干旱区生态环境知识资源中心(Arid): Evaluating the effect of trees on UHI mitigation and reduction of energy usage in different built up areas in Cairo

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DOI	10.1016/j.buildenv.2019.106490
	Evaluating the effect of trees on UHI mitigation and reduction of energy usage in different built up areas in Cairo
	Aboelata, Amir; Sodoudi, Sahar
通讯作者	Sodoudi, S
来源期刊	BUILDING AND ENVIRONMENT
ISSN	0360-1323
EISSN	1873-684X
出版年	2020
卷号	168
英文摘要	Cairo experiences higher temperatures than its neighbouring rural and suburban areas. This is due to the lack of vegetation and the wide scale use of sealed surfaces. This phenomenon is known as Urban Heat Island (UHI). This leads to the greater use of air conditioning in indoor spaces during the summer time and the electricity bills are higher. This study seeks to find the best urban vegetation ratio in order to reduce the buildings' energy demand through mitigating UHI and enhancing thermal performance in high and low density built up areas in hot and arid climate. Two areas in Cairo were chosen (Imbaba - 65% urban density, and officers residential in Elsalam district - 23% urban density) with different sky view factor values. The two areas were compared in terms of the cooling effect of 30% trees, 50% trees and 70% grass scenarios using ENVI-met. Then the meteorological outputs for each scenario were used in DesignBuilder in order to calculate the energy consumption. This study shows that, while trees can reduce daily air temperature by 0.2-0.4 K in very high density built up areas, they also increase air temperature by 3 K in low density built up areas due to humidity and evaporation. Therefore, trees are effective at lowering air temperature and reducing energy usage in very high density built up areas, but ineffective in low density built up areas. Furthermore, trees reduce PET in both densities by 1-3 K.
英文关键词	Energy consumption ENVI-Met Thermal performance Urban density Urban heat Island Vegetation
类型	Article
语种	英语
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000532284400005
WOS关键词	URBAN HEAT-ISLAND ; SHADE TREES ; OUTDOOR TEMPERATURE ; HONG-KONG ; STRATEGIES ; IMPACT ; CONFIGURATION ; MICROCLIMATE ; VEGETATION ; TORONTO
WOS类目	Construction & Building Technology ; Engineering, Environmental ; Engineering, Civil
WOS研究方向	Construction & Building Technology ; Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324438
作者单位	[Aboelata, Amir] Tech Univ Berlin, Inst Landscape Architecture & Environm Planning, Str 17 Juni 145, D-10623 Berlin, Germany; [Aboelata, Amir] Cairo Univ, Fac Reg & Urban Planning, Urban Design Dept, Giza, Egypt; [Sodoudi, Sahar] Free Univ Berlin, Inst Meteorol, Carl Heinrich Becker Weg 6-10, D-12165 Berlin, Germany
推荐引用方式 GB/T 7714	Aboelata, Amir,Sodoudi, Sahar. Evaluating the effect of trees on UHI mitigation and reduction of energy usage in different built up areas in Cairo[J],2020,168.
APA	Aboelata, Amir,&Sodoudi, Sahar.(2020).Evaluating the effect of trees on UHI mitigation and reduction of energy usage in different built up areas in Cairo.BUILDING AND ENVIRONMENT,168.
MLA	Aboelata, Amir,et al."Evaluating the effect of trees on UHI mitigation and reduction of energy usage in different built up areas in Cairo".BUILDING AND ENVIRONMENT 168(2020).