I'd like opinions please. I know it's small and won't catch much sun, but it's a prototype and cost me less than $5. I'm just learning right now.
1/2" CPVC painted with flat black grill paint, 1/2" Tees on the bottom, 3/4" - 1/2" Tees on the top. Hot water exits top left, cold in bottom right.
The box is 2x4s with a 7/16" OSB back, painted black inside and a framed double pane window lid. The corrugated stuff is aluminum siding painted black grill paint.
The pipe spacing is 2.5". It all works out to about 3sqft of collection. I plan to heat a small 1gal tank to learn.
Do you see any obvious problems with this?
Is the 3/4" CPVC top line reasonable? should it be the same 1/2" CPVC as the rest or larger than 3/4"?
I was thinking it might work well to put a piece of 1/2" foam sheet I have behind the siding.