A study on a porous residential building model in hot and humid regions: Part 1—the natural ventilation performance and the cooling load reduction effect of the building model

Hirano, Tomoko; Kato, Shinsuke; Murakami, Shuzo; Ikaga, Toshiharu; Shiraishi, Yasuyuki

doi:10.1016/j.buildenv.2005.01.018

Cited by 40 publications

(19 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[9][10][11]13,15,[30][31][32][33][34]), simulations with zonal and multizone network models (e.g. [35][36][37][38]) and Computational Fluid Dynamics (CFD) models (e.g. [8,[21][22][23][24][39][40][41][42][43][44][45]).…”

Section: Introductionmentioning

confidence: 99%

CFD simulation of cross-ventilation for a generic isolated building: Impact of computational parameters

Ramponi

Blocken

2012

Building and Environment

452

271

View full text Add to dashboard Cite

• Extensive literature review on numerical cross-ventilation studies in overview table.• Detailed sensitivity analysis for CFD simulations of a cross-ventilated building model.• The SST k-ω turbulence model shows the best agreement with PIV measurements.• The turbulent kinetic energy strongly influences the convergence and the results.• The prediction of the outdoor standing vortex largely affects the indoor airflow. AbstractAccurate CFD simulation of coupled outdoor wind flow and indoor air flow is essential for the design and evaluation of natural cross-ventilation strategies for buildings. It is widely recognized that CFD simulations can be very sensitive to the large number of computational parameters that have to be set by the user. Therefore, detailed and generic sensitivity analyses of the impact of these parameters on the simulation results are important to provide guidance for the execution and evaluation of future CFD studies. A detailed review of the literature indicates that there is a lack of extensive generic sensitivity studies for CFD simulation of natural cross-ventilation. In order to provide such a study, this paper presents a series of coupled 3D steady RANS simulations for a generic isolated building. The CFD simulations are validated based on detailed wind tunnel experiments with Particle Image Velocimetry. The impact of a wide range of computational parameters is investigated, including the size of the computational domain, the resolution of the computational grid, the inlet turbulent kinetic energy profile of the atmospheric boundary layer, the turbulence model, the order of the discretization schemes and the iterative convergence criteria. Specific attention is given to the problem of oscillatory convergence that was observed during some of these coupled CFD simulations. Based on this analysis, the paper identifies the most important parameters. The intention is to contribute to improved accuracy, reliability and evaluation of coupled CFD simulations for cross-ventilation assessment.

show abstract

Section: Introductionmentioning

confidence: 99%

CFD simulation of cross-ventilation for a generic isolated building: Impact of computational parameters

Ramponi

Blocken

2012

Building and Environment

452

271

View full text Add to dashboard Cite

show abstract

“…The works of Hirano et al [43], Haggag and Elmasry [44], and Pellegrino et al [45] are focused on mid-rise residential buildings. Hirano et al [43] explored the effects that porous residential buildings have on natural ventilation performance and, consequently, the cooling load reduction in hot and humid regions of Japan.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Hirano et al [43] explored the effects that porous residential buildings have on natural ventilation performance and, consequently, the cooling load reduction in hot and humid regions of Japan. Two residential building models, namely a model with a void ratio of 0%, and a "porous" model with a void ratio of 50%, are evaluated using computational fluid dynamics (CFD) analysis and a thermal and airflow network analysis.…”

Section: Literature Reviewmentioning

confidence: 99%

Effects of Vernacular Climatic Strategies (VCS) on Energy Consumption in Common Residential Buildings in Southern Iran: The Case Study of Bushehr City

et al. 2017

View full text Add to dashboard Cite

Abstract:This study aims to use the vernacular climatic strategies (VCS) of traditional dwellings in Bushehr, in the common residential buildings of this southern Iranian city (which is characterized by its hot and humid climate), and provide answers to the following question: What effects do VCS have in terms of energy consumption in these buildings? This study has been conducted at three levels. At the first level, three context-based climatic solutions including shading, natural ventilation, and insulation of external walls and roofs were identified and selected based on bibliographic study. At the second level, a case study reflecting the current typology of common residential buildings in Bushehr city was selected. A combination of the mentioned climatic solutions was used in the baseline case to create a developed model. Based on the space layout of the developed model and some design criteria, a series of proposed models was also created and modeled. The selected case study building was also used to establish a local weather station at a height of 12 m based on the roof, collecting local climate data which were then used for simulation to improve simulation accuracy. Finally, all models were simulated with the use of Design Builder software under natural ventilation conditions during moderate climatic periods of the year while split air-conditioning systems were used during hot and humid periods. The results showed reductions of 16% in energy consumption and 22% in CO 2 emissions for the developed model, and reductions of 24-26% in energy consumption and 32-34% in CO 2 emissions for the proposed models, as compared with the baseline model. Furthermore, all proposed models achieved lower annual energy consumption when compared with a selection of international sustainable low energy standards and domestic energy performance references for the Middle East region. Further studies are also recommended, and there is potential for combining VCS with other solutions such as on-site renewable energies.

show abstract

“…There are number of studies show the advantages of natural ventilation in hot and humid climate. Two of the advantages are it can decline the latent and total cooling loads, as concluded by Hiranoa, et al (2006), and could cut down air-conditioning energy use up to 24% as summarized by (Yik & Lun, 2010). However, there is still no systematic and quantitative research done for the traditional houses' natural ventilation, for the traditional houses' natural ventilation (Eduard, 2014).…”

Section: Introductionmentioning

confidence: 99%

Investigation of Indonesian Traditional Houses through CFD Simulation

SUHENDRI

Koerniawan

2017

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

Abstract. Modern buildings in Indonesia rely mostly on artificial lighting, heating, cooling and ventilation. It means more energy is used to drive mechanical appliances, and presumably not sustainable. Meanwhile modern buildings consume much energy, traditional architectures are known as the source of knowledge for sustainable, energy efficient and climate responsive design. Noticeably, one of the differences between modern and traditional buildings in Indonesia is shown in their strategy to provide thermal comfort to the user. Traditional buildings use natural ventilation, but modern buildings use mechanical air conditioning. By focusing on wind-driven ventilation, the study aims to investigate natural ventilation strategy of Indonesian traditional house, and their potential improvement to be used in modern Indonesian buildings. Three traditional houses are studied in this research, representing west, central, and east Indonesia. The houses are Lampung traditional house, Javanese traditional house, and Toraja traditional house. CFD simulation is conducted to simulate wind-driven ventilation behaviour and the temperature of the buildings. Concisely, the wind-natural ventilation of case study houses is potential to provide thermal comfort inside the houses. However, the strategy still can be optimized by adding some other passive design strategies: sun-shading; vegetation; or buildings arrangement in the traditional dwelling. Consideration about the roof's shape and windows position to the roof is important as well to create a uniform air distribution.

show abstract

A study on a porous residential building model in hot and humid regions: Part 1—the natural ventilation performance and the cooling load reduction effect of the building model

Cited by 40 publications

References 6 publications

CFD simulation of cross-ventilation for a generic isolated building: Impact of computational parameters

CFD simulation of cross-ventilation for a generic isolated building: Impact of computational parameters

Effects of Vernacular Climatic Strategies (VCS) on Energy Consumption in Common Residential Buildings in Southern Iran: The Case Study of Bushehr City

Investigation of Indonesian Traditional Houses through CFD Simulation

Contact Info

Product

Resources

About