Improvement of thermal performance and predicted mean vote in city districts: A case in the United Arab Emirates

Salameh, Muna; Mushtaha, Emad; Khazindar, Ayat El

doi:10.1016/j.asej.2022.101999

Cited by 8 publications

(2 citation statements)

References 33 publications

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“…While some mosses absorb water through rhizomes, most absorb water through their entire plant surface (Song et al, 2016). The amount of water that bryophytes can absorb varies greatly depending on the type, but it is generally known that they can absorb 50 -2,000% of their dry weight in water (Salameh et al, 2023). Moss dried by sunlight on a clear day has a moisture level of about 5% and can survive in a dry state at temperatures as low as -196°C and as high as 100°C for a certain period (Staunch et al, 2012;Rousk et al, 2014).…”

Section: Environmental Characteristics Of Grass and Mossmentioning

confidence: 99%

Enhancing Urban Sustainability through Green Roofs: A Thermal Performance Evaluation in Dubai

Jung,

Awad,

Ismail

et al. 2023

Future Cities and Environment

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The Dubai Municipality has launched the 'Green Roofs Awareness Initiative' to achieve a green area per capita of 23.4 m 2 in the city. Given the numerous symptoms caused by the unprecedented urban expansion, green roofs and facades can provide various benefits to the city. This study intends to develop an evaluation method for the performance of green roofs (artificial ground reforestation) by quantifying the thermal environment functionality of a low-maintenance lightweight green roof. As a methodology, this study analyzed the change in the thermal environment of the surface, including sensible heat and latent heat, using four types of plants, namely Polytrichum Commune (PC), Thuidium Kanedae (TK), Anomobryum Filiforme (AF), and Kentucky Bluegrass (KB). The results showed that PC reduced the ground surface temperature by 2.58°C to 3.81°C while planting PC increased relative humidity (RH) from 48.0% to 93.3%. KB had the highest effect on humidity control, resulting in a 49.31% increase in RH. Regarding the temperature change by ground surface type, the surface temperature was 0.4 ~ 0.9°C lower for PC, AF, and TK at 18 ~ 24°C, while KB showed a 0.5 ± 0.2°C lower than the set temperature. KB did not show any significant change in temperature up to 24°C, but as the set temperature increased from 30 to 36°C, the surface temperature decreased remarkably. This research provides primary data that will serve to raise awareness, reduce installation costs, and systemize government support for green roofs in Dubai.

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Section: Environmental Characteristics Of Grass and Mossmentioning

confidence: 99%

Enhancing Urban Sustainability through Green Roofs: A Thermal Performance Evaluation in Dubai

Jung,

Awad,

Ismail

et al. 2023

Future Cities and Environment

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“…FIGURE 4Validation information(Salameh, Mushtaha, and El Khazindar, 2022), (A) The four points of field measurements, (B) The Extech meter, (C) The ENVImet simulation results at 2:00 pm, (D) Correlation between the measured the simulated air temperature, (E) RMSE for the actual and predicted values.…”

mentioning

confidence: 99%

The effect of building height on thermal properties and comfort of a housing project in the hot arid climate of the UAE

Salameh

Khazindar

Touqan

2023

Front. Built Environ.

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A city’s microclimate is greatly impacted by urbanization. The ratio of building height to street width affects the thermal properties of urban canyons. This characteristic is one of the main elements that control the thermal radiation emitted and how much solar radiation is absorbed, causing the urban air temperature to be much greater than in rural areas (urban heat island effect). The main aim of this study is to examine the thermal effect of the variations in the height of housing buildings on the urban layout and canyons in the hot arid climate of the UAE. The study used a qualitative method based on ENVI-met software and a case study of an existing housing project to investigate the current situation and the future thermal conditions of proposed configurations. The study investigated two groups of configurations with unified and diverse heights. The results of the study found that the best case among the first group of configurations with unified heights was U3, which had unified mass heights reaching 20 m height, the highest H/W ratio, and the lowest sky view factor; it recorded 0.5°C reduction in the 2:00 p.m. air temperature compared to the base case. The results also revealed that in the case of diverse heights, it is better to locate the highest masses in the hot wind direction. The D2, with highest masses of 20 m height that were located only on the north and west sides of the area blocking the hot north-west prevailing wind, recorded a reduction about 0.9°C compared to the base case. Moreover, in the cases with lower air temperature, U3 and D2 recorded the best predicted mean vote readings, especially in the daytime, when the air temperature is highest.

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Impact of land surface temperature variability and population growth on ecosystem services in the central districts of Antalya

Tülek,

Seçkin Gündoğan

2024

Ain Shams Engineering Journal

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Improvement of thermal performance and predicted mean vote in city districts: A case in the United Arab Emirates

Cited by 8 publications

References 33 publications

Enhancing Urban Sustainability through Green Roofs: A Thermal Performance Evaluation in Dubai

Enhancing Urban Sustainability through Green Roofs: A Thermal Performance Evaluation in Dubai

The effect of building height on thermal properties and comfort of a housing project in the hot arid climate of the UAE

Impact of land surface temperature variability and population growth on ecosystem services in the central districts of Antalya

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