Use of a rail tunnel for harnessing geothermal energy - Client: HL-AG, Eisenbahn-Hochleistungsstrecken AG, Vivenotgasse 10, 1120 Vienna - Project partners: Technical University of Vienna, Institute of Foundation Engineering & Soil Mechanics Karlsplatz 13/221, 1040 Vienna IC-Consulenten Kaiserstrasse 45 1070 Vienna enercret installation: Piled retaining wall with piles in DN 120 cm, 20 m length, every third pile equipped with piping, 59 piles equipped in total. Energy used for the Hadersdorf Sports Junior High School. - Heating capacity: 100 kW - Annual heating output: 144 MWh Benefits of the USE of geothermal energy obtained from tunnel structures: The use of geothermal energy obtained from tunnel structures represents the optimal combination of transport engineering and energy benefits. Since as a rule only minimal additional measures are required for this application, high synergy effects can be realized which have both business and economic implications: the tunnel owner now has an additional area of value creation to exploit, while the economy profits from a cost-efficient energy source, primary energy can be saved and emissions reduced. The heating/cooling energy obtained can be put to the following concrete uses: - Heating and cooling of buildings (own or third party) - Ice prevention in exposed zones (bridges, platforms, stairs, etc.) - Cooling of equipment, machines, cable ducts, etc. - Heating of points and other installations which are sensitive to cold temperatures Project sheet download: To download the PDF file, please click here .* ) * ) To view PDF files you will need the Adobe Acrobat Reader. If you do not have this software, you can download the Acrobat Reader here free of charge.