Numerical investigation of buildings point thermal bridges observed on window-thermal insulation interface
Practices to avoid thermal bridges in the building shell, consists one of the key elements in the comprehensive assessment of the energy behaviour of buildings. As we are moving fast to the era of nearly zero energy buildings, both the use of non-invasive measurement techniques as well as the use of...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509521002837 |
| _version_ | 1819127146742808576 |
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| author | Justas Terentjevas Monika Šadauskaitė Jolanta Šadauskienė Juozas Ramanauskas Andrius Buska Paris A. Fokaides |
| author_facet | Justas Terentjevas Monika Šadauskaitė Jolanta Šadauskienė Juozas Ramanauskas Andrius Buska Paris A. Fokaides |
| author_sort | Justas Terentjevas |
| collection | DOAJ |
| description | Practices to avoid thermal bridges in the building shell, consists one of the key elements in the comprehensive assessment of the energy behaviour of buildings. As we are moving fast to the era of nearly zero energy buildings, both the use of non-invasive measurement techniques as well as the use of analytical and numerical models, have intensified research and substantiated best practices around this interesting issue. The sole criterion of the energy assessment of thermal bridges is the reduction of the heat losses, thus heat transfer analysis dominates the field.This short technical note presents and analyses the thermal behaviour of point thermal bridges, observed in areas of higher thermal transmittance at the joints of windows and supporting structures through different types of fasteners. Specifically, the method of direct support of windows in a layer of stone wool is considered, and the energy performance of three alternative ways of supporting the construction is examined. The heat transfer assessment of the investigated solutions is conducted with the use of numerical analysis, performed with the use of two analytical tools (THERM and HEAT3), in two- and three dimensional domains. The work concludes with substantiated suggestions in relation to the solutions that are proposed, always guided by the reduction in energy consumption. The paper aspires to provide informed answers to engineers and researchers in the field of energy efficiency of buildings, thus creating the field for future developments in the field of point thermal point bridges in window. |
| first_indexed | 2024-12-22T08:07:18Z |
| format | Article |
| id | doaj.art-b338f915e46e46958692e8a1dfc86ea4 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-12-22T08:07:18Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-b338f915e46e46958692e8a1dfc86ea42022-12-21T18:33:06ZengElsevierCase Studies in Construction Materials2214-50952021-12-0115e00768Numerical investigation of buildings point thermal bridges observed on window-thermal insulation interfaceJustas Terentjevas0Monika Šadauskaitė1Jolanta Šadauskienė2Juozas Ramanauskas3Andrius Buska4Paris A. Fokaides5Department of Physics, Faculty of Natural Sciences, Imperial College London, South Kensington Campus, London SW7 2AZ, UKEcole Polytechnique, Route de Saclay, 91128 Palaiseau Cedex, FranceFaculty of Civil Engineering and Architecture, Kaunas University of Technology, Studentu Str. 48, LT-51367 Kaunas, Lithuania; Corresponding author at: Faculty of Civil Engineering and Architecture, Kaunas University of Technology, Studentu Str. 48, LT-51367 Kaunas, Lithuania.Faculty of Civil Engineering and Architecture, Kaunas University of Technology, Studentu Str. 48, LT-51367 Kaunas, Lithuania; Building Physics Laboratory of Institute of Architecture and Construction, Kaunas University of Technology, Tunelio Str. 60, LT-44405 Kaunas, LithuaniaRockwool UAB, A.Gostauto Str. 40B, LT-01112 Vilnius, LithuaniaFaculty of Civil Engineering and Architecture, Kaunas University of Technology, Studentu Str. 48, LT-51367 Kaunas, Lithuania; School of Engineering, Frederick University, Frederickou Str., 1036 Nicosia, CyprusPractices to avoid thermal bridges in the building shell, consists one of the key elements in the comprehensive assessment of the energy behaviour of buildings. As we are moving fast to the era of nearly zero energy buildings, both the use of non-invasive measurement techniques as well as the use of analytical and numerical models, have intensified research and substantiated best practices around this interesting issue. The sole criterion of the energy assessment of thermal bridges is the reduction of the heat losses, thus heat transfer analysis dominates the field.This short technical note presents and analyses the thermal behaviour of point thermal bridges, observed in areas of higher thermal transmittance at the joints of windows and supporting structures through different types of fasteners. Specifically, the method of direct support of windows in a layer of stone wool is considered, and the energy performance of three alternative ways of supporting the construction is examined. The heat transfer assessment of the investigated solutions is conducted with the use of numerical analysis, performed with the use of two analytical tools (THERM and HEAT3), in two- and three dimensional domains. The work concludes with substantiated suggestions in relation to the solutions that are proposed, always guided by the reduction in energy consumption. The paper aspires to provide informed answers to engineers and researchers in the field of energy efficiency of buildings, thus creating the field for future developments in the field of point thermal point bridges in window.http://www.sciencedirect.com/science/article/pii/S2214509521002837Thermal bridgePoint thermal bridgeWindowNumerical analysisTHERMHEAT3 |
| spellingShingle | Justas Terentjevas Monika Šadauskaitė Jolanta Šadauskienė Juozas Ramanauskas Andrius Buska Paris A. Fokaides Numerical investigation of buildings point thermal bridges observed on window-thermal insulation interface Case Studies in Construction Materials Thermal bridge Point thermal bridge Window Numerical analysis THERM HEAT3 |
| title | Numerical investigation of buildings point thermal bridges observed on window-thermal insulation interface |
| title_full | Numerical investigation of buildings point thermal bridges observed on window-thermal insulation interface |
| title_fullStr | Numerical investigation of buildings point thermal bridges observed on window-thermal insulation interface |
| title_full_unstemmed | Numerical investigation of buildings point thermal bridges observed on window-thermal insulation interface |
| title_short | Numerical investigation of buildings point thermal bridges observed on window-thermal insulation interface |
| title_sort | numerical investigation of buildings point thermal bridges observed on window thermal insulation interface |
| topic | Thermal bridge Point thermal bridge Window Numerical analysis THERM HEAT3 |
| url | http://www.sciencedirect.com/science/article/pii/S2214509521002837 |
| work_keys_str_mv | AT justasterentjevas numericalinvestigationofbuildingspointthermalbridgesobservedonwindowthermalinsulationinterface AT monikasadauskaite numericalinvestigationofbuildingspointthermalbridgesobservedonwindowthermalinsulationinterface AT jolantasadauskiene numericalinvestigationofbuildingspointthermalbridgesobservedonwindowthermalinsulationinterface AT juozasramanauskas numericalinvestigationofbuildingspointthermalbridgesobservedonwindowthermalinsulationinterface AT andriusbuska numericalinvestigationofbuildingspointthermalbridgesobservedonwindowthermalinsulationinterface AT parisafokaides numericalinvestigationofbuildingspointthermalbridgesobservedonwindowthermalinsulationinterface |