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Technical University of Munich

study of feasibility on geothermal use at „Hauptbahnhof München“

Contact: Prof. Dr.-Ing. habil. Jochen Fillibeck

scetch of the situation

shematic scetch of soil profile and possible heat exchange surfaces.

finite-element model and boudary condition

Schematic scetch of 2D model.  Heat flux exchange surface has been
realised using flux boundary condition.

temperature distribution

Temperature distribution in     quaternary / tertiary 1.     Basis of calculation is
a heat flux of 7 W/m² over 365 days. Ground water flow has been included.

temperature hydrograph of soil

Resulting temperature hydrograph out of 2D FE-simulation.    
Representative points of calculation are shown.

time variable heat flux

Time variable heat flux. Simulation uses energy hydrograph of
“Hauptbahnhof München”

high temperature storage

schematic scetch of high temperature storage beneath base plate of
excavation 1.
Temperature distribution around the storage after 180 days. Cooling starts
at 90 °C storage temperature.

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