1. Characterisation of ground thermal and thermo-mechanical behaviour for shallow geothermal energy applications
- Author
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Ana Vieira, João Maranha, Paul Christodoulides, Maria Alberdi-Pagola, Fleur Loveridge, Frederic Nguyen, Georgios Florides, Georgia Radioti, Francesco Cecinato, Iulia Prodan, Elsa Ramalho, Aleksandar Georgiev, Sandrine Rosin-Paumier, Stanislav Lenart, Søren Erbs Poulsen, Rumen Popov, Saqib Javed, Gust Van Lysebetten, Diana Salciarini, National Laboratory for Civil Engineering [Lisboa] (LNEC), National Laboratory for Civil Engineering (LNEC), Faculty of Engineering and Technology [Cyprus University of Technology], Cyprus University of Technology, Aalborg University [Denmark] (AAU), School of Civil Engineering [Leeds], University of Leeds, Urban and Environmental Engineering [Liège], Université de Liège, Department of civil, environmental and mechanical engineering [Trento], University of Trento [Trento], Universitatea Tehnica din Cluj-Napoca (UTCN), Laboratório Nacional de Energia e Geologia (LNEG), Technical University of Sofia [Bulgaria] (TU-Sofia), Laboratoire Énergies et Mécanique Théorique et Appliquée (LEMTA ), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Slovenian National Building and Civil Engineering Institute, Centre of Applied Research and Development-Building, Energy and Environment [VIA University College], VIA University College, Plovdiv University 'Paisii Hilendarski', Building Services Engineering [Lund University], Lund University [Lund], Belgian Building Research Institute, and Università degli Studi di Perugia (UNIPG)
- Subjects
Control and Optimization ,Soil test ,020209 energy ,Energy Engineering and Power Technology ,02 engineering and technology ,Shallow geothermal systems ,lcsh:Technology ,Energy engineering ,In situ testing ,Laboratory testing ,Soil thermal behaviour ,Thermo-mechanical behaviour ,Renewable Energy, Sustainability and the Environment ,Thermal ,Heat exchanger ,0202 electrical engineering, electronic engineering, information engineering ,Renewable Energy ,Electrical and Electronic Engineering ,[SDU.STU.AG]Sciences of the Universe [physics]/Earth Sciences/Applied geology ,Engineering (miscellaneous) ,Sustainability and the Environment ,Petroleum engineering ,Thermal reservoir ,lcsh:T ,business.industry ,Geothermal energy ,[SPI.GCIV.GEOTECH]Engineering Sciences [physics]/Civil Engineering/Géotechnique ,Foundation (engineering) ,Building and Construction ,Thermal response test ,Environmental science ,business ,Energy (miscellaneous) - Abstract
International audience; Increasing use of the ground as a thermal reservoir is expected in the near future. Shallow geothermal energy (SGE) systems have proved to be sustainable alternative solutions for buildings and infrastructure conditioning in many areas across the globe in the past decades. Recently novel solutions, including energy geostructures, where SGE systems are coupled with foundation heat exchangers, have also been developed. The performance of these systems is dependent on a series of factors, among which the thermal properties of the soil play a major role. The purpose of this paper is to present, in an integrated manner, the main methods and procedures to assess ground thermal properties for SGE systems and to carry out a critical review of the methods. In particular, laboratory testing through either steady-state or transient methods are discussed and a new synthesis comparing results for different techniques is presented. In situ testing including all variations of the thermal response test is presented in detail, including a first comparison between new and traditional approaches. The issue of different scales between laboratory and in situ measurements is then analysed in detail. Finally, the thermo-hydro-mechanical behaviour of soil is introduced and discussed. These coupled processes are important for confirming the structural integrity of energy geostructures, but routine methods for parameter determination are still lacking.
- Published
- 2017