edpell
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wikipedia gives us
"Geothermal gradient is the rate of increasing temperature with respect to increasing depth in the Earth's interior. Away from tectonic plate boundaries, it is 25–30°C per km of depth in most of the world."
Seems like a great source for a community heat pump for heating in winter.
"Geothermal gradient is the rate of increasing temperature with respect to increasing depth in the Earth's interior. Away from tectonic plate boundaries, it is 25–30°C per km of depth in most of the world."
Seems like a great source for a community heat pump for heating in winter.