Fig. 8
From: Hydrological constraints on the potential of enhanced geothermal systems in the ductile crust
Heat extraction in NDR-EGS over an operational lifetime of 100Â years, showing the A size of the stimulated volume; B average temperature of the stimulated volume (SV); C average fluid pressure along the injection interval; D production rate; E mass-weighted average feedzone enthalpy; and F thermal energy output (MWth), calculated by multiplying the mass flow rate and the specific enthalpy. Grey bars in C show the brittle failure criterion, ductile failure criterion, and lithostatic pressure range at the depth of the modeled NDR-EGS system