Adam, D. and Markiewicz, R. (2009). “Energy from earth-coupled structures, foundations, tunnels and sewers.” Geotechnique, Vol. 59, No. 3, pp. 229-236.10.1680/geot.2009.59.3.229Adam, D. and Markiewicz, R. (2009). “Energy from earth-coupled structures, foundations, tunnels and sewers.” Geotechnique, Vol. 59, No. 3, pp. 229-236.

Brandl, H. (2006). “Energy foundations and other thermo-active ground structures.” Geotechnique, Vol. 56, No. 2, pp. 81-122.10.1680/geot.2006.56.2.81Brandl, H. (2006). “Energy foundations and other thermo-active ground structures.” Geotechnique, Vol. 56, No. 2, pp. 81-122.

Baujard, C. and Kohl, T. (2010). “Evaluation of the potential use of geothermal heat exchangers in the CEVA tunneling project.” World Geothermal Congress 2010, 25-29 April, Bali, Indonesia.Baujard, C. and Kohl, T. (2010). “Evaluation of the potential use of geothermal heat exchangers in the CEVA tunneling project.” World Geothermal Congress 2010, 25-29 April, Bali, Indonesia.

Engineering Toolbox Website. Available at: http://engineeringtool- box.com.Engineering Toolbox Website. Available at: http://engineeringtool- box.com.

EPA (1993). Space conditioning: The Next Frontier, Office of Air and Radiation, 430-R-93-0044 (4/93), US Energy Protection Agency, Washington DC.EPA (1993). Space conditioning: The Next Frontier, Office of Air and Radiation, 430-R-93-0044 (4/93), US Energy Protection Agency, Washington DC.

Franzius, J. N. and Pralle, N. (2011). “Turing segmental tunnels into sources of renewable energy.” Proceedings of ICE Civil Engineering 2011, Paper No. 164, pp. 35-40.10.1680/cien.2011.164.1.35Franzius, J. N. and Pralle, N. (2011). “Turing segmental tunnels into sources of renewable energy.” Proceedings of ICE Civil Engineering 2011, Paper No. 164, pp. 35-40.

FLUENT (2010). ANSYS manual ver. 12.0, Fluent Inc.FLUENT (2010). ANSYS manual ver. 12.0, Fluent Inc.

Gao, J., Zhang, X., Liu, J., Li, K. and Yang, J. (2008). “Numerical and experimental assessment of thermal performance of vertical energy pile.” Applied Energy, An application, Vol. 85, pp. 901-910.10.1016/j.apenergy.2008.02.010Gao, J., Zhang, X., Liu, J., Li, K. and Yang, J. (2008). “Numerical and experimental assessment of thermal performance of vertical energy pile.” Applied Energy, An application, Vol. 85, pp. 901-910.

Gil, H., Lee, K., Lee, C. and Choi, H. (2009). “Numerical evaluation on thermal performance and sectional efficiency of closed-loop vertical ground heat exchanger.” Journal of Korean Geotechnical Society, Vol. 25, No. 3, pp. 57-64.Gil, H., Lee, K., Lee, C. and Choi, H. (2009). “Numerical evaluation on thermal performance and sectional efficiency of closed-loop vertical ground heat exchanger.” Journal of Korean Geotechnical Society, Vol. 25, No. 3, pp. 57-64.

Hahn, J., Hahn, G., Hahn, H. and Hahn, C. (2005). Geothermal Heat Pump System, Hanrimwon (in Korean).Hahn, J., Hahn, G., Hahn, H. and Hahn, C. (2005). Geothermal Heat Pump System, Hanrimwon (in Korean).

Johnston, I. W., Narsillio, G. A. and Colls, S. (2011). “Emerging geothermal energy technologies.” Journal of Civil Engineering, KSCE, Vol. 15, No. 4, pp. 643-653.10.1007/s12205-011-0005-7Johnston, I. W., Narsillio, G. A. and Colls, S. (2011). “Emerging geothermal energy technologies.” Journal of Civil Engineering, KSCE, Vol. 15, No. 4, pp. 643-653.

Jun, L., Zhang, X., Gao, J. and Yang, J. (2009). “Evaluation of heat exchange rate of GHW in geothermal heat pump system.” Renewable Energy, Vol. 34, pp. 2898-2904.10.1016/j.renene.2009.04.009Jun, L., Zhang, X., Gao, J. and Yang, J. (2009). “Evaluation of heat exchange rate of GHW in geothermal heat pump system.” Renewable Energy, Vol. 34, pp. 2898-2904.

Launder, B. E. and Spalding, D. B. (1972). Lectures in mathematical models of turbulence, Academic Press, London, England.Launder, B. E. and Spalding, D. B. (1972). Lectures in mathematical models of turbulence, Academic Press, London, England.

Laloui, L., Nuth, M. and Vulliet, L. (2006). “Experimental and numerical investigations of the behavior of a heat exchanger pile.” Int J Numer Anal Meth Geomech, Vol. 30, pp.763-781.10.1002/nag.499Laloui, L., Nuth, M. and Vulliet, L. (2006). “Experimental and numerical investigations of the behavior of a heat exchanger pile.” Int J Numer Anal Meth Geomech, Vol. 30, pp.763-781.

Lee, C., Park, M., Min, S., Kang, S. H., Sohn, B. and Choi, H. (2011). “Comparison of effective thermal conductivity in closed- loop vertical ground heat exchangers.” Applied Thermal Engineering, Vol. 31, pp. 3669-3676.10.1016/j.applthermaleng.2011.01.016Lee, C., Park, M., Min, S., Kang, S. H., Sohn, B. and Choi, H. (2011). “Comparison of effective thermal conductivity in closed- loop vertical ground heat exchangers.” Applied Thermal Engineering, Vol. 31, pp. 3669-3676.

Lee, C., Park, M., Jeoung, J., Shon, B. and Choi, H. (2012). “Evaluation of thermal performance of energy textile installed in tunnel.” Renewable Energy, Vol. 42, June 2012, pp. 11-22.10.1016/j.renene.2011.09.031Lee, C., Park, M., Jeoung, J., Shon, B. and Choi, H. (2012). “Evaluation of thermal performance of energy textile installed in tunnel.” Renewable Energy, Vol. 42, June 2012, pp. 11-22.

Markiewicz, R. (2004). Numerische und experimentelle Untersuchungen zur Nutzung von geothermischer Energie mittels erdberührter Bauteile und Neuentwicklungen für den Tunnelbau, Doctoral Thesis, Institute for Soil Mechanics and Geotechnical Eng., Technical Univ. of Vienna, Austria (in German).Markiewicz, R. (2004). Numerische und experimentelle Untersuchungen zur Nutzung von geothermischer Energie mittels erdberührter Bauteile und Neuentwicklungen für den Tunnelbau, Doctoral Thesis, Institute for Soil Mechanics and Geotechnical Eng., Technical Univ. of Vienna, Austria (in German).

Nam, Y., Ooka, R. and Hwang, S. (2008). “Development of a numerical model to predict heat exchange rate for a groune source heat pump system.” Energy and Building, Vol. 40, pp. 2113-2140.10.1016/j.enbuild.2008.06.004Nam, Y., Ooka, R. and Hwang, S. (2008). “Development of a numerical model to predict heat exchange rate for a groune source heat pump system.” Energy and Building, Vol. 40, pp. 2113-2140.

Nam, Y. and Ooka, R. (2011). “Development of potential map for ground and groundwater heat pump systems and application to Tokyo.” Energy and Building, Vol. 43, pp. 677-685.10.1016/j.enbuild.2010.11.011Nam, Y. and Ooka, R. (2011). “Development of potential map for ground and groundwater heat pump systems and application to Tokyo.” Energy and Building, Vol. 43, pp. 677-685.

Pahud, D. and Hubbuch, M. (2007). “Measured thermal performances of the energy pile system of the dock midfield at zürich airport.” Proceedings European Geothermal Congress 2007 Unterhaching, Germany, 30 May-1 June 2007.Pahud, D. and Hubbuch, M. (2007). “Measured thermal performances of the energy pile system of the dock midfield at zürich airport.” Proceedings European Geothermal Congress 2007 Unterhaching, Germany, 30 May-1 June 2007.

Rehau (2011). Geothermal tunnel lining, Available at: http://www.rehau.co.uk.Rehau (2011). Geothermal tunnel lining, Available at: http://www.rehau.co.uk.