Thermal modeling of the convective heat transfer in the large air cavities of the 3D concrete printed walls
The cavity walls are a widely used construction system. They became popular in traditional masonry construction for their capacity to reduce the passage of moisture and improve the walls’ thermal performance. However, the latter only applied to narrow cavities with restricted internal air movement....
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2022-12-01
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| Series: | Cogent Engineering |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/23311916.2022.2130203 |
| _version_ | 1797759527845625856 |
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| author | Abraham Mansouri Alreem Binali Abdulla Aljawi Ahmed Alhammadi Khalid Almir Ebrahim Alnuaimi Hamad Alyousuf Edwin Rodriguez-Ubinas |
| author_facet | Abraham Mansouri Alreem Binali Abdulla Aljawi Ahmed Alhammadi Khalid Almir Ebrahim Alnuaimi Hamad Alyousuf Edwin Rodriguez-Ubinas |
| author_sort | Abraham Mansouri |
| collection | DOAJ |
| description | The cavity walls are a widely used construction system. They became popular in traditional masonry construction for their capacity to reduce the passage of moisture and improve the walls’ thermal performance. However, the latter only applied to narrow cavities with restricted internal air movement. Cavities are also present in emerging technologies, such as 3D concrete printed walls. However, the large cavities of the 3D printed concrete walls have high convective heat transfers that affect the envelope’s thermal performance. Therefore, the authors developed a conjugate heat transfer finite element model to study the large cavities in 3D printed concrete walls and determine the effect on the convective heat transfer of subdividing large cavities. The results show it is possible to reduce the heat flux four times, from 40.4 W/m2 to 9.1 W/m2, subdividing a large cavity into sixteen small ones. This reduction might be higher, increasing the number of cavity subdivisions. However, it is infeasible to restrict the air movements in unfilled air cavities over 25 mm wide for the Rayleigh numbers ≥ 105. Therefore, the practicality of minimizing heat transfer by subdividing large air cavities in 3D printed walls is limited. |
| first_indexed | 2024-03-12T18:45:41Z |
| format | Article |
| id | doaj.art-666db772c66d4d8391419ed3dd44184f |
| institution | Directory Open Access Journal |
| issn | 2331-1916 |
| language | English |
| last_indexed | 2024-03-12T18:45:41Z |
| publishDate | 2022-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Cogent Engineering |
| spelling | doaj.art-666db772c66d4d8391419ed3dd44184f2023-08-02T07:40:14ZengTaylor & Francis GroupCogent Engineering2331-19162022-12-019110.1080/23311916.2022.2130203Thermal modeling of the convective heat transfer in the large air cavities of the 3D concrete printed wallsAbraham Mansouri0Alreem Binali1Abdulla Aljawi2Ahmed Alhammadi3Khalid Almir4Ebrahim Alnuaimi5Hamad Alyousuf6Edwin Rodriguez-Ubinas7Department of Mechanical Engineering, Higher College of Technology, DBM, Dubai, UAE, 15825Department of Mechanical Engineering, Higher College of Technology, DBM, Dubai, UAE, 15825Department of Mechanical Engineering, Higher College of Technology, DBM, Dubai, UAE, 15825Department of Mechanical Engineering, Higher College of Technology, DBM, Dubai, UAE, 15825Department of Mechanical Engineering, Higher College of Technology, DBM, Dubai, UAE, 15825Department of Mechanical Engineering, Higher College of Technology, DBM, Dubai, UAE, 15825Department of Mechanical Engineering, Higher College of Technology, DBM, Dubai, UAE, 15825DEWA R&D Center, Dubai Electricity and Water Authority, Dubai, UAEThe cavity walls are a widely used construction system. They became popular in traditional masonry construction for their capacity to reduce the passage of moisture and improve the walls’ thermal performance. However, the latter only applied to narrow cavities with restricted internal air movement. Cavities are also present in emerging technologies, such as 3D concrete printed walls. However, the large cavities of the 3D printed concrete walls have high convective heat transfers that affect the envelope’s thermal performance. Therefore, the authors developed a conjugate heat transfer finite element model to study the large cavities in 3D printed concrete walls and determine the effect on the convective heat transfer of subdividing large cavities. The results show it is possible to reduce the heat flux four times, from 40.4 W/m2 to 9.1 W/m2, subdividing a large cavity into sixteen small ones. This reduction might be higher, increasing the number of cavity subdivisions. However, it is infeasible to restrict the air movements in unfilled air cavities over 25 mm wide for the Rayleigh numbers ≥ 105. Therefore, the practicality of minimizing heat transfer by subdividing large air cavities in 3D printed walls is limited.https://www.tandfonline.com/doi/10.1080/23311916.2022.21302033D concrete printed wallsheat transfercavity wallsmodeling |
| spellingShingle | Abraham Mansouri Alreem Binali Abdulla Aljawi Ahmed Alhammadi Khalid Almir Ebrahim Alnuaimi Hamad Alyousuf Edwin Rodriguez-Ubinas Thermal modeling of the convective heat transfer in the large air cavities of the 3D concrete printed walls Cogent Engineering 3D concrete printed walls heat transfer cavity walls modeling |
| title | Thermal modeling of the convective heat transfer in the large air cavities of the 3D concrete printed walls |
| title_full | Thermal modeling of the convective heat transfer in the large air cavities of the 3D concrete printed walls |
| title_fullStr | Thermal modeling of the convective heat transfer in the large air cavities of the 3D concrete printed walls |
| title_full_unstemmed | Thermal modeling of the convective heat transfer in the large air cavities of the 3D concrete printed walls |
| title_short | Thermal modeling of the convective heat transfer in the large air cavities of the 3D concrete printed walls |
| title_sort | thermal modeling of the convective heat transfer in the large air cavities of the 3d concrete printed walls |
| topic | 3D concrete printed walls heat transfer cavity walls modeling |
| url | https://www.tandfonline.com/doi/10.1080/23311916.2022.2130203 |
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