Aleksandar
As we plug away on this earth battery aka climate battery for the geothermal heating, we laid out the pipes and started the process of putting the dirt back in.
It took 3 days to excavate and 2 days to put 177 tons of dirt back in.
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The Neds
I like your idea of combining the PEX pipe with a solar hot water heater and the climate battery.
Looks awesome
I'm currently designing a climate battery and deciding between using culvert pipe or barrels for the manifold. Barrels would be way cheaper!