The Influence of Urban Geometry on Thermal Comfort and Energy Consumption in Residential Building of Hot Arid Climate, Assiut, Egypt

Abdallah, Amr Sayed Hassan

doi:10.1016/j.proeng.2015.08.1043

Cited by 21 publications

(9 citation statements)

References 4 publications

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“…It has to be noted that curves in Figure 2 report modified PMV values according to Jendritzki and Nubler [46]. Moreover, Abdallah [51] investigated the influence of outer courtyards between buildings using two types of courtyards: (1) shallow canyons with H/W ratio 0.24-0.6 that is located in the urban pattern of youth housing sector in New Assuit city; and (2) deep canyons with H/W ratio of 4 in one of the new residential houses in El-Abrahimia and El-Moalemeen complexes in the center of Assuit city. According to a comparison that was conducted between the two cases based on; the indoor thermal comfort, energy consumption, and IEQ, the study revealed that there was a reduction of the indoor temperature of the spaces that overlooked the deep canyons with a difference of 11 • C from the outdoor temperature, and the indoor temperature reaches the upper limit of 90% acceptable range of ASHRAE.…”

Section: Urban Adaptation and Mitigation Strategies Researchmentioning

confidence: 97%

“…There is a strong relation between the outdoor urban thermal performance and the indoor environmental quality (IEQ), such that IEQ is the result of indoor thermal comfort, indoor air quality (IAQ) acoustic and visual comfort, [49,50]. In a study that took place in the Egyptian environment, urban trees' effects on the occupant thermal comfort has been studied in a residential building [51]. Another study investigated the effect of baseline and two urban cluster form alternatives on the outdoor predicted mean vote (PMV) that was used to quantify thermal comfort, as well as, their effect on a building occupant thermal comfort and its CO2 emissions [46].…”

Section: Connecting Outdoor-indoor Environmentsmentioning

confidence: 99%

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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: Urban Adaptation and Mitigation Strategies Researchmentioning

confidence: 97%

Section: Connecting Outdoor-indoor Environmentsmentioning

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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“…The compound house is a very plain undecorated structure within a dense urban geometry which influences its ambient temperatures [13] by reducing the ventilation outside the compound house [14]. Usually, the building is in the form of a hollow square horseshoe and features a large single courtyard (Scheme 1) and may house between 100-200 residents [15].…”

Section: The Yoruba Compound Housementioning

confidence: 99%

User’s Lifestyle and the Thermal Performance of the Compound House: An Appraisal

Fashuyi¹,

Alfa

2019

Buildings

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This study examines the impact of thermal performance of Yoruba compound house on the user’s lifestyle to cope with discomfort hours. A compound house was simulated using Autodesk Ecotect software. The study found that the front and right sides of the building have the lowest temperatures due to the combined effects of indirect and interzonal heat transfers. The research highlighted that while the user’s lifestyle in the Yoruba compound house relies on the veranda to cope with discomfort hours, residents of multi-dwelling compound houses rely on a lifestyle of housing adjustments. The study concludes that the thermal properties of the Yoruba compound house are complemented by the user’s lifestyle to cope with the discomfort hours.

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“…Better thermal comfort offers livable outdoor activities and better indoor thermal comfort. Studies also reported that indoor thermal comfort is strongly related to mitigation of cooling load (Abdallah, 2015;Chen, Sung, Chang, Chi, 2013;Givoni, 1998). Lundgren & Kjellstrom (2013) justified that every 1ºC outdoor temperature increase requires an 180 MW base electricity load majorly required by air conditioning.…”

Section: Introductionmentioning

confidence: 99%

Solar Radiation and Urban Wind Effect on Urban Canyon in Hot, Humid Regions

Yola¹,

Siong²

2016

E-BPJ

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Urban configuration modification is an efficient approach to mitigating Urban Heat Island effect. This study investigates the significant impact of solar radiation and urban wind on microclimate and thermal comfort in the different setting of urban canyon configuration. The Envi-met (V3.1 beta) simulation presents that East-West canyon direction received the worst level of air temperature and meant radiant temperature compared to when the canyon was directed perpendiculars to the wind direction (South East -North West). The finding scientifically demonstrates that in Kuala Lumpur context, with the slow urban wind speed influences, solar radiation plays the significant impact on the microclimate.

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The Influence of Urban Geometry on Thermal Comfort and Energy Consumption in Residential Building of Hot Arid Climate, Assiut, Egypt

Cited by 21 publications

References 4 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

User’s Lifestyle and the Thermal Performance of the Compound House: An Appraisal

Solar Radiation and Urban Wind Effect on Urban Canyon in Hot, Humid Regions

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