Research on the influence of outdoor trees on natural ventilation performance of an academic building

Niu, Shengnan; Liu, Xiaodong; Wang, Annan; Chen, Lufang; Zhou, Xia; Shi, Xing; Liu, Yang; Jin, Xing

doi:10.1007/s12273-022-0977-x

Cited by 6 publications

(4 citation statements)

References 36 publications

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“…In summer, for any of the types, it is the form with the smallest angle between the spatial orientation and the prevailing wind direction that has the largest RTCA of the target zone, which is in agreement with the studies related to the design of building façade opening [22,23,76]. In winter, it is also the form that the smaller the prevailing wind direction, the larger the RTCA of the target zone [91] and the better the thermal comfort. In addition, it is suggested that the ECS on the northwest side of the square, which is facing the NW of the winter prevailing winds, eliminate the opening as an optimized design [34].…”

Section: Design Matters: Geometric Form Operation Beyond Categorical ...supporting

confidence: 87%

“…Century Square is composed of a variety of spatial types, of which the opening of the square ECS is the recommended type in summer. The ECS serves as the vertical definition of the square space, and its windward opening produces an accelerating effect that draws wind into the square [48,91]. On the other hand, in winter, the square ECS acts as a vertical enclosure for wind protection, and its leeward area is the proposed spatial type and should adhere to an ECS with no openings on the windward face [34].…”

Section: Screening Types From Spatial Heterogeneitymentioning

confidence: 99%

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Optimization of Landscape Spatial Configuration and Form for Thermal Comfort: A Case Study of Urban Square, Shanghai

Ma,

Chen,

Gao

et al. 2023

Atmosphere

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Outdoor public spaces that provide a comfortable microclimate significantly contribute to urban livability. However, more elaborate investigations are needed to enhance the research-based design of landscape spatial form for optimal thermal comfort performance. This study aimed to optimize the morphological design of urban squares considering summer and winter microclimates by integrating multiple landscape elements of vegetation, waterbodies, buildings, and ground. The built environment microclimate simulation and validation of multi-physics coupling were conducted for thermal comfort, planar heterogeneity diagramming, and spatial typology identification. Further, research through design (RtD) was applied to reconstruct various spatial configurations and orientation forms to compare the relative thermal comfort areas of these geometrical prototypes in the target time period and square core zone. Among the landscape types, two identified spatial types for achieving better thermal comfort are the opening of a windward enclosure structure (ECS) that draws wind into the square in summer and an ECS without a windward opening that creates a more extended wind protection area in winter. Moreover, results of RtD show that the prototype with the smallest orientation angle to the prevailing wind direction has the most optimized thermal comfort during summer, while the form with a smaller angle to the prevailing wind direction is more favorable in winter. These findings provide methodological guidance for climate-adapted landscape square form optimization.

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Section: Design Matters: Geometric Form Operation Beyond Categorical ...supporting

confidence: 87%

Section: Screening Types From Spatial Heterogeneitymentioning

confidence: 99%

Optimization of Landscape Spatial Configuration and Form for Thermal Comfort: A Case Study of Urban Square, Shanghai

Ma,

Chen,

Gao

et al. 2023

Atmosphere

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“…At the same time, the construction of VCWs and VCVs should be increased as much as possible. Because the cooling effect of the VCI is the weakest, VCWs and VCVs can be added to improve the thermal environment in the area where the LST is high, and only VCI passes [46,52,53].…”

Section: The Influence Of Vcs On Lstmentioning

confidence: 99%

A Data-Mining-Based Novel Approach to Analyze the Impact of the Characteristics of Urban Ventilation Corridors on Cooling Effect

Shen,

Liu,

Yang

et al. 2024

Buildings

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The appropriate design of urban ventilation corridors (VCs) can improve the urban thermal environment, thereby reducing urban energy consumption and promoting sustainable urban development. However, existing research lacks a comprehensive grasp of the characteristics of VCs from multiple dimensions and quantitative analysis of its cooling effect. We propose a novel approach based on data mining to comprehensively consider the morphological and environmental characteristics of VCs and explore the correlation between VC characteristics and the cooling effect. Selecting Nanjing as an example, a comprehensive index system was constructed, the cooling effect of the VC was investigated, and the optimal range of VC index with different underlying surface types was obtained. Results revealed that the cooling effect is closely related to the underlying surface, leading to a temperature difference of up to 5.4 °C. The VC cooling range can vary from 13 to 600 m. The recommended optimal parameter intervals for different VCs were determined. Finally, targeted strategies to alleviate the heat island effect were proposed for different underlying surface types. The study output contributes to the design of VCs, which is of great significance in alleviating the urban heat island effect and promoting sustainable development of cities.

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“…10 However, the existing literature based on field measurements and physical and numerical simulations points out the dependency of cross-ventilation on many indoor and outdoor factors. Among them, wind velocity, 11 wind direction, 12 turbulence intensity of approaching wind, 3,13 size and location of openings, 14,15 surrounding buildings, 16,17 and vegetation 18,19 have been identified as the main external factors that affect the cross-ventilation of buildings. In addition, indoor factors, such as internal wall designs, 20 internal openings, 14 and the arrangement of internal spaces 21 can significantly modify the cross-ventilation rates of buildings.…”

Section: Introductionmentioning

confidence: 99%

Effects of internal wall design on cross-ventilation of an isolated building

Zhang,

Weerasuriya,

Perera

et al. 2024

Physics of Fluids

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Poorly designed internal walls deter natural ventilation of buildings, causing poor indoor air quality and exorbitant energy costs when mechanical ventilation systems are used. Although one can design internal walls with minimum adverse effects on natural ventilation by controlling height, width, location, and porosity of internal walls, less research has been done to date. This study investigated how these four parameters individually and collectively influence the cross-ventilation of buildings using Reynolds-average Navier–Stokes equation-based computational fluid dynamics simulations and the local and global sensitivity analysis. When considering individual parameters, the local sensitivity analysis revealed the positive correlation between internal walls' porosity and cross-ventilation, similar to previous studies. However, the global sensitivity analysis identified the location as the most influential design parameter for cross-ventilation. Furthermore, the global sensitivity analysis revealed nonlinear, non-monotonic, and interactive relations between cross ventilation and all parameters but porosity, highlighting the importance of evaluating all design parameters together and the difficulty in extrapolating the findings for idealized to actual internal wall designs. Based on the findings, this study proposes narrow internal walls with high porosities built away from ventilation openings as a basic internal wall design to maximize the cross-ventilation of buildings.

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Research on the influence of outdoor trees on natural ventilation performance of an academic building

Cited by 6 publications

References 36 publications

Optimization of Landscape Spatial Configuration and Form for Thermal Comfort: A Case Study of Urban Square, Shanghai

Optimization of Landscape Spatial Configuration and Form for Thermal Comfort: A Case Study of Urban Square, Shanghai

A Data-Mining-Based Novel Approach to Analyze the Impact of the Characteristics of Urban Ventilation Corridors on Cooling Effect

Effects of internal wall design on cross-ventilation of an isolated building

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