The impact of urban design elements on microclimate in hot arid climatic conditions: Al Ain City, UAE

Hamdan, Dana Mohammad Ahmad; Oliveira, Fabiano Lemes de

doi:10.1016/j.enbuild.2019.07.028

Cited by 41 publications

(21 citation statements)

References 24 publications

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“…And they ignored all the research that called for rationalizing energy consumption or improving the local climate. Furthermore, some essential rules are overlooked, such as: ignoring the orientation of the streets, building ratios, choosing white landscape raw materials, arranging vegetation cover or using different shading applications [11,12], or setting organizing laws that oblige the implementers of buildings to make a cover for buildings so that it is not less than 25 cm or even study the proportions of the window openings or their direction according to the function of the void. This prompted the residents of the buildings to use air conditioning [13] while they were inside to achieve thermal comfort, which led to a substantial increase in the rates of electrical energy consumption and thus carbon dioxide emissions.…”

Section: Introductionmentioning

confidence: 99%

Energy efficiency, carbon emissions, and thermal comfort comparisons between conventional and proposed clustered open courtyard housing using CEB blocks

Fahmy

Mahmoud

Abdel-Khalik

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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This research aims to assess a compact economic housing model design proposal using walls constructed of compressed earth blocks as a nucleus for sustainable urban housing in Egypt. This research also aims to evaluate the effect of the direction of the proposed compact building on the building’s internal thermal comfort, energy consumption, and carbon dioxide emissions. According to previous studies, residential buildings represent about 50% of land uses in Egyptian cities, consume about 19% of the energy produced, and are responsible for 10% of carbon dioxide emissions. All previous environmental studies commended the thermal performance of courtyard buildings in the hot-arid climate of which Egypt is a part. As a result, the authors directed many previous studies towards new housing patterns in Egyptian cities using court-yarded clustered housing to improve thermal performance, decrease energy consumption, and reduce carbon dioxide emissions. This research compares two residential buildings using design-builder simulation. The two buildings have the same housing unit area of 90 m2 to represent the social housing unit area in Egyptian cities. The first comparative building is a conventional residential building surrounded by solar radiation from all sides and uses walls constructed of solid cement bricks (SCB). The second comparative building is a cluster open court-yarded building using walls built of Compressed Earth Blocks (CEB). Results show that both the clustered open courtyard housing model whose main axis is in the (N-S) direction and the use of CEB has improved all of the examined measures.

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Section: Introductionmentioning

confidence: 99%

Energy efficiency, carbon emissions, and thermal comfort comparisons between conventional and proposed clustered open courtyard housing using CEB blocks

Fahmy

Mahmoud

Abdel-Khalik

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…Al Ain is noted for its infrastructure, which is a mix of contemporary and traditional. In contrast to the abundant towering skyscraper typology in Abu Dhabi and Dubai, Al Ain has instituted a policy of allowable maximum building height of four stories including the ground level, which was established by the country's founder, Sheik Zayed, to preserve the city's cultural quality [4]. When it comes to traffic patterns, Al Ain has a system of roundabouts that are now being converted into traffic signals.…”

Section: Introductionmentioning

confidence: 99%

Residential Neighborhood Assessment in the City of Al Ain, United Arab Emirates, and the Impact on Climate Change (Heat Island Effect Analysis)

Bande

MOHAMED

ASMELASH

et al. 2022

WIT Transactions on the Built Environment

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Al Ain is an important city that has gone through major urban transformation over the last 50 years. These changes impact the development of neighborhoods, especially residential neighborhoods. The morphology of the urban blocks also impacted the heat island effect (UHI). UHI is one of the contributors to climate change. Therefore, having sustainable neighborhoods' means reducing the UHI and making cities more livable. The methodology to be followed in this study is as residential blocks in Al Ain for analysis of current conditions and proposal for UHI reduction through different strategies, modelling and simulations to create and analyze the models in Rhino Grasshopper and discussing the findings and results. The aim is to divide the work for the two cities and then analyze the current conditions of the neighborhoods. Based on the findings, different strategies can be applied in the residential blocks to reduce the surface temperature of the streets and buildings, therefore reducing the UHI effect. Having sustainable neighborhoods has a direct impact in making cities more livable and improving the climate change. The main tools to be used are Rhino/Grasshopper. Through advanced software, the findings can be optimized and contribute to more sustainable neighborhoods.

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“…Landscape design can significantly improve the microclimate and enhance human comfort in outdoor areas, mitigating the UHI effect (Ignatius et al, 2015;Mohammad et al, 2021;Xu et al, 2017) , and resulting in a decrease in the demand for cooling of buildings (Akbari et al, 1992;Hamdan & Oliveira, 2019;Kolokotroni et al, 2007;Xu et al, 2017). A few studies have investigated the cooling impact of trees and vegetation on outdoor Ta due to the evaporation ability and shading effects of vegetation.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Design Combinations of Surface Materials and Plants on Outdoor Thermal Conditions during Summer around a Single-Detached House: a Numerical Analysis

Leetongin¹,

Inprom²,

Srivanit³

et al. 2022

NJEDP

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Suburban areas with low-density buildings are subject to only limited shading from adjacent buildings. As a result, these areas have more surface area absorbing more radiation, which has the effect of increasing urban temperatures compared with built-up high-density areas. This study aims to assess the combinations of landscape design, namely the integration of wall-paint colors, used to influence the outdoor thermal conditions around a single house in a housing cluster in suburban Bangkok, Thailand. The investigation used the ENVI-met model to perform diurnal profiles of the air temperature (Ta), relative humidity (RH), direct and diffuse solar radiation, and wind speed (WS) in summer. The results show that only a single design element adversely affected the cooling effect, while other combinations of landscape design significantly improved outdoor thermal conditions. It was found that a combination of light wall-paint colors and trees planted near the house provided the maximum reduction in Ta of 0.7°C (1.6% from the base case), and a 2.7% reduction in the noon solar radiation. High-reflectance wall-paint was found to have a secondary influence of up to 0.2°C on the Ta, while the temperature reductions from changing the ground-cover materials had only a slight impact. Finally, landscape designs integrating wall-paint colors to promote a cooler outdoor environment are proposed.

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The impact of urban design elements on microclimate in hot arid climatic conditions: Al Ain City, UAE

Cited by 41 publications

References 24 publications

Energy efficiency, carbon emissions, and thermal comfort comparisons between conventional and proposed clustered open courtyard housing using CEB blocks

Energy efficiency, carbon emissions, and thermal comfort comparisons between conventional and proposed clustered open courtyard housing using CEB blocks

Residential Neighborhood Assessment in the City of Al Ain, United Arab Emirates, and the Impact on Climate Change (Heat Island Effect Analysis)

The Effects of Design Combinations of Surface Materials and Plants on Outdoor Thermal Conditions during Summer around a Single-Detached House: a Numerical Analysis

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