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dc.contributor.authorShafagh, Ida
dc.contributor.authorRees, Simon
dc.contributor.authorUrra Mardaras, Iñigo
dc.contributor.authorCurto Janó, Marina
dc.contributor.authorPolo Carbayo, Merche
dc.date.accessioned2020-01-29T15:07:11Z
dc.date.available2020-01-29T15:07:11Z
dc.date.issued2020
dc.identifier.citationShafagh, Ida, Simon Rees, Iñigo Urra Mardaras, Marina Curto Janó, and Merche Polo Carbayo. “A Model of a Diaphragm Wall Ground Heat Exchanger.” Energies 13, no. 2 (January 7, 2020): 300. doi:10.3390/en13020300.en
dc.identifier.issn1996-1073en
dc.identifier.urihttp://hdl.handle.net/11556/864
dc.description.abstractGround thermal energy is a sustainable source that can substantially reduce our dependency on conventional fuels for heating and cooling of buildings. To exploit this source, foundation sub-structures with embedded heat exchanger pipes are employed. Diaphragm wall heat exchangers are one such form of ground heat exchangers, where part of the wall is exposed to the basement area of the building on one side, while the other side and the further depth of the wall face the surrounding ground. To assess the thermal performance of diaphragm wall heat exchangers, a model that takes the wall geometry and boundary conditions at the pipe, basement, and ground surfaces into account is required. This paper describes the development of such a model using a weighting factor approach, known as Dynamic Thermal Networks (DTN), that allows representation of the three-dimensional geometry, required boundary conditions, and heterogeneous material properties. The model is validated using data from an extended series of thermal response test measurements at two full-scale diaphragm wall heat exchanger installations in Barcelona, Spain. Validation studies are presented in terms of comparisons between the predicted and measured fluid temperatures and heat transfer rates. The model was found to predict the dynamics of thermal response over a range of operating conditions with good accuracy and using very modest computational resources.en
dc.description.sponsorshipThis work was possible thanks to the research project Geothermal Technology for Economic Cooling and Heating, GEOTeCH (http://www.geotech-project.eu). GEOTeCH is co-funded by the European Community Horizon 2020 Program for European Research and Technological Development (2014–2020) and has received research funding from the European Union under grant agreement No. 656889.en
dc.language.isoengen
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)en
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titleA Model of a Diaphragm Wall Ground Heat Exchangeren
dc.typearticleen
dc.identifier.doi10.3390/en13020300en
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/H2020/656889/EU/Geothermal Technology for €conomic Cooling and Heating/GEOTeCHen
dc.rights.accessRightsopenAccessen
dc.subject.keywordsGeothermalen
dc.subject.keywordsGround heat exchangeren
dc.subject.keywordsDiaphragm wallen
dc.subject.keywordsScreen wallen
dc.subject.keywordsModel validationen
dc.issue.number2en
dc.journal.titleEnergiesen
dc.page.initial300en
dc.volume.number13en


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    Attribution 4.0 InternationalExcept where otherwise noted, this item's license is described as Attribution 4.0 International