Please use this identifier to cite or link to this item: https://ktisis.cut.ac.cy/handle/10488/13598
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dc.contributor.authorIosif-Stylianou, Iosifina-
dc.contributor.authorTassou, Savvas A.-
dc.contributor.authorChristodoulides, Paul-
dc.contributor.authorAresti, Lazaros-
dc.contributor.authorFlorides, Georgios A.-
dc.date.accessioned2019-05-06T17:02:32Z-
dc.date.available2019-05-06T17:02:32Z-
dc.date.issued2019-06-01-
dc.identifier.citationEnergy and Buildings, 2019, Volume 192, Pages 15-30en_US
dc.identifier.issn0378-7788-
dc.identifier.urihttp://ktisis.cut.ac.cy/handle/10488/13598-
dc.description.abstractThe paper focuses on the methodology for modeling the thermal response of vertical Ground Heat Exchangers (GHEs), when imposing underground water flow and a temperature gradient on the numerical model to represent the temperature of the depth profile. Four underground layers with different properties were studied, in order to identify their contribution in the total response of the GHE. In more detail, vertical GHEs in water saturated and dry soils, with or without water flow, are modeled with the equations that govern the heat transfer being presented. The numerical solution of the equations is based on the Finite Element Method (FEM) with boundary values. The model is validated with actual data of a Thermal Response Test (TRT) carried out in Lakatameia, Cyprus. Using the validated model, the heat injection rate of a GHE is investigated by determining the effect of the (a) summer and winter mode of operation, (b) underground temperature variation in depths smaller than 7 m due to daily and seasonal changes, (c) borehole radius, (d) borehole grout properties, (e) U-tube diameter, (f) U-tube leg and borehole centers distance, and (g) groundwater flow velocity.en_US
dc.formatpdfen_US
dc.language.isoenen_US
dc.publisherElsevier Ltd.en_US
dc.relation.ispartofEnergy and Buildingsen_US
dc.rights© 2019en_US
dc.subjectComputational modelingen_US
dc.subjectGeothermal energyen_US
dc.subjectGround heat exchangersen_US
dc.subjectGroundwater flowen_US
dc.titleModeling of vertical ground heat exchangers in the presence of groundwater flow and underground temperature gradienten_US
dc.typeArticleen_US
dc.collaborationBrunel University Londonen_US
dc.collaborationCyprus University of Technologyen_US
dc.subject.categoryEnvironmental Engineeringen_US
dc.journalsSubscription Journalen_US
dc.countryUKen_US
dc.countryCyprusen_US
dc.subject.fieldEngineering and Technologyen_US
dc.publicationPeer Revieweden_US
dc.identifier.doi10.1016/j.enbuild.2019.03.020en_US
cut.common.academicyear2018-2019en_US
item.grantfulltextnone-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.openairetypearticle-
item.fulltextNo Fulltext-
item.languageiso639-1en-
item.cerifentitytypePublications-
crisitem.author.deptDepartment of Electrical Engineering, Computer Engineering and Informatics-
crisitem.author.deptDepartment of Mechanical Engineering and Materials Science and Engineering-
crisitem.author.facultyFaculty of Engineering and Technology-
crisitem.author.facultyFaculty of Engineering and Technology-
crisitem.author.orcid0000-0002-2229-8798-
crisitem.author.orcid0000-0001-9079-1907-
crisitem.author.parentorgFaculty of Engineering and Technology-
crisitem.author.parentorgFaculty of Engineering and Technology-
crisitem.journal.journalissn0378-7788-
crisitem.journal.publisherElsevier-
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