Unravelling the impact of courtyard geometry on cooling energy consumption in buildings

Diz-Mellado, Eduardo; Ruiz–Pardo, Álvaro; Rivera-Gómez, Carlos; Flor, Francisco José Sánchez de la; Galán-Marín, Carmen

doi:10.1016/j.buildenv.2023.110349

Cited by 14 publications

(1 citation statement)

References 63 publications

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“…Eduardo Diz-Mellado et al discovered that when the aspect ratio (AR) of a courtyard exceeds three, the comfort level is achieved for 90-100% of the day's hours, and when the AR is between two and three, it reaches approximately 70-80%. Moreover, the cooling requirements of courtyards vary significantly based on their AR, with differences of up to 18% [25,26]. Similarly, Nazanin Nasrollahi et al found that courtyards with high height-to-width (H/W) ratios and a southward orientation offered better shading during summer while permitting solar radiation in and regulating the wind speed during winter [27].…”

Section: Introductionmentioning

confidence: 99%

Examining the Effects of Tree Canopy Coverage on Human Thermal Comfort and Heat Dynamics in Courtyards: A Case Study in Hot-Humid Regions

Lin,

Yang,

Huang

et al. 2023

Atmosphere

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Providing thermal comfort in the courtyards of academic buildings is important and increasing tree canopy coverage (TCC) presents a convenient and feasible method to achieve this; however, few studies have comprehensively evaluated the cooling effects of TCC, considering both outdoor thermal comfort and heat dynamics. In this study, we selected two typical academic buildings at Guangzhou University, each with courtyards having different height-to-width ratios (H/W ratios). We employed both field measurements and ENVI-met-based numerical models to simulate scenarios with varying TCCs. The results demonstrated that the cooling effects caused by arranging trees increase with the TCC values. During the hottest hours of the day, trees arranged in courtyards with high H/W ratios exhibited a superior cooling effect compared to those in courtyards with low H/W ratios, with a difference of up to 0.6 °C in the PET (physiological equivalent temperature); however, over the entire daytime, the total sensible heat reduction achieved by trees in courtyards with low H/W ratios surpassed that of courtyards with high H/W ratios, with a difference of up to 0.25 × 104 J/m2. Our findings underscore the crucial role of TCC in enhancing cooling in the courtyard of academic buildings, with important implications for university planning and design.

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Section: Introductionmentioning

confidence: 99%

Examining the Effects of Tree Canopy Coverage on Human Thermal Comfort and Heat Dynamics in Courtyards: A Case Study in Hot-Humid Regions

Lin,

Yang,

Huang

et al. 2023

Atmosphere

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The Energy Rehabilitation of a Riad’s Building Located in the Mediterranean Climate

Eraza,

Laaroussi,

Hajji

et al. 2023

Springer Proceedings in Earth and Environmental Sciences

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The mutual impacts of individual building design and local microclimate in high-density cities and the major influential parameters

Zhao,

Li,

Wang

2024

Build. Simul.

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Development of individual building in existing district is common in high-density cities due to the limited space. Such development affects the local microclimate naturally, but the interaction is ignored in current building design practices. In this study, a comprehensive and systematic analysis is conducted to investigate the mutual impacts between new individual building design and local microclimate considering the interaction, and to identify the major influential building parameters on both local microclimate and building energy performance in subtropical urban area. A large number of high-resolution microclimate and building simulations are performed based on advanced GIS spatial analysis techniques under different building designs for the assessment of mutual impacts. A global sensitivity analysis is conducted to identify the major influential building parameters. The results show that different building designs lead to significant variation of local wind velocity (i.e., −0.95 to +4.51 m/s) and air temperature (i.e., −0.60 to +1.17 K), while the local microclimate results in a change in the building energy consumption from −41.75 to 291.54 kJ/m2. The major influential parameters on both pedestrian thermal discomfort and building energy performance are building height and overall heat transfer coefficient of the building envelope. This study provides valuable references for new building or rebuilding design in order to facilitate carbon neutrality and enhance thermal comfort in urban area.

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Unravelling the impact of courtyard geometry on cooling energy consumption in buildings

Cited by 14 publications

References 63 publications

Examining the Effects of Tree Canopy Coverage on Human Thermal Comfort and Heat Dynamics in Courtyards: A Case Study in Hot-Humid Regions

Examining the Effects of Tree Canopy Coverage on Human Thermal Comfort and Heat Dynamics in Courtyards: A Case Study in Hot-Humid Regions

The Energy Rehabilitation of a Riad’s Building Located in the Mediterranean Climate

The mutual impacts of individual building design and local microclimate in high-density cities and the major influential parameters

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