Enhancing Daylight and Energy Efficiency in Hot Climate Regions with a Perforated Shading System Using a Hybrid Approach Considering Different Case Studies
Direct sunlight causes glare and reduces indoor daylight quality, making shading systems essential. This study proposes and validates a perforated shading screen (PSS) to enhance daylighting and energy efficiency. A hybrid approach integrating parametric modeling, machine learning, multi-criteria de...
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MDPI AG
2025-03-01
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| author | Basma Gaber Changhong Zhan Xueying Han Mohamed Omar Guanghao Li |
| author_facet | Basma Gaber Changhong Zhan Xueying Han Mohamed Omar Guanghao Li |
| author_sort | Basma Gaber |
| collection | DOAJ |
| description | Direct sunlight causes glare and reduces indoor daylight quality, making shading systems essential. This study proposes and validates a perforated shading screen (PSS) to enhance daylighting and energy efficiency. A hybrid approach integrating parametric modeling, machine learning, multi-criteria decision-making (MCDM), and genetic algorithm (GA) is used to optimize the design incorporating architects’ preferences. The Analytic Network Process (ANP) is used to assign weights to performance metrics while accounting for interdependencies. The study evaluates PSS performance in three hot climate regions—Cairo, Riyadh, and Kuching—on both south and west elevations, comparing it to traditional fins. Results show that PSS consistently outperforms fins, significantly improving daylight and energy performance. The Useful Daylight Illuminance (UDI) increased by up to 105.32%, Continuous Daylight Autonomy (CDA) by up to 11.87%, while Annual Solar Exposure (ASE), Solar Gain (SG), and Energy Use Intensity (EUI) were reduced by up to 100%, 88.07%, and 45.2%, respectively. To validate the findings, the optimal PSS design from a selected case study was 3D-printed and experimentally tested. Results confirmed enhanced daylight distribution and reduced glare, improving occupant comfort. The proposed PSS offers an effective shading solution adaptable to various climates, balancing daylighting needs and energy efficiency. |
| format | Article |
| id | doaj-art-bee354983e3c4fed89316f24914caffd |
| institution | OA Journals |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
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| series | Buildings |
| spelling | doaj-art-bee354983e3c4fed89316f24914caffd2025-08-20T02:11:12ZengMDPI AGBuildings2075-53092025-03-0115698810.3390/buildings15060988Enhancing Daylight and Energy Efficiency in Hot Climate Regions with a Perforated Shading System Using a Hybrid Approach Considering Different Case StudiesBasma Gaber0Changhong Zhan1Xueying Han2Mohamed Omar3Guanghao Li4Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, School of Architecture and Design, Harbin Institute of Technology, Ministry of Industry and Information Technology, Harbin 150001, ChinaKey Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, School of Architecture and Design, Harbin Institute of Technology, Ministry of Industry and Information Technology, Harbin 150001, ChinaKey Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, School of Architecture and Design, Harbin Institute of Technology, Ministry of Industry and Information Technology, Harbin 150001, ChinaState Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Architecture and Planning, Shenyang Jianzhu University, Shenyang 110168, ChinaDirect sunlight causes glare and reduces indoor daylight quality, making shading systems essential. This study proposes and validates a perforated shading screen (PSS) to enhance daylighting and energy efficiency. A hybrid approach integrating parametric modeling, machine learning, multi-criteria decision-making (MCDM), and genetic algorithm (GA) is used to optimize the design incorporating architects’ preferences. The Analytic Network Process (ANP) is used to assign weights to performance metrics while accounting for interdependencies. The study evaluates PSS performance in three hot climate regions—Cairo, Riyadh, and Kuching—on both south and west elevations, comparing it to traditional fins. Results show that PSS consistently outperforms fins, significantly improving daylight and energy performance. The Useful Daylight Illuminance (UDI) increased by up to 105.32%, Continuous Daylight Autonomy (CDA) by up to 11.87%, while Annual Solar Exposure (ASE), Solar Gain (SG), and Energy Use Intensity (EUI) were reduced by up to 100%, 88.07%, and 45.2%, respectively. To validate the findings, the optimal PSS design from a selected case study was 3D-printed and experimentally tested. Results confirmed enhanced daylight distribution and reduced glare, improving occupant comfort. The proposed PSS offers an effective shading solution adaptable to various climates, balancing daylighting needs and energy efficiency.https://www.mdpi.com/2075-5309/15/6/988perforated shading screensmulti-objective optimizationMCDMshading systemshot climatesdaylight performance |
| spellingShingle | Basma Gaber Changhong Zhan Xueying Han Mohamed Omar Guanghao Li Enhancing Daylight and Energy Efficiency in Hot Climate Regions with a Perforated Shading System Using a Hybrid Approach Considering Different Case Studies Buildings perforated shading screens multi-objective optimization MCDM shading systems hot climates daylight performance |
| title | Enhancing Daylight and Energy Efficiency in Hot Climate Regions with a Perforated Shading System Using a Hybrid Approach Considering Different Case Studies |
| title_full | Enhancing Daylight and Energy Efficiency in Hot Climate Regions with a Perforated Shading System Using a Hybrid Approach Considering Different Case Studies |
| title_fullStr | Enhancing Daylight and Energy Efficiency in Hot Climate Regions with a Perforated Shading System Using a Hybrid Approach Considering Different Case Studies |
| title_full_unstemmed | Enhancing Daylight and Energy Efficiency in Hot Climate Regions with a Perforated Shading System Using a Hybrid Approach Considering Different Case Studies |
| title_short | Enhancing Daylight and Energy Efficiency in Hot Climate Regions with a Perforated Shading System Using a Hybrid Approach Considering Different Case Studies |
| title_sort | enhancing daylight and energy efficiency in hot climate regions with a perforated shading system using a hybrid approach considering different case studies |
| topic | perforated shading screens multi-objective optimization MCDM shading systems hot climates daylight performance |
| url | https://www.mdpi.com/2075-5309/15/6/988 |
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