Investigating the influence of reflective materials on indoor thermal environment and solar reflectance in buildings
This in-depth study explores the intricate dynamics of reflective materials, emphasizing their impact on the indoor thermal environment and urban heat island (UHI) mitigation. Examining diffuse highly reflective (DHR), general reflective (GR), and retro-reflective (RR) materials on a simplified buil...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-05-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X24003642 |
| _version_ | 1797202109096001536 |
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| author | Jihui Yuan Yasuhiro Shimazaki Masaki Tajima Shaoyu Sheng Zhichao Jiao Marko Bizjak |
| author_facet | Jihui Yuan Yasuhiro Shimazaki Masaki Tajima Shaoyu Sheng Zhichao Jiao Marko Bizjak |
| author_sort | Jihui Yuan |
| collection | DOAJ |
| description | This in-depth study explores the intricate dynamics of reflective materials, emphasizing their impact on the indoor thermal environment and urban heat island (UHI) mitigation. Examining diffuse highly reflective (DHR), general reflective (GR), and retro-reflective (RR) materials on a simplified building model during summer days, the research utilizes outdoor experiments to analyze air and surface temperatures, as well as solar radiation. Prioritizing key metrics—mean radiant temperature (MRT), operative temperature (OT), and solar reflectance (ρ)—the study uncovers nuanced distinctions in DHR, GR, and RR materials. Solar reflectance calculations consistently show higher values for DHR and RR materials compared to GR material, highlighting reflectance's pivotal role in influencing surface temperatures and indoor thermal environment. When evaluating the impact of exterior wall materials on building temperatures, RR material with a 76% reflectance performs similarly to DHR material (82%). Notably, with a 6% lower reflectance in RR, the temperature contrast between external and internal walls is only about 1.5 °C at its maximum, underscoring RR's effectiveness as an outer wall material for UHI mitigation and building energy conservation, surpassing both DHR and GR materials. |
| first_indexed | 2024-04-24T07:58:12Z |
| format | Article |
| id | doaj.art-66303352b489481c94defb186cef6a74 |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-04-24T07:58:12Z |
| publishDate | 2024-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-66303352b489481c94defb186cef6a742024-04-18T04:20:35ZengElsevierCase Studies in Thermal Engineering2214-157X2024-05-0157104333Investigating the influence of reflective materials on indoor thermal environment and solar reflectance in buildingsJihui Yuan0Yasuhiro Shimazaki1Masaki Tajima2Shaoyu Sheng3Zhichao Jiao4Marko Bizjak5Department of Living Environment Design, Grad. School of Human Life and Ecology, Osaka Metropolitan University, Osaka, Japan; Department of Architecture and Civil Eng., Grad. School of Eng., Toyohashi University of Technology, Aichi, Japan; Corresponding author. Department of Living Environment Design, Grad. School of Human Life and Ecology, Osaka Metropolitan University, Osaka, Japan.Department of Architecture and Civil Eng., Grad. School of Eng., Toyohashi University of Technology, Aichi, JapanDepartment of Architecture and Civil Eng., Grad. School of Eng., Toyohashi University of Technology, Aichi, JapanDepartment of Architectural Eng., Graduate School of Eng., Osaka University, JapanDepartment of Housing and Environmental Design, Grad. School of Human Life Science, Osaka City University, Osaka, JapanFaculty of Electrical Engineering and Computer Science, University of Maribor, Koroška Cesta 46, SI 2000, Maribor, SloveniaThis in-depth study explores the intricate dynamics of reflective materials, emphasizing their impact on the indoor thermal environment and urban heat island (UHI) mitigation. Examining diffuse highly reflective (DHR), general reflective (GR), and retro-reflective (RR) materials on a simplified building model during summer days, the research utilizes outdoor experiments to analyze air and surface temperatures, as well as solar radiation. Prioritizing key metrics—mean radiant temperature (MRT), operative temperature (OT), and solar reflectance (ρ)—the study uncovers nuanced distinctions in DHR, GR, and RR materials. Solar reflectance calculations consistently show higher values for DHR and RR materials compared to GR material, highlighting reflectance's pivotal role in influencing surface temperatures and indoor thermal environment. When evaluating the impact of exterior wall materials on building temperatures, RR material with a 76% reflectance performs similarly to DHR material (82%). Notably, with a 6% lower reflectance in RR, the temperature contrast between external and internal walls is only about 1.5 °C at its maximum, underscoring RR's effectiveness as an outer wall material for UHI mitigation and building energy conservation, surpassing both DHR and GR materials.http://www.sciencedirect.com/science/article/pii/S2214157X24003642Urban heat islandReflective materialsIndoor thermal environmentSolar reflectanceSimplified building model |
| spellingShingle | Jihui Yuan Yasuhiro Shimazaki Masaki Tajima Shaoyu Sheng Zhichao Jiao Marko Bizjak Investigating the influence of reflective materials on indoor thermal environment and solar reflectance in buildings Case Studies in Thermal Engineering Urban heat island Reflective materials Indoor thermal environment Solar reflectance Simplified building model |
| title | Investigating the influence of reflective materials on indoor thermal environment and solar reflectance in buildings |
| title_full | Investigating the influence of reflective materials on indoor thermal environment and solar reflectance in buildings |
| title_fullStr | Investigating the influence of reflective materials on indoor thermal environment and solar reflectance in buildings |
| title_full_unstemmed | Investigating the influence of reflective materials on indoor thermal environment and solar reflectance in buildings |
| title_short | Investigating the influence of reflective materials on indoor thermal environment and solar reflectance in buildings |
| title_sort | investigating the influence of reflective materials on indoor thermal environment and solar reflectance in buildings |
| topic | Urban heat island Reflective materials Indoor thermal environment Solar reflectance Simplified building model |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X24003642 |
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