Use of ground-source cooling energy for new stretch of the U2 line - Client: Wiener Linien GmbH Abtlg.: Bautechnische Angelegenheiten der U-Bahn, Obere Augartenstrasse 74, 1020 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: The diaphragm walls with an overall length of 306 m and a depth of 24 m plus the ground slab of the station building are to be used for the purpose of cooling the station building. - 7350 m² diaphragm wall equipped with piping - 3700 m² ground slab equipped with piping - Heating capacity: 154 kW - Cooling capacity: 92 kW Benefits of geothermal energy for underground railways: The station buildings, station and line tunnels which are to be constructed as part of the "U2 extension" project provide favourable conditions for extracting energy from the ground. Heat can be absorbed from or returned to the ground and to the groundwater by means of absorber units to cover the heating and cooling requirements of the stations. The possibilities for using this energy are as follows: - Heating and cooling of station buildings - Heating and cooling of shops in the area of the station - Surface and stair heating to keep these areas free of ice - Supplies to third party users 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 here free of charge.