Determination of Climate-Based Daylight Metrics under 15 CIE (International Commission on Illumination) Standard Skies and Three Representative Skies
Daylighting serves as a crucial sustainable strategy in assessing the built environment. Climate-based daylight metrics (CBDMs) have been widely employed to evaluate the dynamic performance of daylight. However, conventional CBDM calculations heavily rely on time-consuming full-scale computer simula...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/13/10/2523 |
| _version_ | 1797574407642677248 |
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| author | Shuyang Li Danny H. W. Li Wenqiang Chen Ernest K. W. Tsang Siwei Lou Zhenyu Wang |
| author_facet | Shuyang Li Danny H. W. Li Wenqiang Chen Ernest K. W. Tsang Siwei Lou Zhenyu Wang |
| author_sort | Shuyang Li |
| collection | DOAJ |
| description | Daylighting serves as a crucial sustainable strategy in assessing the built environment. Climate-based daylight metrics (CBDMs) have been widely employed to evaluate the dynamic performance of daylight. However, conventional CBDM calculations heavily rely on time-consuming full-scale computer simulations. In addition, the CBDMs need representative annual daylight data that are essential for CBDM analysis, and can pose challenges in many locations. Even when suitable daylight data are available, they may not accurately reflect current trends and conditions. This study aims to determine the various CBDMs using both the 15 CIE Standard Skies and the three representative skies specific to Hong Kong. All data were simulated from a software named RADIANCE (version 5.3). The <i>R</i><sup>2</sup><i>s</i> of the CBDMs under both the 15 CIE Standard Skies and the three representative skies were more than 0.89, and the MBEs and RMSEs were not more than 5.4% and 9.1%, respectively, when the outdoor illuminance measured in 2004 was employed. The findings could be adopted for other locations where the required daylight parameters were not systematically recorded. |
| first_indexed | 2024-03-10T21:22:12Z |
| format | Article |
| id | doaj.art-06cf062ee2d6440dad2c62e4db7d3f58 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-10T21:22:12Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-06cf062ee2d6440dad2c62e4db7d3f582023-11-19T15:55:35ZengMDPI AGBuildings2075-53092023-10-011310252310.3390/buildings13102523Determination of Climate-Based Daylight Metrics under 15 CIE (International Commission on Illumination) Standard Skies and Three Representative SkiesShuyang Li0Danny H. W. Li1Wenqiang Chen2Ernest K. W. Tsang3Siwei Lou4Zhenyu Wang5Building Energy Research Group, Department of Architecture and Civil Engineering, City University of Hong Kong, Hong Kong SAR, ChinaBuilding Energy Research Group, Department of Architecture and Civil Engineering, City University of Hong Kong, Hong Kong SAR, ChinaShenzhen Pingshan District Key Area Constructing and Developing Centre, Shenzhen 518000, ChinaSchool of Civil Engineering, Guangzhou University, Guangzhou 511370, ChinaDepartment of Science, Hong Kong Metropolitan University, Hong Kong SAR, ChinaBuilding Energy Research Group, Department of Architecture and Civil Engineering, City University of Hong Kong, Hong Kong SAR, ChinaDaylighting serves as a crucial sustainable strategy in assessing the built environment. Climate-based daylight metrics (CBDMs) have been widely employed to evaluate the dynamic performance of daylight. However, conventional CBDM calculations heavily rely on time-consuming full-scale computer simulations. In addition, the CBDMs need representative annual daylight data that are essential for CBDM analysis, and can pose challenges in many locations. Even when suitable daylight data are available, they may not accurately reflect current trends and conditions. This study aims to determine the various CBDMs using both the 15 CIE Standard Skies and the three representative skies specific to Hong Kong. All data were simulated from a software named RADIANCE (version 5.3). The <i>R</i><sup>2</sup><i>s</i> of the CBDMs under both the 15 CIE Standard Skies and the three representative skies were more than 0.89, and the MBEs and RMSEs were not more than 5.4% and 9.1%, respectively, when the outdoor illuminance measured in 2004 was employed. The findings could be adopted for other locations where the required daylight parameters were not systematically recorded.https://www.mdpi.com/2075-5309/13/10/2523climate-based daylight metricsCIE Standard Skiesrepresentative skiesoutdoor illuminanceRADIANCE |
| spellingShingle | Shuyang Li Danny H. W. Li Wenqiang Chen Ernest K. W. Tsang Siwei Lou Zhenyu Wang Determination of Climate-Based Daylight Metrics under 15 CIE (International Commission on Illumination) Standard Skies and Three Representative Skies Buildings climate-based daylight metrics CIE Standard Skies representative skies outdoor illuminance RADIANCE |
| title | Determination of Climate-Based Daylight Metrics under 15 CIE (International Commission on Illumination) Standard Skies and Three Representative Skies |
| title_full | Determination of Climate-Based Daylight Metrics under 15 CIE (International Commission on Illumination) Standard Skies and Three Representative Skies |
| title_fullStr | Determination of Climate-Based Daylight Metrics under 15 CIE (International Commission on Illumination) Standard Skies and Three Representative Skies |
| title_full_unstemmed | Determination of Climate-Based Daylight Metrics under 15 CIE (International Commission on Illumination) Standard Skies and Three Representative Skies |
| title_short | Determination of Climate-Based Daylight Metrics under 15 CIE (International Commission on Illumination) Standard Skies and Three Representative Skies |
| title_sort | determination of climate based daylight metrics under 15 cie international commission on illumination standard skies and three representative skies |
| topic | climate-based daylight metrics CIE Standard Skies representative skies outdoor illuminance RADIANCE |
| url | https://www.mdpi.com/2075-5309/13/10/2523 |
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