Effect of thermal bridges on the energy performance of Chinese residential buildings
Thermal bridges may represent up to 50 % of the building's envelope area and may increase the energy consumption of buildings by up to 30 %, however their impact is often not taken into account adequately in China. In this study, the energy performance of a typical two-story residential buildin...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2025-06-01
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| Series: | Energy and Built Environment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S266612332400014X |
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| author | Guojie Chen Yifan Hou Hua Ge Shuyan Zhang Xiangwei Liu Xingguo Guo Dong Xie |
| author_facet | Guojie Chen Yifan Hou Hua Ge Shuyan Zhang Xiangwei Liu Xingguo Guo Dong Xie |
| author_sort | Guojie Chen |
| collection | DOAJ |
| description | Thermal bridges may represent up to 50 % of the building's envelope area and may increase the energy consumption of buildings by up to 30 %, however their impact is often not taken into account adequately in China. In this study, the energy performance of a typical two-story residential building under four different Chinese climate zones is investigated using WUFI Plus program in terms of annual heating and cooling energy demands. Several typical thermal bridges were taken into consideration. Two methods were used to evaluate the effect of thermal bridges on the building energy performance, the simplified method commonly used in China and the dynamic 3D modelling method, and were compared to do not consider thermal bridge. Also, two different types of building envelope, brick wall and aerated concrete wall, were used to evaluate the effect. The results show that by taking into account the thermal bridges, the annual heating energy demands of residential building increase 21.2 %, 24.8 %, 27.8 %, and 16.6 % under the four Chinese climate zones. Therefore, attention should be paid in the building envelope design to reduce thermal bridges. Compared to the dynamic 3D modelling method, the simplified method underestimates annual heating and cooling energy demands. |
| format | Article |
| id | doaj-art-1295924fc81f4a1a81cc6e2dd02c9e14 |
| institution | Kabale University |
| issn | 2666-1233 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Energy and Built Environment |
| spelling | doaj-art-1295924fc81f4a1a81cc6e2dd02c9e142025-02-08T05:01:13ZengKeAi Communications Co., Ltd.Energy and Built Environment2666-12332025-06-0163545554Effect of thermal bridges on the energy performance of Chinese residential buildingsGuojie Chen0Yifan Hou1Hua Ge2Shuyan Zhang3Xiangwei Liu4Xingguo Guo5Dong Xie6School of Civil Engineering, University of South China, Hengyang 421001, Peoples R China; Department of Building, Civil and Environmental Engineering, Concordia University, Montreal PQ H3G 1M8, Canada; Corresponding author.School of Civil Engineering, University of South China, Hengyang 421001, Peoples R ChinaDepartment of Building, Civil and Environmental Engineering, Concordia University, Montreal PQ H3G 1M8, CanadaSchool of Civil Engineering, University of South China, Hengyang 421001, Peoples R ChinaSchool of Civil Engineering and Architecture, Nanchang University, Nanchang 330031, Peoples R ChinaSchool of Civil Engineering and Architecture, Nanchang University, Nanchang 330031, Peoples R ChinaSchool of Civil Engineering, University of South China, Hengyang 421001, Peoples R ChinaThermal bridges may represent up to 50 % of the building's envelope area and may increase the energy consumption of buildings by up to 30 %, however their impact is often not taken into account adequately in China. In this study, the energy performance of a typical two-story residential building under four different Chinese climate zones is investigated using WUFI Plus program in terms of annual heating and cooling energy demands. Several typical thermal bridges were taken into consideration. Two methods were used to evaluate the effect of thermal bridges on the building energy performance, the simplified method commonly used in China and the dynamic 3D modelling method, and were compared to do not consider thermal bridge. Also, two different types of building envelope, brick wall and aerated concrete wall, were used to evaluate the effect. The results show that by taking into account the thermal bridges, the annual heating energy demands of residential building increase 21.2 %, 24.8 %, 27.8 %, and 16.6 % under the four Chinese climate zones. Therefore, attention should be paid in the building envelope design to reduce thermal bridges. Compared to the dynamic 3D modelling method, the simplified method underestimates annual heating and cooling energy demands.http://www.sciencedirect.com/science/article/pii/S266612332400014XBuilding envelopeThermal bridgesBuilding energy performanceSimplified method3D dynamic modelling method |
| spellingShingle | Guojie Chen Yifan Hou Hua Ge Shuyan Zhang Xiangwei Liu Xingguo Guo Dong Xie Effect of thermal bridges on the energy performance of Chinese residential buildings Energy and Built Environment Building envelope Thermal bridges Building energy performance Simplified method 3D dynamic modelling method |
| title | Effect of thermal bridges on the energy performance of Chinese residential buildings |
| title_full | Effect of thermal bridges on the energy performance of Chinese residential buildings |
| title_fullStr | Effect of thermal bridges on the energy performance of Chinese residential buildings |
| title_full_unstemmed | Effect of thermal bridges on the energy performance of Chinese residential buildings |
| title_short | Effect of thermal bridges on the energy performance of Chinese residential buildings |
| title_sort | effect of thermal bridges on the energy performance of chinese residential buildings |
| topic | Building envelope Thermal bridges Building energy performance Simplified method 3D dynamic modelling method |
| url | http://www.sciencedirect.com/science/article/pii/S266612332400014X |
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