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DOI	10.1016/j.jobe.2015.07.007
	A parametric approach for achieving optimum daylighting performance through solar screens in desert climates
	Wagdy, Ayman; Fathy, Fatma
通讯作者	Wagdy, A
来源期刊	JOURNAL OF BUILDING ENGINEERING
ISSN	2352-7102
出版年	2015
卷号	3 页码:155-170
英文摘要	Daylighting provision gives a significant contribution to the enhancement of the indoor environment. However, in desert climates spaces are exposed to direct solar radiation, leading to a non-uniform daylight distribution and excessive heat gain. The literature proves that the use of a shading device may solve these problems. In this daylighting study, a parametric approach was implemented where all combinations of five screen parameters (window to wall ratio, louvers count, louvers tilt angle, screen depth ratio, and screen reflectivity) were computed. This generated 1600 different screen configurations based on the predefined range of each parameter. Two consecutive phases were performed in which the Illuminating Engineering Society (IES) metrics, Spatial Daylight Autonomy (5DA300/50%), Annual Sunlight Exposure (ASEleoelzse Daylight Availability as well as Annual Daylight Glare Probability (DGP), were examined. Diva-for-Rhino plug-in for Rhinoceros was used to interface Radiance and Daysim while Grasshopper plug-in for Rhinoceros was used to generate 1600 solar screen's configurations parametrically and to automate the simulation process. The simulated case study was a generic south-oriented classroom located in Cairo' desert in Egypt. A parallel computing procedure, by which multiple Radiance simulations can be run, was used to find optimal solutions. These solutions were characterized by maximum daylit area without excessive solar penetration. The general tendency of each parameter and the interaction between them was examined. Simulation results demonstrated the trend of converging solutions starting from 1:1 depth ratio with downward tilted angles. Finally, the influence of increasing screen reflectivity in enhancing daylighting performance was illustrated. Crown Copyright (C) 2015 Published by Elsevier Ltd. All rights reserved.
英文关键词	Daylighting Solar screen Parametric analysis Classroom
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000218488600015
WOS类目	Construction & Building Technology ; 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/2XILL650/331082
作者单位	[Wagdy, Ayman] Amer Univ Cairo, Dept Construct & Architectural Engn, Cairo, Egypt; [Fathy, Fatma] Ain Shams Univ, Fac Engn, Architecture Dept, Cairo, Egypt
推荐引用方式 GB/T 7714	Wagdy, Ayman,Fathy, Fatma. A parametric approach for achieving optimum daylighting performance through solar screens in desert climates[J],2015,3:155-170.
APA	Wagdy, Ayman,&Fathy, Fatma.(2015).A parametric approach for achieving optimum daylighting performance through solar screens in desert climates.JOURNAL OF BUILDING ENGINEERING,3,155-170.
MLA	Wagdy, Ayman,et al."A parametric approach for achieving optimum daylighting performance through solar screens in desert climates".JOURNAL OF BUILDING ENGINEERING 3(2015):155-170.