 40 A controllers. PWM, likely, though I haven't found confirmation yet. Panels are about 27 x 40 inches each.
I've been looking at it and calculating for days now. And if I understand correctly, then if I had these four panels deployed facing a good, strong sun then I might expect to draw (3200 W divided by 12 V) 267 Amps while that sun is shining on them? Or 67 A per panel. That seems huge! It also seems like it would be overpowering those controllers. So that's got me a bit suspicious.
Would I really be harvesting 3.2 Kilowatt/hours for every hour in that sun? If I had four hours of good sunlight, would I actually harvest 12.8 kw/hr in that four hours?
I guess those controllers will gobble up some of that power. But that's a detail. I ideal efficiency circumstances, are my calculations above realistic or have I overlooked something important?
The price on this particular kit is about $480. It just seems to be a good deal lower than I'd expect for that much power generation.
