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A platform for research: civil engineering, architecture and urbanism
Thermal Performance of Green and Cool Roofs: A Field Experiment Combining Night Ventilation
Cool roofs, green roofs, and natural ventilation as representative passive cooling strategies are favored by many architects. However, existing studies have not fully explored the potential benefits of integrating these technologies, particularly when cool roofs or green roofs are used in combination with night ventilation. In this study, a field trial was carried out in Chongqing to assess the thermal performance of green roofs (GRs), cool roofs (CRs), aerated concrete insulated roofs (ACRs), and bare roofs (BRs) when combined with night ventilation for cooling. The results show that several functional roofs can reduce the external surface temperature of the roof structure layer by about 10 to 20 °C due to the shading effect. However, using those strategies separately has the potential to bring about poor thermal performance at night. A promising solution is combined roofing and night ventilation techniques, as the combination of these two techniques would be conducive to reduce indoor temperatures throughout the day. Nevertheless, it was concluded that a green roof is still a better roof solution than a cool roof or an insulated roof when combined with night ventilation.
Thermal Performance of Green and Cool Roofs: A Field Experiment Combining Night Ventilation
Cool roofs, green roofs, and natural ventilation as representative passive cooling strategies are favored by many architects. However, existing studies have not fully explored the potential benefits of integrating these technologies, particularly when cool roofs or green roofs are used in combination with night ventilation. In this study, a field trial was carried out in Chongqing to assess the thermal performance of green roofs (GRs), cool roofs (CRs), aerated concrete insulated roofs (ACRs), and bare roofs (BRs) when combined with night ventilation for cooling. The results show that several functional roofs can reduce the external surface temperature of the roof structure layer by about 10 to 20 °C due to the shading effect. However, using those strategies separately has the potential to bring about poor thermal performance at night. A promising solution is combined roofing and night ventilation techniques, as the combination of these two techniques would be conducive to reduce indoor temperatures throughout the day. Nevertheless, it was concluded that a green roof is still a better roof solution than a cool roof or an insulated roof when combined with night ventilation.
Thermal Performance of Green and Cool Roofs: A Field Experiment Combining Night Ventilation
Environ Sci Eng
Wang, Liangzhu Leon (editor) / Ge, Hua (editor) / Zhai, Zhiqiang John (editor) / Qi, Dahai (editor) / Ouf, Mohamed (editor) / Sun, Chanjuan (editor) / Wang, Dengjia (editor) / Ran, Jiandong (author) / Feng, Ya (author) / Tang, Mingfang (author)
International Conference on Building Energy and Environment ; 2022
Proceedings of the 5th International Conference on Building Energy and Environment ; Chapter: 61 ; 571-582
2023-09-05
12 pages
Article/Chapter (Book)
Electronic Resource
English
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