Assessment of thermal behaviour of thermo-active diaphragm walls based on monitoring data

Thermo-active diaphragm walls have proved their effectiveness in the thermal conditioning of buildings and infrastructures. However, some aspects still need to be investigated in order to tailor methods and tools for an accurate prediction of their energy and structural performance. In this perspect...

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Main Authors: Donatella Sterpi, Adriana Angelotti, Omid Habibzadeh-Bigdarvish, Daniel Jalili
Format: Article
Language:English
Published: Elsevier 2018-12-01
Series:Journal of Rock Mechanics and Geotechnical Engineering
Online Access:http://www.sciencedirect.com/science/article/pii/S1674775518301276
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spelling doaj-39434d1ae4b44981ac4470e62027e1ea2020-11-24T20:57:55ZengElsevierJournal of Rock Mechanics and Geotechnical Engineering1674-77552018-12-0110611451153Assessment of thermal behaviour of thermo-active diaphragm walls based on monitoring dataDonatella Sterpi0Adriana Angelotti1Omid Habibzadeh-Bigdarvish2Daniel Jalili3Department of Civil and Environmental Engineering, Politecnico di Milano, Milano, Italy; Corresponding author.Energy Department, Politecnico di Milano, Milano, ItalyDepartment of Civil and Environmental Engineering, Politecnico di Milano, Milano, ItalyDepartment of Civil and Environmental Engineering, Politecnico di Milano, Milano, ItalyThermo-active diaphragm walls have proved their effectiveness in the thermal conditioning of buildings and infrastructures. However, some aspects still need to be investigated in order to tailor methods and tools for an accurate prediction of their energy and structural performance. In this perspective, some issues are addressed that concern the definition of models for the numerical analysis, in particular issues about the modelling of geometry and thermal boundary conditions. Taking advantage of a monitoring programme on a real full-scale structure, this research focuses on the assessment of heat transfer process and thermal response of diaphragm wall and soil mass on the basis of field data. Understanding of the heat transfer process contributes to the definition of the time-dependent thermal boundary conditions at the excavation side. From the analysis of thermal gradients in the wall, the condition at the excavation side is recognised as a major factor that influences the heat transfer process, governing the direction of the heat flux in different seasons of operation of the geothermal system. Keywords: Heat transfer, Monitoring data, Near-surface geothermal energy, Energy geostructurehttp://www.sciencedirect.com/science/article/pii/S1674775518301276
collection DOAJ
language English
format Article
sources DOAJ
author Donatella Sterpi
Adriana Angelotti
Omid Habibzadeh-Bigdarvish
Daniel Jalili
spellingShingle Donatella Sterpi
Adriana Angelotti
Omid Habibzadeh-Bigdarvish
Daniel Jalili
Assessment of thermal behaviour of thermo-active diaphragm walls based on monitoring data
Journal of Rock Mechanics and Geotechnical Engineering
author_facet Donatella Sterpi
Adriana Angelotti
Omid Habibzadeh-Bigdarvish
Daniel Jalili
author_sort Donatella Sterpi
title Assessment of thermal behaviour of thermo-active diaphragm walls based on monitoring data
title_short Assessment of thermal behaviour of thermo-active diaphragm walls based on monitoring data
title_full Assessment of thermal behaviour of thermo-active diaphragm walls based on monitoring data
title_fullStr Assessment of thermal behaviour of thermo-active diaphragm walls based on monitoring data
title_full_unstemmed Assessment of thermal behaviour of thermo-active diaphragm walls based on monitoring data
title_sort assessment of thermal behaviour of thermo-active diaphragm walls based on monitoring data
publisher Elsevier
series Journal of Rock Mechanics and Geotechnical Engineering
issn 1674-7755
publishDate 2018-12-01
description Thermo-active diaphragm walls have proved their effectiveness in the thermal conditioning of buildings and infrastructures. However, some aspects still need to be investigated in order to tailor methods and tools for an accurate prediction of their energy and structural performance. In this perspective, some issues are addressed that concern the definition of models for the numerical analysis, in particular issues about the modelling of geometry and thermal boundary conditions. Taking advantage of a monitoring programme on a real full-scale structure, this research focuses on the assessment of heat transfer process and thermal response of diaphragm wall and soil mass on the basis of field data. Understanding of the heat transfer process contributes to the definition of the time-dependent thermal boundary conditions at the excavation side. From the analysis of thermal gradients in the wall, the condition at the excavation side is recognised as a major factor that influences the heat transfer process, governing the direction of the heat flux in different seasons of operation of the geothermal system. Keywords: Heat transfer, Monitoring data, Near-surface geothermal energy, Energy geostructure
url http://www.sciencedirect.com/science/article/pii/S1674775518301276
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