Effect of balconies on ventilation inducing aeromotive force on low-rise buildings

Chand, Ishwar; Bhargava, Pradeep; Krishak, N.L.V.

doi:10.1016/s0360-1323(97)00054-1

Cited by 70 publications

(70 citation statements)

References 4 publications

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“…A balcony can provide various benefits from the aspects of social, economy and environmental, for examples, it provide private outdoor spaces, enhanced the monetary value of a building and provides protection from extreme outdoor climate, respectively [2,3]. There are many studies on the impact of balcony on airflow [3,4,5,6]; however, none of researchers looking into the affect of the provision of balcony on the performance of singlesided ventilation strategy in the context of tall buildings. Since a provision of balconies could change the pressure distribution on the façades of a building [4,6], it is seen as a potential which can be utilized to induce indoor ventilation performance of single-sided ventilated buildings.…”

Section: Balcony As a Passive Design Strategymentioning

confidence: 99%

A Study of Single-Sided Ventilation and Provision of Balconies in the Context of High-Rise Residential Buildings

Mohamed

King

Behnia

et al. 2011

Linköping Electronic Conference Proceedings

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Passive design strategy is an important approach to reduce energy consumption of a building such as improving indoor thermal comfort through enhanced natural ventilation performance. This is crucial in achieving a more sustainable building especially for a tall high density residential development where energy consumption is huge. This paper looks into the potential of high-rise residential buildings to utilize abundant naturally available prevailing wind by mean of passive design strategy. Its objective is to investigate the potential to improve the ventilation performance of a single-sided ventilation strategy of high-rise residential buildings by introducing a series of balconies on their façades. Computational Fluid Dynamics (CFD) was used as a tool for investigation. Since CFD requires a validation process to investigate its reliability, existing wind tunnel experiments and empirical models were used in the validation process. This study found that an appropriate combination of balcony configurations and single-sided ventilation strategy could improve indoor ventilation performance of high-rise residential buildings; however, incorrect combination could further reduce the ventilation performance of an already inefficient ventilation strategy. Therefore, understanding the concept of single-sided ventilation strategy is crucial, and application of appropriate tools such as CFD is important to ensure ventilation performance optimization is achieved.

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Section: Balcony As a Passive Design Strategymentioning

confidence: 99%

A Study of Single-Sided Ventilation and Provision of Balconies in the Context of High-Rise Residential Buildings

Mohamed

King

Behnia

et al. 2011

Linköping Electronic Conference Proceedings

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“…Chan and Chow [19] investigated an ordinary residential flat with a balcony built into the living room and its energy performance utilizing the typical weather data set of Hong Kong, which has a subtropical climate. Chand et al [20] experimentally investigated the influence of balconies on ventilation, which induces the prevailing wind forces. The experimental results showed that provision of balconies changes wind pressure distribution on the windward wall but does not display considerable alteration in it on the leeward side.…”

Section: Introductionmentioning

confidence: 99%

Thermal Behaviour of the Residential Buildings with Cantilever Beam under Winter Day Boundary Conditions

Namli

2017

Hittite J. Sci. Eng.

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In this study, the thermal behaviour of residential buildings with cantilever beam under winter boundary conditions was numerically investigated by means of the open-ended structure approach. For this purpose, parametric studies were carried out for various ratios of cantilever beam depth/cantilever beam height (d/H) and Rayleigh numbers using a computer program for no wind laminar flow conditions. Analyses were conducted for Rayleigh numbers in the range of 10 3 to 10 6 . The calculations were carried out for the ratios of d/H, namely 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0. The working fluid was treated as air (Pr=0.71). According to the findings, the mean Nu number along with the outer vertical wall (surface L) of the residential building, in general, decreases as d/H increases. This decrease in the mean Nu number is evident for Ra≤10 4 , but it appears to be more pronounced after Ra=10 5 . To have minimum heat loss from a residential building under winter day boundary conditions, it is suggested that the ratio of d/H should be between 0.2 and 0.5.

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“…Typical building façades include a venturi-shaped roof [13], wind catchers [9,[14][15][16], a ventilation shaft [17], wing walls [8], a balcony [7,10,11,18], and eaves [5,6,21]. Prajosan and Sharples [17] proposed a ventilation shaft system to increase the indoor air velocity and thermal comfort in a single-sided residential unit.…”

Section: Introductionmentioning

confidence: 99%

“…Chand et al [7] performed wind tunnel experiments to study the effect of balconies on the ventilative force in low-rise buildings without an opening. The balconies altered the wind pressure distribution on windward wall but did not significantly change it on the leeward side.…”

Section: Introductionmentioning

confidence: 99%

“…Many researchers have utilized the aerodynamic potential of building façades to investigate their enhancement effect on indoor and outdoor airflow exchanges for both cross and single-sided ventilation buildings [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. Typical building façades include a venturi-shaped roof [13], wind catchers [9,[14][15][16], a ventilation shaft [17], wing walls [8], a balcony [7,10,11,18], and eaves [5,6,21].…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Single-Sided Ventilation with Overhang in Buildings

2016

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Abstract:Enhancing the ventilation performance of energy-efficient buildings with single-sided openings is important because their ventilation performance is poor and strongly depends on the wind conditions. We considered an overhang as a potential building façade for improving the single-sided ventilation performance. We performed numerical simulations of three-dimensional unsteady turbulent flows over an idealized building with an overhang in order to investigate the effect of the overhang on the ventilation performance. Parametric studies were systematically carried out where the overhang length, wind speed, and wind direction were varied. The numerical results showed that the overhang drastically enhanced the ventilation rate in the windward direction regardless of the wind speed. This is because, for windward cases, the overhang produces a vortex with strong flow separation near the tip of the overhang, which promotes a net airflow exchange at the entrance and increases the ventilation rate. However, the ventilation rates for the leeward and side cases are slightly decreased with the overhang. Using an overhang with single-sided ventilation greatly reduces the local mean age of air (LMA) in the windward direction but increases it in the leeward direction.

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Effect of balconies on ventilation inducing aeromotive force on low-rise buildings

Cited by 70 publications

References 4 publications

A Study of Single-Sided Ventilation and Provision of Balconies in the Context of High-Rise Residential Buildings

A Study of Single-Sided Ventilation and Provision of Balconies in the Context of High-Rise Residential Buildings

Thermal Behaviour of the Residential Buildings with Cantilever Beam under Winter Day Boundary Conditions

Enhanced Single-Sided Ventilation with Overhang in Buildings

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