Impact of evolving building morphology on microclimate in a hot arid climate

Galal, O; Mahmoud, Hatem; Sailor, David J.

doi:10.1016/j.scs.2019.102011

Cited by 28 publications

(11 citation statements)

References 27 publications

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“…The lack in the urban microclimate studies in the Egyptian context dedicated to physically designing urban forms especially concerning half of the land use budget, residential buildings, directed the authors of the aforementioned reference towards defining the corresponding thermal performance and in turn estimating the pedestrian thermal comfort, energy efficiency and the negative effects of those different patterns in later studies [8]. Since then, many other investigations have been dedicated to design residential neighborhoods on a climate responsive basis [9]. In this concern, achieving thermal comfort as a cumulative parameter that represent a good design of urban form, is very difficult to be conducted passively, especially during summer when it is very warm [10] despite that, an enhancement in thermal comfort is possible through interventions in the design of urban buildings.…”

Section: Introductionmentioning

confidence: 99%

A Review and Insights for Eleven Years of Urban Microclimate Research Towards a New Egyptian ERA of Low Carbon, Comfortable and Energy-Efficient Housing Typologies

et al. 2020

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Since the mid-1970s, urban development in Egypt has sprawled far from the distinguished compact arid built environment, as the court-yarded housing typologies that completed the vernacular picture of desert architecture have been discarded in the early 20th century. This has motivated urban microclimate research in Egypt. The main objective was initially to improve outdoor thermal comfort. Therefore, Egyptian research started with assessing different existing patterns for the sake of climate responsive and sustainable urban design practice characterized with low carbon, thermal comfort and energy efficiency in such a hot arid conditions. That is why the review workflow of this article has followed a design progress workflow that led to solving design complexities with regard to generating housing urban forms on a microclimate basis rather than an article regular review workflow in order to extract the research gaps and conclude insights. After discussing a general framework for generating housing sustainable design identified from the concluded gaps, the main conclusion is a vision and a call to integrate the Urban microclimate-Building passiveness-Renewables design dimensions, UBR, towards the evolution of a new era of energy efficient housing typologies and a 5th generation of Egyptian sustainable cities where the 1st generation of new Egyptian cities started 1970s.

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Section: Introductionmentioning

confidence: 99%

A Review and Insights for Eleven Years of Urban Microclimate Research Towards a New Egyptian ERA of Low Carbon, Comfortable and Energy-Efficient Housing Typologies

et al. 2020

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“…Srivanit took a townhouse in the suburbs of Bangkok, Thailand, as an example, combined with street design, and proposed a tree-planting model to alleviate the UHI effect [67]. It can be seen that the morphological elements affecting thermal comfort in the past five years are still urban geometric structure and morphology [14], block morphology, building morphology [68], and greening [69]. At the same time, water bodies are included among urban geometric forms when carrying out research [65,[70][71][72], reflecting the further attention to natural large cooling sources in cities.…”

Section: Group 2: Elements Of Urban Formmentioning

confidence: 99%

Knowledge Map of Urban Morphology and Thermal Comfort: A Bibliometric Analysis Based on CiteSpace

2021

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In the context of global climate change, urban morphology is closely related to thermal comfort and contributes to sustainable urban development. Academics started to pay attention to related topics and carried out many studies during the last decades. This paper aims to summarize the research achievements and the development track for future studies. The Web of Science database and CiteSpace were used in this paper to conduct a bibliometric analysis of 556 studies in related fields from 1993 to 2020. Using a three-level co-occurrence analysis of 446 keywords, 1187 cocited literature clusters, and 15 landmark studies, the research topics and mainstream research frameworks were identified. The results show that with the increasing participation of disciplines such as computer science, ecology, and chemistry, the purpose of future research will shift to a focus on anthropogenic heat emissions, energy consumption, air pollution, and other aspects, and new research tools will be needed. In addition to building-scale and block-scale morphology, urban-scale morphology and green infrastructure will become the focus in the future. This study provides a systematic review of research about urban morphology and thermal comfort, which can inspire other researchers and policy makers.

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“…The measure campaign was conducted as a part of a research project in multiple sites in New Aswan city. The surveyed sites were in Aswan University new campus [15], and in a social residential quarter [62]. Regarding this study, the measure campaign conducted in the Aswan University new campus was used.…”

Section: Meteorological Datamentioning

confidence: 99%

“…Although the climate has a major impact on outdoor and indoor thermal performance, most Egyptian research studies on climate change are still limited to agriculture, biodiversity, and conservation strategies for historical buildings and heritage sites, particularly in coastal cities such as Alexandria [14]. A few studies have addressed the impact of urban form on thermal conditions in outdoor spaces [15][16][17][18]. All these studies investigated both the impact of urban form on the outdoor spaces and energy-saving buildings.…”

Section: Introductionmentioning

confidence: 99%

Urban Geometry Optimization to Mitigate Climate Change: Towards Energy-Efficient Buildings

Mahmoud

Ragab

2020

Sustainability

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The density of building blocks and insufficient greenery in cities tend to contribute dramatically not only to increased heat stress in the built environment but also to higher energy demand for cooling. Urban planners should, therefore, be conscious of their responsibility to reduce energy usage of buildings along with improving outdoor thermal efficiency. This study examines the impact of numerous proposed urban geometry cases on the thermal efficiency of outer spaces as well as the energy consumption of adjacent buildings under various climate change scenarios as representative concentration pathways (RCP) 4.5 and 8.5 climate projections for New Aswan city in 2035. The investigation was performed at one of the most underutilized outdoor spaces on the new campus of Aswan University in New Aswan city. The potential reduction of heat stress was investigated so as to improve the thermal comfort of the investigated outdoor spaces, as well as energy savings based on the proposed strategies. Accordingly, the most appropriate scenario to be adopted to cope with the inevitable climate change was identified. The proposed scenarios were divided into four categories of parameters. In the first category, shelters partially (25–50% and 75%) covering the streets were used. The second category proposed dividing the space parallel or perpendicular to the existing buildings. The third category was a hybrid scenario of the first and second categories. In the fourth category, a green cover of grass was added. A coupling evaluation was applied utilizing ENVI-met v4.2 and Design-Builder v4.5 to measure and improve the thermal efficiency of the outdoor space and reduce the cooling energy. The results demonstrated that it is better to cover outdoor spaces with 50% of the overall area than transform outdoor spaces into canyons.

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Impact of evolving building morphology on microclimate in a hot arid climate

Cited by 28 publications

References 27 publications

A Review and Insights for Eleven Years of Urban Microclimate Research Towards a New Egyptian ERA of Low Carbon, Comfortable and Energy-Efficient Housing Typologies

A Review and Insights for Eleven Years of Urban Microclimate Research Towards a New Egyptian ERA of Low Carbon, Comfortable and Energy-Efficient Housing Typologies

Knowledge Map of Urban Morphology and Thermal Comfort: A Bibliometric Analysis Based on CiteSpace

Urban Geometry Optimization to Mitigate Climate Change: Towards Energy-Efficient Buildings

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