Daylight Efficiency development Strategies in The Southern Interior Spaces of Administrative Buildings Case study - Clean water and Sewage building in Dakahlia.(Dept.A)

Noura Hashim,Ahmed El-Maidawy

doi:10.21608/bfemu.2021.164617

Abstract

Daylighting is one of the most important affairs because of its importance in saving energy consumption and visual comforts inside space for occupants. The research aims to study the effect of changing the Window-to-Wall Ratio (WWR), and using horizontal shading devices for the southern spaces of Clean Water and Sewerage building in Dakahlia to improve daylighting performance in the office buildings. This methodology is carried out in four phases: The first phase, study of the current condition of daylighting level in the southern space. The second phase, reducing the number of windows. The third phase, parametric analysis for WWR values. Fourth phase, parametric analysis for horizontal shading devices. The implementation of the simulation process is carried out by using the Grasshopper for Rhino software, which supports simulation parametric model process and the use of Ladybug & Honeybee for Grasshopper tools, which were used to improve daylighting performance in the southern office spaces where daylighting is insufficient. The simulation process performed by using spatial Daylight Autonomy (sDA 300/50%) and Annual Sunlight Exposure (ASE 1000/250) metrics with integration of LEED V4.1 criteria. Results demonstrated that the effect of changing WWR values on daylighting performance inside the space. The research is recommended to using horizontal shading devices as they achieve the required values of sDA and ASE according to LEED V4.1 criteria and achieve glare DGP inside the southern space, so that the occupant does not have to close the windows and rely on artificial lighting and thus increase energy consumption.

Highlights

THE recent escalation of the energy crisis in the Arab Republic of Egypt is an important motive for saving energy consumption and attention to a new and renewable energy, especially in the case of providing the
This study investigate the performance of daylighting for the interior space of southern office in the building of Clean water and Sewage company in Dakahlia and develops proposals to solve the problems of daylighting for southern interior spaces, by using daylight simulation software
The ASE value did not achieve the LEED V4.1 standard, because it is more than 10%, and this indicates that the solar radiation is high inside the southern space

Summary

Introduction

THE recent escalation of the energy crisis in the Arab Republic of Egypt is an important motive for saving energy consumption and attention to a new and renewable energy, especially in the case of providing the Daylighting is one of the main influencing factors in sustainable architecture and improving energy efficiency in buildings in general and administrative buildings in particular. Daylighting will have both economic and environmental benefits [2]. Systems of active and passive that use daylighting and control components are known to reduce lighting energy consumption by up to 65% [9]. This is the aim of the control and shading devices for daylighting. Shading systems play a very important role in building energy requirements and are of critical importance in sustainable architectural design

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Results