Lowering Emissivity of Concrete Roof Tile’s Underside Cuts Down Heat Entry to the Building
Buildings in Southern China widely use a double-skin roof to reduce heat entry through the roof to the building interior during summertime. Concrete roof tiles are preferably installed as the outmost layer of the double-skin roof due to their resistance to hail and wind damages and their attractive...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/5438321 |
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| author | Xuejun Chen Lei Wang Zhikui Liu Yinghong Qin Ting Bao |
| author_facet | Xuejun Chen Lei Wang Zhikui Liu Yinghong Qin Ting Bao |
| author_sort | Xuejun Chen |
| collection | DOAJ |
| description | Buildings in Southern China widely use a double-skin roof to reduce heat entry through the roof to the building interior during summertime. Concrete roof tiles are preferably installed as the outmost layer of the double-skin roof due to their resistance to hail and wind damages and their attractive price. However, after construction, the tile’s top tends to be darkened by dust deposit and algae growth, increasing the heat entry through the roof to the building. Here, we show that this heat entry can be curtailed by lowering the emissivity at the tile’s underside. Temperatures and heat fluxes at different elevations of a double-skin roof with concrete tiles as the outmost layer of the roof are monitored. The underside of each concrete tile is coated with a specific paint to get a unique emissivity. Observations reveal that lowering the emissivity of concrete roof tiles could cut down the summer heat gain of buildings in tropical regions. |
| format | Article |
| id | doaj-art-9d3e439996e9413ab8320e68eb281665 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-9d3e439996e9413ab8320e68eb2816652025-02-03T01:30:15ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422019-01-01201910.1155/2019/54383215438321Lowering Emissivity of Concrete Roof Tile’s Underside Cuts Down Heat Entry to the BuildingXuejun Chen0Lei Wang1Zhikui Liu2Yinghong Qin3Ting Bao4College of Civil Engineering and Architecture, Guilin University of Technology, 541004 Guilin, ChinaCollege of Civil Engineering and Architecture, Guilin University of Technology, 541004 Guilin, ChinaCollege of Civil Engineering and Architecture, Guilin University of Technology, 541004 Guilin, ChinaCollege of Civil Engineering and Architecture, Guilin University of Technology, 541004 Guilin, ChinaDepartment of Civil and Environmental Engineering, Michigan Technological University, Houghton, MI 49931, USABuildings in Southern China widely use a double-skin roof to reduce heat entry through the roof to the building interior during summertime. Concrete roof tiles are preferably installed as the outmost layer of the double-skin roof due to their resistance to hail and wind damages and their attractive price. However, after construction, the tile’s top tends to be darkened by dust deposit and algae growth, increasing the heat entry through the roof to the building. Here, we show that this heat entry can be curtailed by lowering the emissivity at the tile’s underside. Temperatures and heat fluxes at different elevations of a double-skin roof with concrete tiles as the outmost layer of the roof are monitored. The underside of each concrete tile is coated with a specific paint to get a unique emissivity. Observations reveal that lowering the emissivity of concrete roof tiles could cut down the summer heat gain of buildings in tropical regions.http://dx.doi.org/10.1155/2019/5438321 |
| spellingShingle | Xuejun Chen Lei Wang Zhikui Liu Yinghong Qin Ting Bao Lowering Emissivity of Concrete Roof Tile’s Underside Cuts Down Heat Entry to the Building Advances in Materials Science and Engineering |
| title | Lowering Emissivity of Concrete Roof Tile’s Underside Cuts Down Heat Entry to the Building |
| title_full | Lowering Emissivity of Concrete Roof Tile’s Underside Cuts Down Heat Entry to the Building |
| title_fullStr | Lowering Emissivity of Concrete Roof Tile’s Underside Cuts Down Heat Entry to the Building |
| title_full_unstemmed | Lowering Emissivity of Concrete Roof Tile’s Underside Cuts Down Heat Entry to the Building |
| title_short | Lowering Emissivity of Concrete Roof Tile’s Underside Cuts Down Heat Entry to the Building |
| title_sort | lowering emissivity of concrete roof tile s underside cuts down heat entry to the building |
| url | http://dx.doi.org/10.1155/2019/5438321 |
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