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Open AccessArticle

Thermal Performance of Vertical Courtyard System in Office Buildings Under Typical Hot Days in Hot-Humid Climate Area: A Case Study

by Jin Wei 1, Fangsi Yu 2, Haixiu Liang 1,* and Maohui Luo 3,*
1
School of Architecture, South China University of Technology, No.381 Wushan Road, Guangzhou 510640, China
2
School of Architecture & Environment, College of Design, University of Oregon, Eugene, OR 97403, USA
3
Center for Built Environment, University of California Berkeley, Wurster Hall, Berkeley, CA 94720, USA
*
Authors to whom correspondence should be addressed.
Sustainability 2020, 12(7), 2591; https://doi.org/10.3390/su12072591 (registering DOI)
Received: 6 January 2020 / Revised: 7 March 2020 / Accepted: 19 March 2020 / Published: 25 March 2020
(This article belongs to the Collection Sustainable Built Environment)
Due to the different types of courtyards in vertical courtyard system (VCS), their impacts on thermal performance in office buildings may vary. To better understand this issue, this paper investigates the thermal performance impact of three typical vertical courtyards. A field case study was conducted in VCSs during two typical extreme hot days under hot-humid climate conditions. The results show that the vertical courtyards have significant cooling effects under hot-humid climatic conditions. Via testing on linear, integrated, and rooftop courtyard with fusion layout, the fusion one has an obviously positive impact on air temperature reduction (4.3 °C). Compared with the linear and integrated courtyards, the maximum air temperature difference of fusion layout is around 1.6 °C. The thermal radiation environment of the fusion layout was better than that of the other two (linear and integrated). Besides, the surface temperature of the pavements (wood panel) in the vertical courtyards can reach 47 °C, while the vegetation can lower it by 8 °C under the same weather conditions. These findings show that the courtyard with fusion layout is more suitable for extreme hot weather conditions. View Full-Text
Keywords: vertical courtyard system; thermal conditions; cooling effect; hot-humid climate; field measurement vertical courtyard system; thermal conditions; cooling effect; hot-humid climate; field measurement
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Wei, J.; Yu, F.; Liang, H.; Luo, M. Thermal Performance of Vertical Courtyard System in Office Buildings Under Typical Hot Days in Hot-Humid Climate Area: A Case Study. Sustainability 2020, 12, 2591.

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