Geothermal pavements: field observations, numerical modelling and long-term performance

Geothermal pavements: field observations, numerical modelling and long-term performance. Gu, X., Makasis, N., Motamedi, Y., Narsilio, G. A., Arulrajah, A., & Horpibulsuk, S. Géotechnique, 72(9):832–846, 2022.
doi abstract bibtex

Geothermal pavement systems are a novel type of energy geostructure. They use sub-surface structures to exchange heat with the ground and, thereby, provide thermal energy in addition to structural support. The thermo-activation of pavements has been largely overlooked in the literature. This research focuses on the development of a detailed three-dimensional (3D) finite-element (FE) model to explore the thermal performance of geothermal pavement systems. The 3D FE model developed was successfully validated with both data measured from a full-scale experiment undertaken in Adelaide, South Australia and other published data. The validated model is further employed to evaluate the long-term performance of a geothermal pavement system under both a traditional system configuration and a hybrid system. Furthermore, a life-cycle cost analysis is performed to explore the cost implication of such pavement systems. Results show that a geothermal pavement with total pipe length of 640 m, or a hybrid system (a geothermal pavement system with a pipe length of 320 m and an auxiliary system) can provide for sufficient space heating and cooling for a typical residential building in Australia. It is found that, compared with conventional heating and cooling systems, the geothermal pavement system is indeed a cost-effective solution. This research study indicates that this pavement technology can be successfully implemented in the field and accurately modelled using FE techniques.

@article{gu_geothermal_2022,
	title = {Geothermal pavements: field observations, numerical modelling and long-term performance},
	volume = {72},
	issn = {0016-8505 1751-7656},
	doi = {10.1680/jgeot.20.P.296},
	abstract = {Geothermal pavement systems are a novel type of energy geostructure. They use sub-surface structures to exchange heat with the ground and, thereby, provide thermal energy in addition to structural support. The thermo-activation of pavements has been largely overlooked in the literature. This research focuses on the development of a detailed three-dimensional (3D) finite-element (FE) model to explore the thermal performance of geothermal pavement systems. The 3D FE model developed was successfully validated with both data measured from a full-scale experiment undertaken in Adelaide, South Australia and other published data. The validated model is further employed to evaluate the long-term performance of a geothermal pavement system under both a traditional system configuration and a hybrid system. Furthermore, a life-cycle cost analysis is performed to explore the cost implication of such pavement systems. Results show that a geothermal pavement with total pipe length of 640 m, or a hybrid system (a geothermal pavement system with a pipe length of 320 m and an auxiliary system) can provide for sufficient space heating and cooling for a typical residential building in Australia. It is found that, compared with conventional heating and cooling systems, the geothermal pavement system is indeed a cost-effective solution. This research study indicates that this pavement technology can be successfully implemented in the field and accurately modelled using FE techniques.},
	number = {9},
	journal = {Géotechnique},
	author = {Gu, Xiaoying and Makasis, Nikolas and Motamedi, Yaser and Narsilio, Guillermo A. and Arulrajah, Arul and Horpibulsuk, Suksun},
	year = {2022},
	pages = {832--846},
}

Downloads: 0

{"_id":"cco28AHjp9n5Q2HPi","bibbaseid":"gu-makasis-motamedi-narsilio-arulrajah-horpibulsuk-geothermalpavementsfieldobservationsnumericalmodellingandlongtermperformance-2022","author_short":["Gu, X.","Makasis, N.","Motamedi, Y.","Narsilio, G. A.","Arulrajah, A.","Horpibulsuk, S."],"bibdata":{"bibtype":"article","type":"article","title":"Geothermal pavements: field observations, numerical modelling and long-term performance","volume":"72","issn":"0016-8505 1751-7656","doi":"10.1680/jgeot.20.P.296","abstract":"Geothermal pavement systems are a novel type of energy geostructure. They use sub-surface structures to exchange heat with the ground and, thereby, provide thermal energy in addition to structural support. The thermo-activation of pavements has been largely overlooked in the literature. This research focuses on the development of a detailed three-dimensional (3D) finite-element (FE) model to explore the thermal performance of geothermal pavement systems. The 3D FE model developed was successfully validated with both data measured from a full-scale experiment undertaken in Adelaide, South Australia and other published data. The validated model is further employed to evaluate the long-term performance of a geothermal pavement system under both a traditional system configuration and a hybrid system. Furthermore, a life-cycle cost analysis is performed to explore the cost implication of such pavement systems. Results show that a geothermal pavement with total pipe length of 640 m, or a hybrid system (a geothermal pavement system with a pipe length of 320 m and an auxiliary system) can provide for sufficient space heating and cooling for a typical residential building in Australia. It is found that, compared with conventional heating and cooling systems, the geothermal pavement system is indeed a cost-effective solution. This research study indicates that this pavement technology can be successfully implemented in the field and accurately modelled using FE techniques.","number":"9","journal":"Géotechnique","author":[{"propositions":[],"lastnames":["Gu"],"firstnames":["Xiaoying"],"suffixes":[]},{"propositions":[],"lastnames":["Makasis"],"firstnames":["Nikolas"],"suffixes":[]},{"propositions":[],"lastnames":["Motamedi"],"firstnames":["Yaser"],"suffixes":[]},{"propositions":[],"lastnames":["Narsilio"],"firstnames":["Guillermo","A."],"suffixes":[]},{"propositions":[],"lastnames":["Arulrajah"],"firstnames":["Arul"],"suffixes":[]},{"propositions":[],"lastnames":["Horpibulsuk"],"firstnames":["Suksun"],"suffixes":[]}],"year":"2022","pages":"832–846","bibtex":"@article{gu_geothermal_2022,\n\ttitle = {Geothermal pavements: field observations, numerical modelling and long-term performance},\n\tvolume = {72},\n\tissn = {0016-8505 1751-7656},\n\tdoi = {10.1680/jgeot.20.P.296},\n\tabstract = {Geothermal pavement systems are a novel type of energy geostructure. They use sub-surface structures to exchange heat with the ground and, thereby, provide thermal energy in addition to structural support. The thermo-activation of pavements has been largely overlooked in the literature. This research focuses on the development of a detailed three-dimensional (3D) finite-element (FE) model to explore the thermal performance of geothermal pavement systems. The 3D FE model developed was successfully validated with both data measured from a full-scale experiment undertaken in Adelaide, South Australia and other published data. The validated model is further employed to evaluate the long-term performance of a geothermal pavement system under both a traditional system configuration and a hybrid system. Furthermore, a life-cycle cost analysis is performed to explore the cost implication of such pavement systems. Results show that a geothermal pavement with total pipe length of 640 m, or a hybrid system (a geothermal pavement system with a pipe length of 320 m and an auxiliary system) can provide for sufficient space heating and cooling for a typical residential building in Australia. It is found that, compared with conventional heating and cooling systems, the geothermal pavement system is indeed a cost-effective solution. This research study indicates that this pavement technology can be successfully implemented in the field and accurately modelled using FE techniques.},\n\tnumber = {9},\n\tjournal = {Géotechnique},\n\tauthor = {Gu, Xiaoying and Makasis, Nikolas and Motamedi, Yaser and Narsilio, Guillermo A. and Arulrajah, Arul and Horpibulsuk, Suksun},\n\tyear = {2022},\n\tpages = {832--846},\n}\n\n\n\n","author_short":["Gu, X.","Makasis, N.","Motamedi, Y.","Narsilio, G. A.","Arulrajah, A.","Horpibulsuk, S."],"key":"gu_geothermal_2022","id":"gu_geothermal_2022","bibbaseid":"gu-makasis-motamedi-narsilio-arulrajah-horpibulsuk-geothermalpavementsfieldobservationsnumericalmodellingandlongtermperformance-2022","role":"author","urls":{},"metadata":{"authorlinks":{}},"downloads":0,"html":""},"bibtype":"article","biburl":"https://bibbase.org/zotero/mcarcamomedel","dataSources":["5jbSqsLwny8LiLiuX"],"keywords":[],"search_terms":["geothermal","pavements","field","observations","numerical","modelling","long","term","performance","gu","makasis","motamedi","narsilio","arulrajah","horpibulsuk"],"title":"Geothermal pavements: field observations, numerical modelling and long-term performance","year":2022}