🌡️ Underground Strata: Geotherm, Rock Heat and Ventilation Air Temperature in a Tunnel (2D section)

Vertical section through the four underground strata of the atlas, with the natural rock temperature at depth and the air heating up along a tunnel. Set depth, surface heat flow, rock properties, airflow, machine heat and coolant, and see the air temperature at the end of the tunnel. Power, ventilation and coolant follow the 3D lab sliders, with four in-page numerical checks.