Fig. 4From: An assessment of technical and economic feasibility to install geothermal well systems across UkraineGCS heat output versus time: a \(H\) = 1 km, \(Q\) = 1000 m3/day; b \(H\) = 2 km, \(Q\) = 500 m3/day; \(q\) = 60 mW/m2; \(T_{\text{out}}\) = 5 °C (red), 10 °C (green) and 15 °C (blue)Back to article page