Page 49 - Analysis and Design of Energy Geostructures

18 Analysis and Design of Energy Geostructures

these systems are for district heating, but heating of large industrial or agricultural con-
structions can also be conveniently achieved.
Petrothermal systems also extract groundwater through open wells, but from deeper
depths than hydrothermal systems (from a depth of z 5 4000 6000 m). The tempera-
ture and thermal energy present in the water at these depths can be used for large-
scale electrical power production and supply.

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