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\n\n \n \n \n \n \n Investigating the Effectiveness of Energy Tunnels in Cooling Underground Substations.\n \n \n \n\n\n \n Bidarmaghz, A.; Makasis, N.; Fei, W.; and Narsilio, G., A.\n\n\n \n\n\n\n In Barla, M.; Di Donna, A.; and Insana, A., editor(s),
International Conference of the International Association for Computer Methods and Advances in Geomechanics, pages 593-600, 2023. Springer\n
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@inproceedings{\n title = {Investigating the Effectiveness of Energy Tunnels in Cooling Underground Substations},\n type = {inproceedings},\n year = {2023},\n pages = {593-600},\n publisher = {Springer},\n city = {Turin},\n id = {c343b35a-92ea-3409-a77e-d73cb5871bbf},\n created = {2022-11-01T18:35:07.973Z},\n file_attached = {false},\n profile_id = {b56898ae-be91-3709-b6b9-d4db3e000556},\n last_modified = {2023-10-15T12:12:22.308Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n citation_key = {Bidarmaghz2023},\n private_publication = {false},\n bibtype = {inproceedings},\n author = {Bidarmaghz, Asal and Makasis, Nikolas and Fei, Wenbin and Narsilio, Guillermo A.},\n editor = {Barla, Marco and Di Donna, Alice and Insana, Alessandra},\n booktitle = {International Conference of the International Association for Computer Methods and Advances in Geomechanics}\n}
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\n\n \n \n \n \n \n Bayesian parameter inference for shallow subsurface modelling using field data and impacts on geothermal planning.\n \n \n \n\n\n \n Kreitmair, M., J.; Makasis, N.; Menberg, K.; Bidarmaghz, A.; Farr, G., J.; Boon, D.; and Choudhary, R.\n\n\n \n\n\n\n
Data-Centric Engineering, 3(November): e32. 2023.\n
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@article{\n title = {Bayesian parameter inference for shallow subsurface modelling using field data and impacts on geothermal planning},\n type = {article},\n year = {2023},\n keywords = {bayesian calibration,finite element methods,parameter inference,shallow geothermal energy,uncertainty},\n pages = {e32},\n volume = {3},\n id = {0781d987-283a-3b09-a3bb-a4221060544e},\n created = {2022-11-02T13:29:24.615Z},\n file_attached = {false},\n profile_id = {b56898ae-be91-3709-b6b9-d4db3e000556},\n last_modified = {2023-10-15T12:11:38.945Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n citation_key = {Kreitmair2023d},\n private_publication = {false},\n bibtype = {article},\n author = {Kreitmair, M. J. and Makasis, N. and Menberg, K. and Bidarmaghz, A. and Farr, G. J. and Boon, D. and Choudhary, R.},\n doi = {10.1017/dce.2022.32},\n journal = {Data-Centric Engineering},\n number = {November}\n}
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\n\n \n \n \n \n \n \n Thermo-hydraulic analysis in geothermal energy walls.\n \n \n \n \n\n\n \n Zhong, Y.; Bidarmaghz, A.; Narsilio, G., A.; and Makasis, N.\n\n\n \n\n\n\n
Tunnelling and Underground Space Technology incorporating Trenchless Technology Research, 132(July 2022): 104862. 2023.\n
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@article{\n title = {Thermo-hydraulic analysis in geothermal energy walls},\n type = {article},\n year = {2023},\n pages = {104862},\n volume = {132},\n websites = {https://doi.org/10.1016/j.tust.2022.104862},\n publisher = {Elsevier Ltd},\n id = {e3af3f64-8973-3750-8cd9-e75136a97c4d},\n created = {2022-12-02T16:45:05.411Z},\n file_attached = {false},\n profile_id = {b56898ae-be91-3709-b6b9-d4db3e000556},\n last_modified = {2023-10-15T12:11:44.989Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n citation_key = {Zhong2023},\n private_publication = {false},\n bibtype = {article},\n author = {Zhong, Yu and Bidarmaghz, Asal and Narsilio, Guillermo A and Makasis, Nikolas},\n doi = {10.1016/j.tust.2022.104862},\n journal = {Tunnelling and Underground Space Technology incorporating Trenchless Technology Research},\n number = {July 2022}\n}
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\n\n \n \n \n \n \n \n Analytical interpretation and numerical analysis of multiple energy pile thermal response tests.\n \n \n \n \n\n\n \n Bandeira, L., A.; Narsilio, G., A.; and Makasis, N.\n\n\n \n\n\n\n
Computers and Geotechnics, 157(February): 105314. 2023.\n
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@article{\n title = {Analytical interpretation and numerical analysis of multiple energy pile thermal response tests},\n type = {article},\n year = {2023},\n pages = {105314},\n volume = {157},\n websites = {https://doi.org/10.1016/j.compgeo.2023.105314},\n publisher = {Elsevier Ltd},\n id = {c89f1b51-0b29-3e98-a0d5-b105a106c25d},\n created = {2023-02-28T13:09:08.625Z},\n file_attached = {false},\n profile_id = {b56898ae-be91-3709-b6b9-d4db3e000556},\n last_modified = {2023-10-16T10:17:54.177Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n citation_key = {Bandeira2023},\n private_publication = {false},\n bibtype = {article},\n author = {Bandeira, Luis A and Narsilio, Guillermo A and Makasis, Nikolas},\n doi = {10.1016/j.compgeo.2023.105314},\n journal = {Computers and Geotechnics},\n number = {February}\n}
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\n\n \n \n \n \n \n Finding common ground: a methodology for city-scale subsurface thermal modelling.\n \n \n \n\n\n \n Kreitmair, M.; Makasis, N.; Bidarmaghz, A.; Menberg, K.; Choudhary, R.; and Soga, K.\n\n\n \n\n\n\n
Urban Climate,Conditionally Accepted. 2023.\n
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@article{\n title = {Finding common ground: a methodology for city-scale subsurface thermal modelling},\n type = {article},\n year = {2023},\n pages = {Conditionally Accepted},\n id = {ddcb3d40-4b0e-34fa-bcdf-2a18bad96def},\n created = {2023-04-17T09:27:39.918Z},\n file_attached = {false},\n profile_id = {b56898ae-be91-3709-b6b9-d4db3e000556},\n last_modified = {2023-10-15T12:11:51.931Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n citation_key = {Kreitmair2023a},\n private_publication = {false},\n bibtype = {article},\n author = {Kreitmair, M.J. and Makasis, N. and Bidarmaghz, A. and Menberg, K. and Choudhary, R. and Soga, K.},\n journal = {Urban Climate}\n}
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\n\n \n \n \n \n \n \n Analytical interpretation and numerical analysis of multiple energy pile thermal response tests.\n \n \n \n \n\n\n \n Bandeira, L., A.; Narsilio, G., A.; and Makasis, N.\n\n\n \n\n\n\n
Computers and Geotechnics, 157(February): 105314. 2023.\n
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\n\n \n \n Website\n \n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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@article{\n title = {Analytical interpretation and numerical analysis of multiple energy pile thermal response tests},\n type = {article},\n year = {2023},\n pages = {105314},\n volume = {157},\n websites = {https://doi.org/10.1016/j.compgeo.2023.105314},\n publisher = {Elsevier Ltd},\n id = {8e0e63bc-4262-3da0-8730-fb8e0d9e5c48},\n created = {2023-10-15T12:26:31.461Z},\n file_attached = {false},\n profile_id = {b56898ae-be91-3709-b6b9-d4db3e000556},\n last_modified = {2023-10-15T12:26:31.461Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n citation_key = {Bandeira2023},\n private_publication = {false},\n bibtype = {article},\n author = {Bandeira, Luis A and Narsilio, Guillermo A and Makasis, Nikolas},\n doi = {10.1016/j.compgeo.2023.105314},\n journal = {Computers and Geotechnics},\n number = {February}\n}
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\n\n \n \n \n \n \n Finding common ground: a methodology for city-scale subsurface thermal modelling.\n \n \n \n\n\n \n Kreitmair, M.; Makasis, N.; Bidarmaghz, A.; Menberg, K.; Choudhary, R.; and Soga, K.\n\n\n \n\n\n\n
Urban Climate,Conditionally Accepted. 2023.\n
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\n\n \n\n \n\n \n link\n \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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@article{\n title = {Finding common ground: a methodology for city-scale subsurface thermal modelling},\n type = {article},\n year = {2023},\n pages = {Conditionally Accepted},\n id = {8b034e4c-fec6-3dc4-8645-1d677e0fdb33},\n created = {2023-10-15T12:26:31.463Z},\n file_attached = {false},\n profile_id = {b56898ae-be91-3709-b6b9-d4db3e000556},\n last_modified = {2023-10-15T12:26:31.463Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n private_publication = {false},\n bibtype = {article},\n author = {Kreitmair, M.J. and Makasis, N. and Bidarmaghz, A. and Menberg, K. and Choudhary, R. and Soga, K.},\n journal = {Urban Climate}\n}
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\n\n \n \n \n \n \n Thermal Response of Energy Screw Piles Connected in Series.\n \n \n \n\n\n \n Bandeira Neto, L., A.; Narsilio, G., A.; Makasis, N.; Choudhary, R.; and Carden, Y.\n\n\n \n\n\n\n
Journal of Geotechnical and Geoenvironmental Engineering, 149(7): 1-17. 2023.\n
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\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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@article{\n title = {Thermal Response of Energy Screw Piles Connected in Series},\n type = {article},\n year = {2023},\n pages = {1-17},\n volume = {149},\n id = {f99ddd08-e8d2-3164-bd05-ce35a3e78bf4},\n created = {2023-10-15T12:26:31.587Z},\n file_attached = {false},\n profile_id = {b56898ae-be91-3709-b6b9-d4db3e000556},\n last_modified = {2023-10-15T12:26:31.587Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n private_publication = {false},\n abstract = {AbstractEnergy piles are a consolidated underground heat exchanger alternative to traditional boreholes in ground source heat pump (GSHP) systems. Previous works focused on assessing the difference...},\n bibtype = {article},\n author = {Bandeira Neto, Luis A. and Narsilio, Guillermo A. and Makasis, Nikolas and Choudhary, Ruchi and Carden, Yale},\n doi = {10.1061/jggefk.gteng-11082},\n journal = {Journal of Geotechnical and Geoenvironmental Engineering},\n number = {7}\n}
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\n AbstractEnergy piles are a consolidated underground heat exchanger alternative to traditional boreholes in ground source heat pump (GSHP) systems. Previous works focused on assessing the difference...\n
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\n\n \n \n \n \n \n \n Geothermal pavements: A city-scale investigation on providing sustainable heating for the city of Cardiff, UK.\n \n \n \n \n\n\n \n Makasis, N.; Gu, X.; Kreitmair, M., J.; Narsilio, G., A.; and Choudhary, R.\n\n\n \n\n\n\n
Renewable Energy, 218(September): 119248. 2023.\n
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@article{\n title = {Geothermal pavements: A city-scale investigation on providing sustainable heating for the city of Cardiff, UK},\n type = {article},\n year = {2023},\n keywords = {City-scale modelling,Geothermal pavements,Heating and cooling city planning,Numerical modelling,Shallow geothermal energy,geothermal pavements,shallow geothermal energy},\n pages = {119248},\n volume = {218},\n websites = {https://doi.org/10.1016/j.renene.2023.119248},\n publisher = {Elsevier Ltd},\n id = {f05c7a2c-33ff-3a0c-9c59-eb4eb7792908},\n created = {2023-10-15T12:26:31.599Z},\n file_attached = {false},\n profile_id = {b56898ae-be91-3709-b6b9-d4db3e000556},\n last_modified = {2023-10-15T12:26:31.599Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n private_publication = {false},\n abstract = {Geothermal pavements can be used with ground-source heat pump systems to sustainably provide energy for heating and cooling by incorporating ground heat exchanger elements underneath pavement surfaces. This work investigates the suitability of geothermal pavements at scale, adopting the city of Cardiff, UK, as a case-study. A two-scale modelling framework, combining detailed small-scale with holistic large-scale approaches, is presented, incorporating the accuracy of the former with the continuity of the latter. The results show that between 184 kWh and 345 kWh of thermal energy per metre length of pavement can be supplied annually, depending on soil profile. Moreover, geothermal operation can reduce anthropogenic heat flux into the ground from heated basements, and its associated negative impacts, by about 390 MWh/year. A city-scale analysis using population-consistent geographic areas called LSOAs, estimates that geothermal pavements can supply about 23% of the entire city residential heat demand, or up to 75% with heat sharing between LSOAs. The suitability of geothermal pavements for larger LSOAs is highlighted, supplying up to 100% of the annual domestic heat demand. Investigating the carbon emissions of heating and cooling technologies shows potential reductions of up to 75% when replacing gas boilers and resistance heating with geothermal pavement systems.},\n bibtype = {article},\n author = {Makasis, Nikolas and Gu, Xiaoying and Kreitmair, Monika J. and Narsilio, Guillermo A. and Choudhary, Ruchi},\n doi = {10.1016/j.renene.2023.119248},\n journal = {Renewable Energy},\n number = {September}\n}
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\n Geothermal pavements can be used with ground-source heat pump systems to sustainably provide energy for heating and cooling by incorporating ground heat exchanger elements underneath pavement surfaces. This work investigates the suitability of geothermal pavements at scale, adopting the city of Cardiff, UK, as a case-study. A two-scale modelling framework, combining detailed small-scale with holistic large-scale approaches, is presented, incorporating the accuracy of the former with the continuity of the latter. The results show that between 184 kWh and 345 kWh of thermal energy per metre length of pavement can be supplied annually, depending on soil profile. Moreover, geothermal operation can reduce anthropogenic heat flux into the ground from heated basements, and its associated negative impacts, by about 390 MWh/year. A city-scale analysis using population-consistent geographic areas called LSOAs, estimates that geothermal pavements can supply about 23% of the entire city residential heat demand, or up to 75% with heat sharing between LSOAs. The suitability of geothermal pavements for larger LSOAs is highlighted, supplying up to 100% of the annual domestic heat demand. Investigating the carbon emissions of heating and cooling technologies shows potential reductions of up to 75% when replacing gas boilers and resistance heating with geothermal pavement systems.\n
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\n\n \n \n \n \n \n Field investigation on a pilot energy piled retaining wall.\n \n \n \n\n\n \n Zhong, Y.; Narsilio, G.; Makasis, N.; and Villegas, L.\n\n\n \n\n\n\n
Canadian Geotechnical Journal, 61(3): 1-45. 2023.\n
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@article{\n title = {Field investigation on a pilot energy piled retaining wall},\n type = {article},\n year = {2023},\n pages = {1-45},\n volume = {61},\n id = {51cde93b-66dd-37ed-83b2-92064ba34159},\n created = {2023-10-15T12:26:32.021Z},\n file_attached = {false},\n profile_id = {b56898ae-be91-3709-b6b9-d4db3e000556},\n last_modified = {2023-10-15T12:26:32.021Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n private_publication = {false},\n abstract = {This article presents the thermal and thermo-mechanical responses of a pilot energy wall located in Melbourne, Australia, believed to be one of the first instrumented energy soldier piled walls in the world. The full-scale field thermal and thermo-mechanical conditions of the wall have been monitored during the period of a full-cycle thermal response test (TRT) conducted on a single soldier pile over two months. The monitored pile and ground temperature responses reveal the significance of the thermal condition in the excavated space on the thermal performance of such energy geostructures, which increases complexities in design and analysis. Furthermore, this study reports the profiles of axial strains and induced thermal stresses in the tested soldier pile, demonstrating how the applied thermal load from the TRT influenced the mechanical performance of the pile and wall and how the restrictive action of the support elements controlled the induced conditions. Here we show that soldier pile responds differently from energy piles or borehole heat exchangers, however residual axial strains were minimal and similar to those reported in energy piles foundations due to a thermo-elastic response to the imposed thermal loads and wall rigidity. Finally, the unique experimental dataset is made available for further studies.},\n bibtype = {article},\n author = {Zhong, Yu and Narsilio, Guillermo and Makasis, Nikolas and Villegas, Luis},\n doi = {10.1139/cgj-2023-0054},\n journal = {Canadian Geotechnical Journal},\n number = {3}\n}
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\n This article presents the thermal and thermo-mechanical responses of a pilot energy wall located in Melbourne, Australia, believed to be one of the first instrumented energy soldier piled walls in the world. The full-scale field thermal and thermo-mechanical conditions of the wall have been monitored during the period of a full-cycle thermal response test (TRT) conducted on a single soldier pile over two months. The monitored pile and ground temperature responses reveal the significance of the thermal condition in the excavated space on the thermal performance of such energy geostructures, which increases complexities in design and analysis. Furthermore, this study reports the profiles of axial strains and induced thermal stresses in the tested soldier pile, demonstrating how the applied thermal load from the TRT influenced the mechanical performance of the pile and wall and how the restrictive action of the support elements controlled the induced conditions. Here we show that soldier pile responds differently from energy piles or borehole heat exchangers, however residual axial strains were minimal and similar to those reported in energy piles foundations due to a thermo-elastic response to the imposed thermal loads and wall rigidity. Finally, the unique experimental dataset is made available for further studies.\n
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\n\n \n \n \n \n \n \n Field investigation on geothermal pavements.\n \n \n \n \n\n\n \n Motamedi, Y.; Makasis, N.; Düber, S.; Narsilio, G., A.; Arulrajah, A.; and Horpibulsuk, S.\n\n\n \n\n\n\n
Geomechanics for Energy and the Environment, 35: 100475. 2023.\n
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\n\n \n \n Website\n \n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\n\n
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@article{\n title = {Field investigation on geothermal pavements},\n type = {article},\n year = {2023},\n keywords = {Energy geotechnics,Field testing and monitoring,Full-scale experimental data,Geothermal pavements,Pavement geotechnics,Thermal response test},\n pages = {100475},\n volume = {35},\n websites = {https://doi.org/10.1016/j.gete.2023.100475},\n publisher = {Elsevier Ltd},\n id = {36ec9275-547a-3ee9-8b26-b6e664b322b3},\n created = {2023-10-15T12:26:32.056Z},\n file_attached = {false},\n profile_id = {b56898ae-be91-3709-b6b9-d4db3e000556},\n last_modified = {2023-10-15T12:26:32.056Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n private_publication = {false},\n abstract = {This article investigates the thermal response of a geothermal pavements located in Adelaide, South Australia. This geothermal pavement field trial is believed to be the first full-scale instrumented system of its kind in the country, and one of the handful around the world to date providing a rare set of experimental data. The ground temperature and weather parameters were monitored for over two years, including during two thermal response tests (TRTs) undertaken under different weather conditions. The annual ground temperature profile under the pavement provides helpful information for geothermal pavements design and model validation. Results revealed the significant impact of weather conditions on the TRTs due to the shallow burial depth of the pipe heat exchanger. To minimise these effects, it is then recommended to perform TRT or thermal performance testing during mid-season. Comparison of test results showed that the effect of ambient temperature was more intensive in summer due to the presence of heat-absorbing asphalt at the surface. In addition, the high amount of absorbed heat at the surface reduced the pavement depth-temperature fluctuations in winter as well as the temperature difference between days and nights, leading to a better performance.},\n bibtype = {article},\n author = {Motamedi, Yaser and Makasis, Nikolas and Düber, Stephan and Narsilio, Guillermo A. and Arulrajah, Arul and Horpibulsuk, Suksun},\n doi = {10.1016/j.gete.2023.100475},\n journal = {Geomechanics for Energy and the Environment}\n}
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\n This article investigates the thermal response of a geothermal pavements located in Adelaide, South Australia. This geothermal pavement field trial is believed to be the first full-scale instrumented system of its kind in the country, and one of the handful around the world to date providing a rare set of experimental data. The ground temperature and weather parameters were monitored for over two years, including during two thermal response tests (TRTs) undertaken under different weather conditions. The annual ground temperature profile under the pavement provides helpful information for geothermal pavements design and model validation. Results revealed the significant impact of weather conditions on the TRTs due to the shallow burial depth of the pipe heat exchanger. To minimise these effects, it is then recommended to perform TRT or thermal performance testing during mid-season. Comparison of test results showed that the effect of ambient temperature was more intensive in summer due to the presence of heat-absorbing asphalt at the surface. In addition, the high amount of absorbed heat at the surface reduced the pavement depth-temperature fluctuations in winter as well as the temperature difference between days and nights, leading to a better performance.\n
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\n\n \n \n \n \n \n A case study on district-scale geothermal system potential for the city of Cambridge , UK.\n \n \n \n\n\n \n Kreitmair, M., J.; Makasis, N.; Ward, R.; and Choudhary, R.\n\n\n \n\n\n\n In
Proceedings of the ISSMGE TC215 9th International Congress on Environmental Geotechnics, pages 215-224, 2023. \n
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@inproceedings{\n title = {A case study on district-scale geothermal system potential for the city of Cambridge , UK},\n type = {inproceedings},\n year = {2023},\n keywords = {district-scale,ground-source heat pump systems,heating,shallow geothermal energy,subsurface modelling,underground climate},\n pages = {215-224},\n city = {Chania},\n id = {b0b7e8d6-d27c-36e5-88de-add0692567ef},\n created = {2023-10-16T10:17:45.657Z},\n file_attached = {false},\n profile_id = {b56898ae-be91-3709-b6b9-d4db3e000556},\n last_modified = {2023-10-16T10:17:45.657Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n bibtype = {inproceedings},\n author = {Kreitmair, M J and Makasis, N and Ward, R and Choudhary, R},\n booktitle = {Proceedings of the ISSMGE TC215 9th International Congress on Environmental Geotechnics}\n}
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\n\n \n \n \n \n \n A novel sensor for in-situ thermo-mechanical testing and application to MICP-treated soils.\n \n \n \n\n\n \n Gu, X.; Clarà Saracho, A.; Makasis, N.; Kreitmair, M., J.; Narsilio, G.; and Haigh, S., K.\n\n\n \n\n\n\n In
Proceedings of the ISSMGE TC215 9th International Congress on Environmental Geotechnics, volume 5, pages 87-96, 2023. \n
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@inproceedings{\n title = {A novel sensor for in-situ thermo-mechanical testing and application to MICP-treated soils},\n type = {inproceedings},\n year = {2023},\n keywords = {finite,ground improvement,micp,sands,thermal conductivity,transient thermal probes},\n pages = {87-96},\n volume = {5},\n city = {Chania},\n id = {5f26056f-1c8b-3599-82aa-877b6a2589a0},\n created = {2023-10-16T10:17:45.769Z},\n file_attached = {false},\n profile_id = {b56898ae-be91-3709-b6b9-d4db3e000556},\n last_modified = {2023-10-16T10:17:45.769Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n private_publication = {false},\n bibtype = {inproceedings},\n author = {Gu, Xiaoying and Clarà Saracho, Alexandra and Makasis, Nikolas and Kreitmair, Monika Johanna and Narsilio, Guillermo and Haigh, Stuart Kenneth},\n booktitle = {Proceedings of the ISSMGE TC215 9th International Congress on Environmental Geotechnics}\n}
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\n\n \n \n \n \n \n Cooling underground substations worldwide using heat pumps.\n \n \n \n\n\n \n Makasis, N.; Bidarmaghz, A.; Fei, W.; and Narsilio, G., A.\n\n\n \n\n\n\n In
Symposium of Energy Geotechnics, pages 5-6, 2023. \n
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@inproceedings{\n title = {Cooling underground substations worldwide using heat pumps},\n type = {inproceedings},\n year = {2023},\n pages = {5-6},\n issue = {October},\n city = {Delft},\n id = {72a055a4-049d-3734-9c76-aeed1cd43e37},\n created = {2023-10-16T10:17:45.860Z},\n file_attached = {false},\n profile_id = {b56898ae-be91-3709-b6b9-d4db3e000556},\n last_modified = {2023-10-16T10:17:45.860Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n bibtype = {inproceedings},\n author = {Makasis, Nikolas and Bidarmaghz, Asal and Fei, Wenbin and Narsilio, Guillermo Andres},\n booktitle = {Symposium of Energy Geotechnics}\n}
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\n\n \n \n \n \n \n Finding common ground : identifying shallow geothermal potential for the city of Cambridge , UK.\n \n \n \n\n\n \n Makasis, N.; Kreitmair, M., J.; Ward, R.; and Choudhary, R.\n\n\n \n\n\n\n In
Symposium on Energy Geotechnics, pages 5-7, 2023. \n
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@inproceedings{\n title = {Finding common ground : identifying shallow geothermal potential for the city of Cambridge , UK},\n type = {inproceedings},\n year = {2023},\n pages = {5-7},\n issue = {October},\n city = {Delft},\n id = {c3f73add-5495-3427-ad91-cc3dc8e79c6a},\n created = {2023-10-16T10:17:45.894Z},\n file_attached = {false},\n profile_id = {b56898ae-be91-3709-b6b9-d4db3e000556},\n last_modified = {2023-10-16T10:17:45.894Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n bibtype = {inproceedings},\n author = {Makasis, Nikolas and Kreitmair, Monika Johanna and Ward, Rebecca and Choudhary, Ruchi},\n booktitle = {Symposium on Energy Geotechnics}\n}
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\n\n \n \n \n \n \n Thermo-mechanical behaviour of microbially induced carbonate precipitation (MICP) sand for geothermal pavements.\n \n \n \n\n\n \n Gu, X.; Clarà Saracho, A.; Makasis, N.; Kreitmair, M., J.; Narsilio, G.; and Haigh, S.\n\n\n \n\n\n\n In
Symposium of Energy Geotechnics, pages 10-11, 2023. \n
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@inproceedings{\n title = {Thermo-mechanical behaviour of microbially induced carbonate precipitation (MICP) sand for geothermal pavements},\n type = {inproceedings},\n year = {2023},\n pages = {10-11},\n issue = {October},\n city = {Delft},\n id = {5ff42661-7b14-366a-ab1c-1f56de10913f},\n created = {2023-10-16T10:17:45.980Z},\n file_attached = {false},\n profile_id = {b56898ae-be91-3709-b6b9-d4db3e000556},\n last_modified = {2023-10-16T10:17:45.980Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n private_publication = {false},\n bibtype = {inproceedings},\n author = {Gu, Xiaoying and Clarà Saracho, Alexandra and Makasis, Nikolas and Kreitmair, Monika Johanna and Narsilio, Guillermo and Haigh, Stuart},\n booktitle = {Symposium of Energy Geotechnics}\n}
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\n\n \n \n \n \n \n \n Investigating the Effectiveness of Energy Tunnels in Cooling Underground Substations.\n \n \n \n \n\n\n \n Bidarmaghz, A.; Makasis, N.; Fei, W.; and Narsilio, G., A.\n\n\n \n\n\n\n Volume 288 LNCE Springer International Publishing, 2023.\n
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@book{\n title = {Investigating the Effectiveness of Energy Tunnels in Cooling Underground Substations},\n type = {book},\n year = {2023},\n source = {International Conference of the International Association for Computer Methods and Advances in Geomechanics},\n keywords = {Cooling tunnels,Heat exchangers,Numerical modelling,Rail/road tunnel,Underground substations},\n pages = {593-600},\n volume = {288 LNCE},\n websites = {http://dx.doi.org/10.1007/978-3-031-12851-6_70},\n publisher = {Springer International Publishing},\n id = {c1952bf7-79c9-3415-93d7-11c18cedbfaf},\n created = {2023-10-16T10:17:46.074Z},\n file_attached = {false},\n profile_id = {b56898ae-be91-3709-b6b9-d4db3e000556},\n last_modified = {2023-10-16T10:17:46.074Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n private_publication = {false},\n abstract = {Energy geo-structures have received rapid attention as part of the pursuit for renewable energy since they can exchange heat between the ground and under- or above-ground spaces, in addition to their primary structural functions. However, their efficiency in cooling-dominated conditions has not been adequately studied. This paper tackles a key challenge regarding transport tunnels: sustainable cooling of underground substations by introducing a cooling system that integrates heat exchangers into tunnel lining. This system takes advantage of the tunnel air and the ground potential as sustainable heat sinks to which the heat from the substations is rejected and evaluates the efficiency of the proposed cooling system for different configurations of heat exchangers. The efficiency is evaluated by numerically investigating temperature changes in the ground, tunnel air, tunnel structure and carrier fluid circulating within the heat exchangers. Moreover, the cost of the proposed systems is compared with those of the conventional direct expansion (DX) systems. Results show that the proposed cooling system can effectively improve the efficiency of cooling underground substations by yielding a higher Coefficient of Performance (COP) and lower Net Present Cost (NPC) than the conventional DX systems, without imposing unsustainable practices on the ground, tunnel structure or tunnel air.},\n bibtype = {book},\n author = {Bidarmaghz, Asal and Makasis, Nikolas and Fei, Wenbin and Narsilio, Guillermo A.},\n doi = {10.1007/978-3-031-12851-6_70}\n}
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\n Energy geo-structures have received rapid attention as part of the pursuit for renewable energy since they can exchange heat between the ground and under- or above-ground spaces, in addition to their primary structural functions. However, their efficiency in cooling-dominated conditions has not been adequately studied. This paper tackles a key challenge regarding transport tunnels: sustainable cooling of underground substations by introducing a cooling system that integrates heat exchangers into tunnel lining. This system takes advantage of the tunnel air and the ground potential as sustainable heat sinks to which the heat from the substations is rejected and evaluates the efficiency of the proposed cooling system for different configurations of heat exchangers. The efficiency is evaluated by numerically investigating temperature changes in the ground, tunnel air, tunnel structure and carrier fluid circulating within the heat exchangers. Moreover, the cost of the proposed systems is compared with those of the conventional direct expansion (DX) systems. Results show that the proposed cooling system can effectively improve the efficiency of cooling underground substations by yielding a higher Coefficient of Performance (COP) and lower Net Present Cost (NPC) than the conventional DX systems, without imposing unsustainable practices on the ground, tunnel structure or tunnel air.\n
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