Utilization of geothermal energy from railway tunnels

摘要

Energy piles, energy diaphragm walls or energy slabs for the extraction of geothermal energy and/or the transferring and/or storage of thermal energy in the ground have proved suitable for heating and/or cooling of buildings. The application of thisinnovative technology has now been extended to tunnels. Structural elements of tunnels, which axe situated deeply within rock and soil, can be ideally used as geothermal energy absorber elements. In this paper general considerations of a 12km long tunnelbelow the city of Vienna are presented, in the scope of this project the design of a geothermal energy facility is intended. Moreover, thermal simulations and case histories are discussed.