Optimizing daylighting in lecture halls within hot-arid climates through modification of glazing systems with light-shelves: A parametric design approach

IF 3.2 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Indoor and Built Environment Pub Date : 2024-01-15 DOI:10.1177/1420326x241226651

Abdultawab M. Qahtan, A. A. S. Bahdad, Nedhal Al-Tamimi, Sharifah Fairuz Syed Fadzil

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Abstract

This study focused on enhancing the balance between sufficient daylighting and heat mitigation in lecture halls, set within the challenging hot-arid climate of Saudi Arabia, through the optimization of window designs and the incorporation of light-shelves. To achieve this, a combination of in-detail Parametric Sensitivity Analyses (PSA) was performed in the first stage to find the best configuration of windows, while a multi-objective optimization (MOO) strategy was applied in the second stage considering multiple objectives in each stage. Before running both analyses, the simulation model was validated by field measurement. The optimization results show that the optimal window configurations obtained through PSA and MOO offer significant potential for improving daylighting performance, energy efficiency and comfort. In terms of the overall best solutions from PSA and MOO, the PSA demonstrated substantial improvements, with Useful Daylight Illuminance (UDI) rising by 46.31% to 55.36%, glare decreasing by 52.17% to 82.61% and Energy Use Intensity (EUI) improving by 0.89% to 2.63%. Additionally, MOO solutions yielded even more significant enhancements, increasing UDI by 43.58% to 58.37%, reducing glare by 95% to 100% and enhancing EUI by 1.81% to 3.88%. This has resulted in a more evenly distributed and efficient daylighting throughout the space.

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通过改造带采光架的玻璃系统，优化炎热干旱气候条件下报告厅的日光照明：参数化设计方法

这项研究的重点是通过优化窗户设计和安装采光架，在沙特阿拉伯极具挑战性的干旱炎热气候条件下，加强阶梯教室内充足日照和散热之间的平衡。为实现这一目标，在第一阶段结合详细的参数敏感性分析（PSA）来寻找最佳窗户配置，而在第二阶段则采用多目标优化（MOO）策略，在每个阶段考虑多个目标。在进行这两项分析之前，通过现场测量对模拟模型进行了验证。优化结果表明，通过 PSA 和 MOO 获得的最佳窗户配置在改善采光性能、能源效率和舒适度方面具有巨大潜力。从 PSA 和 MOO 的整体最佳解决方案来看，PSA 有着显著的改善，有用日光照度（UDI）提高了 46.31% 至 55.36%，眩光减少了 52.17% 至 82.61%，能源使用强度（EUI）提高了 0.89% 至 2.63%。此外，MOO 解决方案的改进效果更为显著，UDI 提高了 43.58% 至 58.37%，眩光减少了 95% 至 100%，EUI 提高了 1.81% 至 3.88%。这使得整个空间的日照分布更加均匀，效率更高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Indoor and Built Environment 环境科学-工程：环境

CiteScore

6.40

自引率

25.00%

发文量

130

审稿时长

2.6 months

期刊介绍： Indoor and Built Environment publishes reports on any topic pertaining to the quality of the indoor and built environment, and how these might effect the health, performance, efficiency and comfort of persons living or working there. Topics range from urban infrastructure, design of buildings, and materials used to laboratory studies including building airflow simulations and health effects. This journal is a member of the Committee on Publication Ethics (COPE).