Perspectives of naturally ventilated buildings: A review

Sakiyama, Nayara Rodrigues Marques; Carlo, Joyce Correna; Frick, Jürgen; Garrecht, Harald

doi:10.1016/j.rser.2020.109933

Cited by 58 publications

(19 citation statements)

References 186 publications

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“…This study extended the established basic knowledge described in the latest review articles [1,[6][7][8][9], which summarized the passive cooling effects of materials and on single houses or buildings. In addition to this prospective nature, the findings in this study bridge pieces of knowledge related to precise house/building/material-scale experiments and regional analyses largely supported by remote sensing.…”

Section: -2-comparison With Other Studiesmentioning

confidence: 64%

“…Passive cooling technologies have not been well investigated in real urban settings, however, and the extent to which they have been employed there to mitigate harsh and uncomfortable conditions is unknown. To date, passive cooling technologies have been intensively examined and evaluated in terms of their economic aspects [1], new materials for cooling (especially phase change materials) [6,7], structures involving plant bodies on rooftops and walls [8], and structures for effective ventilation [9]. The examination and evaluation of passive cooling technologies described in the latest review articles led us to theoretical generalizations, such as reduced energy consumption for active cooling [10].…”

Section: -Introductionmentioning

confidence: 99%

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Are New Residential Areas Cooler than Older Ones?

Doi

2022

Emerg Sci J

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This study was conducted to investigate if passive cooling technologies have been implemented in commercially supplied new residential areas in Bangkok and to observe if there were significant differences in the land surface temperature (LST) compared to old residential areas. Values of LST were compared among 62 residential areas that differed in completion year. The mean LST for the most recent residential areas completed in 2013 or later was significantly less than that for the other older categories, suggesting that passive cooling effects were significantly better functioning in the new residential areas. A roof treatment on old buildings in a public housing project was still quantitatively effective after 8 years. This suggested the possibility of a deteriorated cooling function in the older categories among the residential areas. The possibility of deterioration was quantitatively investigated. The results stressed the importance of the periodic maintenance of passive cooling functions. As an extension of precise basic studies, this is the first study to quantify the passive cooling effects on commercially supplied residential areas. In terms of spatial extent, this residential area–scale study bridges precise analyses of single buildings/materials and regional observations, mainly relying on satellite data. The study results can aid in the mitigation and prevention of the urban heat island phenomenon. Doi: 10.28991/ESJ-2022-06-06-08 Full Text: PDF

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Section: -2-comparison With Other Studiesmentioning

confidence: 64%

Section: -Introductionmentioning

confidence: 99%

Are New Residential Areas Cooler than Older Ones?

Doi

2022

Emerg Sci J

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“…When investigations are not on high building, and the wind forces can be considered sufficiently strong, the buoyance effect becomes negligible, and wind-driven natural ventilation can be the focus. Consequently, several studies are concentrated on measuring, evaluating, and predicting this passive strategy, especially in recent years because of sustainable and energy demand goals [16,32]. Some emphasize either cross-or single-sided ventilation, investigating specific topics such as the impact of the building dimensions [33], internal divisions [34], multiple windows [35], sheltering [36,37], adjacent obstacles [38,39], wind exchangers [40], large openings [41], and a greenhouse with a wind tower [42].…”

Section: State Of the Art In Wind-driven Natural Ventilation Investigationsmentioning

confidence: 99%

“…Different methods can be employed to address this task, including standards [5,6], guidelines [7,8], charts based on parametric analysis [9], empirical calculations [10], direct and indirect measurements [11], and building simulations [12][13][14][15]. An overview of these methods, with their respective outputs, can be found in [16,17].…”

Section: Introductionmentioning

confidence: 99%

Using CFD to Evaluate Natural Ventilation through a 3D Parametric Modeling Approach

et al. 2021

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Predicting building air change rates is a challenge for designers seeking to deal with natural ventilation, a more and more popular passive strategy. Among the methods available for this task, computational fluid dynamics (CFD) appears the most compelling, in ascending use. However, CFD simulations require a range of settings and skills that inhibit its wide application. With the primary goal of providing a pragmatic CFD application to promote wind-driven ventilation assessments at the design phase, this paper presents a study that investigates natural ventilation integrating 3D parametric modeling and CFD. From pre- to post-processing, the workflow addresses all simulation steps: geometry and weather definition, including incident wind directions, a model set up, control, results’ edition, and visualization. Both indoor air velocities and air change rates (ACH) were calculated within the procedure, which used a test house and air measurements as a reference. The study explores alternatives in the 3D design platform’s frame to display and compute ACH and parametrically generate surfaces where air velocities are computed. The paper also discusses the effectiveness of the reference building’s natural ventilation by analyzing the CFD outputs. The proposed approach assists the practical use of CFD by designers, providing detailed information about the numerical model, as well as enabling the means to generate the cases, visualize, and post-process the results.

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“…This supposes a great limitation for the use of NV in real applications and discourages its implementation, since it represents a potential risk for building designers. To overcome this issue, the primary tool accepted for designing naturally ventilated buildings is the computational simulation (Sakiyama et al 2020). In particular, computational fluid dynamics (CFD) is preferred when a high resolution of temporal and spatial indoor environment information is required.…”

Section: Introductionmentioning

confidence: 99%

A cloud-based platform to predict wind pressure coefficients on buildings

Bre

Giménez

2022

Build. Simul.

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Natural ventilation (NV) is a key passive strategy to design energy-efficient buildings and improve indoor air quality. Therefore, accurate modeling of the NV effects is a basic requirement to include this technique during the building design process. However, there is an important lack of wind pressure coefficients ( C p ) data, essential input parameters for NV models. Besides this, there are no simple but still reliable tools to predict C p data on buildings with arbitrary shapes and surrounding conditions, which means a significant limitation to NV modeling in real applications. For this reason, the present contribution proposes a novel cloud-based platform to predict wind pressure coefficients on buildings. The platform comprises a set of tools for performing fully unattended computational fluid dynamics (CFD) simulations of the atmospheric boundary layer and getting reliable C p data for actual scenarios. CFD-expert decisions throughout the entire workflow are implemented to automatize the generation of the computational domain, the meshing procedure, the solution stage, and the post-processing of the results. To evaluate the performance of the platform, an exhaustive validation against wind tunnel experimental data is carried out for a wide range of case studies. These include buildings with openings, balconies, irregular floor-plans, and surrounding urban environments. The C p results are in close agreement with experimental data, reducing 60%–77% the prediction error on the openings regarding the EnergyPlus software. The platform introduced shows being a reliable and practical C p data source for NV modeling in real building design scenarios. Electronic Supplementary Material (ESM) The appendix is available in the online version of this article at 10.1007/s12273-021-0881-9.

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Perspectives of naturally ventilated buildings: A review

Cited by 58 publications

References 186 publications

Are New Residential Areas Cooler than Older Ones?

Are New Residential Areas Cooler than Older Ones?

Using CFD to Evaluate Natural Ventilation through a 3D Parametric Modeling Approach

A cloud-based platform to predict wind pressure coefficients on buildings

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