pianotuna wrote:
Here is how someone has done this:
"Jim Peterson Don Rose -- Good point -- the "cool room" is an 8'x 10' stand-alone building with an 8' ceiling = 640 cubic feet of interior volume but a significant portion of that volume (?18%?) is taken up by two 250 gallon water tanks. Each tank measures about 3'6" by 4' and I'm guessing the height of the square IBC tanks is about 4'? The original plan was to slope the roof/ceiling down at the 15 degrees needed to maximize "winter" solar power yield *and* minimize interior volume at the same time . . . but that's *not* how it got built. ??
The A/C is a Midea U-shaped mini-split (8,000 BTU) which was powered by a Renogy 1,000 watt pure sine wave inverter. The larger Renogy 2,000 pure sine wave inverter has arrived and might even be installed by now. ?? We're up to 2,000 watts of solar panel and that will increase to 2,250 watts soon enough to offset the 33% loss of power we experienced on the super HOT summer days. This means we'll be massively over-paneled the rest of the year but these used solar panels we're using ($63 for 250 watts) keeps it cheap to over panel. ??
This potential for 188 amps of charge is controlled by three Renogy 100/40 charge controllers plus a 4th charge controller of comparable size (forgot the brand on that one ?? ). The inverter is fed from a bank of eight 6 volt deep cycle golf cart batteries. ?? We figure that any power yield above 160 amps will simply be "clipped" and essentially ignored as 160 amps will be w-a-y more than enough during the rest of the year (Sep thru May) when it's not so blazing hot there. :) '
