5 years ago I built this hot water solar panel for my shop [View all]
It has been working great I need to build another one 20 feet long 8' tall around 900' of 3/8 pex the circulator pumps are brushless dc running off PV panels so even if the power goes out it still operates.
After the pex was in place it was covered with aluminum foil bonded to the pex with silicone then painted flat black.
In optimal sun it has produced 38,000 btu hr 3.8 gallons per min with a 20 degree rise from inlet to output. another panel this size is planned getting the time to make it is an issue.
The hot water is pumped into a 6" thick slab with 6 heating zones I have this running 3 the other 3 zone will be on the next panel
My other heat source is a woodstove. And a pellet stove I modified to burn sawdust which I make a lot of.
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