Influence of permeability ratio on wind-driven ventilation and cooling load of mid-rise buildings

Saadatjoo, Paria; Mahdavinejad, Mohammadjavad; Zhang, G.; Vali, Kianoush

doi:10.1016/j.scs.2021.102894

Cited by 10 publications

(7 citation statements)

References 67 publications

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“…Our findings are consistent with prior studies that have reported the presence of building facade geometrical details such as balconies may introduce a high level of complexity in the airflow ( Montazeri & Blocken, 2013 ; Kahsay et al., 2019 ; Zheng et al., 2020 ). Although our results challenge the conclusions of some investigations claiming that balconies are ineffective for natural ventilation ( Mohammadi et al., 2010 ), and may even reduce the effectiveness of indoor airflow in single-sided naturally ventilated apartment buildings ( Mohamedi et al., 2009 ), or double-sided ventilated buildings ( Omrani et al., 2017 ), they are consistent with previous studies that have demonstrated the contribution of semi-outdoor spaces and balconies to indoor ventilation ( Saadatjoo et al., 2021 ; Saadatjoo et al., 2021 ; Gamero-Salinas et al., 2022 ; Muhsin et al., 2017 ). While our results are consistent with these studies, we also observed some different patterns in terrace velocity, possibly due to building typology and terrace location.…”

Section: Discussionsupporting

confidence: 91%

“…(2014) presented porosity as an efficient solution to improve natural ventilation potential and reduce cooling energy demand for new buildings in dense cities ( Konidari & Fedeski, 2014 ). Saadatjoo and colleagues studied terraced buildings with different porosity ratios (20% to 50%) and demonstrated that increasing the number of terraces and porosity ratio has an impact on NVP ( Saadatjoo et al., 2021 ). In another study, the cases with terrace depth of 1.2 m showed better natural ventilation performance compared to terraces with depth of 1.5 and 1.8 meters ( Saadatjoo et al., 2018 ).…”

Section: Literature Reviewmentioning

confidence: 99%

See 1 more Smart Citation

Towards the new generation of courtyard buildings as a healthy living concept for post-pandemic era

Saadatjoo

Badamchizadeh

Mahdavinejad

2023

Sustainable Cities and Society

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Section: Discussionsupporting

confidence: 91%

Section: Literature Reviewmentioning

confidence: 99%

Towards the new generation of courtyard buildings as a healthy living concept for post-pandemic era

Saadatjoo

Badamchizadeh

Mahdavinejad

2023

Sustainable Cities and Society

Self Cite

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“…On average we find that every month of full lockdown reduced the demand by 20% on average, or over 1.5% on an annual basis [5]. Therefore, focusing on methods to optimize the energy efficiency and promoting sustainability in the building's component while considering the quality of indoor spaces has been one of the trend topics among researchers [6][7][8][9][10][11][12][13]. In Iran, artificial lighting is reported to contribute up to 25% of electricity consumption in office buildings [14].…”

Section: Introductionmentioning

confidence: 99%

Efficient Shading Device as an Important Part of Daylightophil Architecture; a Designerly Framework of High-Performance Architecture for an Office Building in Tehran

et al. 2021

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(1) Background: considering multiple, and somehow conflicting, design objectives can potentially make achieving a high-performance design a complex task to perform. For instance, shading devices can dramatically affect the building performance in various ways, such as energy consumption and daylight. This paper introduces a novel procedure for designing shading devices as an integral part of daylightophil architecture for office buildings by considering daylight and energy performance as objectives to be optimal. (2) Methods: to address the topic, a three-step research method was used. Firstly, three different window shades (fixed and dynamic) were modeled, one of which was inspired by traditional Iranian structures, as the main options for evaluation. Secondly, each option was evaluated for energy performance and daylight-related variables in critical days throughout the year in terms of climatic conditions and daylight situations (equinoxes and solstices including 20 March, 21 June, 22 September, and 21 December). Finally, to achieve a reliable result, apart from the results of the comparison of three options, all possible options for fixed and dynamic shades were analyzed through a multi-objective optimization to compare fixed and dynamic options and to find the optimal condition for dynamic options at different times of the day. (3) Results: through different stages of analysis, the findings suggest that, firstly, dynamic shading devices are more efficient than fixed shading devices in terms of energy efficiency, occupants’ visual comfort, and efficient use of daylight (roughly 10%). Moreover, through analyzing dynamic shading devices in different seasons and different times of the year, the optimal form of this shading device was determined. The results indicate that considering proper shading devices can have a significant improvement on achieving high-performance architecture in office buildings. This implies good potential for daylightophil architecture, but would require further studies to be confirmed as a principle for designing office buildings.

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“…Several mental and physical problems have become more prominent because of insufficient passive ventilation, natural daylight, and lack of green space in and around traditional high-rise residential buildings (Saadatjoo et al, 2023). In response, Prof. Manoj Mathur, Professor at the School of Planning and Architecture, New Delhi, stated the following:Design guidelines have been introduced to create healthy homes and sanitary conditions.…”

Section: Methodsmentioning

confidence: 99%

Healthy Buildings, a Webinar Report

Boby,

Cambra-Rufino,

Sugga

et al. 2024

HERD

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The need for a change in the built environment was stressed by the threat of the COVID-19 pandemic coupled with the effects of climate change (Emmanuel et al., 2020;Priyadarsini et al., 2020). According to EPA (2021), humans spend approximately 90% of their time indoors, and spatial qualities can affect physical and mental wellbeing. Therefore, health-related decisions are made in architectural, spatial, internal facilities, premise plumbing systems, and heating, ventilating, and air-conditioning design (Salonen et al., 2023). Hence, today it is common to speak about "healthy buildings," defined as "built structures that promote the positive well-being of individuals" (Awada et al., 2021).Despite the rapid need for architectural solutions during the pandemic, there was not much time for the valuable exchange of knowledge or validation from experts in various countries on this issue. However, architects are expected to implement design solutions for issues highlighted during the COVID-19 pandemic that could not be addressed at that time (Emmanuel et al., 2020).Hence, the aim of this report is to summarize the key findings from the webinar on healthy buildings, which tackles design aspects driven by the COVID-19 pandemic, which are applicable to healthcare, educational, and commercial buildings in order to reach a larger audience who could benefit from them. The WebinarOn November 30, 2022, the School of Planning and Architecture, New Delhi, organized a webinar to offer the students and faculty an opportunity to comprehend the latest design solutions to incorporate into their buildings for well-being. This webinar consisted of nine plenary sessions and a focus group.

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Influence of permeability ratio on wind-driven ventilation and cooling load of mid-rise buildings

Cited by 10 publications

References 67 publications

Towards the new generation of courtyard buildings as a healthy living concept for post-pandemic era

Towards the new generation of courtyard buildings as a healthy living concept for post-pandemic era

Efficient Shading Device as an Important Part of Daylightophil Architecture; a Designerly Framework of High-Performance Architecture for an Office Building in Tehran

Healthy Buildings, a Webinar Report

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