Optimal Design Method for Surface Shape of Exterior Material to Improve Thermal Environment in Streets
Retro-reflective materials have garnered attention as a countermeasure against heat island phenomena. However, the existing materials are inadequate for improving the thermal environment of outdoor spaces because these have been developed for traffic signs. Hence, in this study, an optimal design me...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2023-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/33/e3sconf_iaqvec2023_05004.pdf |
| _version_ | 1797799725142900736 |
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| author | Futaoka Kako Yoshida Shinji |
| author_facet | Futaoka Kako Yoshida Shinji |
| author_sort | Futaoka Kako |
| collection | DOAJ |
| description | Retro-reflective materials have garnered attention as a countermeasure against heat island phenomena. However, the existing materials are inadequate for improving the thermal environment of outdoor spaces because these have been developed for traffic signs. Hence, in this study, an optimal design method for near-infrared rays retro-reflective materials to be installed on the exterior surfaces of buildings is proposed. It consists of a multi-objective genetic algorithm (MOGA) coupled with numerical analysis based on a ray tracing method. First, the outline of the method is shown. Next, the investigation of optimized surface shapes is presented. The results show that in individuals with high summer reflective performance, most of solar radiation hits a surface element only once and reflects upward in summer. In the investigation, the elevation angles of surface elements were approximately 70° and 60° for the installations in the south and west, respectively. It is predicted that the normal of the surface element where solar radiation reaches first is one of the determinants of the summer reflective performance. In addition, the effect of installation city or direction on the optimal design is analyzed. The results show that the direction does not significantly affect, the city suggests to affect the optimal design. |
| first_indexed | 2024-03-13T04:24:15Z |
| format | Article |
| id | doaj.art-d57132268f8b4bbdb05bb37d03a0b08b |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-03-13T04:24:15Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-d57132268f8b4bbdb05bb37d03a0b08b2023-06-20T09:03:56ZengEDP SciencesE3S Web of Conferences2267-12422023-01-013960500410.1051/e3sconf/202339605004e3sconf_iaqvec2023_05004Optimal Design Method for Surface Shape of Exterior Material to Improve Thermal Environment in StreetsFutaoka Kako0Yoshida Shinji1Fujita Corporation, SendagayaNara Women’s University, Faculty of Human Life and EnvironmentRetro-reflective materials have garnered attention as a countermeasure against heat island phenomena. However, the existing materials are inadequate for improving the thermal environment of outdoor spaces because these have been developed for traffic signs. Hence, in this study, an optimal design method for near-infrared rays retro-reflective materials to be installed on the exterior surfaces of buildings is proposed. It consists of a multi-objective genetic algorithm (MOGA) coupled with numerical analysis based on a ray tracing method. First, the outline of the method is shown. Next, the investigation of optimized surface shapes is presented. The results show that in individuals with high summer reflective performance, most of solar radiation hits a surface element only once and reflects upward in summer. In the investigation, the elevation angles of surface elements were approximately 70° and 60° for the installations in the south and west, respectively. It is predicted that the normal of the surface element where solar radiation reaches first is one of the determinants of the summer reflective performance. In addition, the effect of installation city or direction on the optimal design is analyzed. The results show that the direction does not significantly affect, the city suggests to affect the optimal design.https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/33/e3sconf_iaqvec2023_05004.pdf |
| spellingShingle | Futaoka Kako Yoshida Shinji Optimal Design Method for Surface Shape of Exterior Material to Improve Thermal Environment in Streets E3S Web of Conferences |
| title | Optimal Design Method for Surface Shape of Exterior Material to Improve Thermal Environment in Streets |
| title_full | Optimal Design Method for Surface Shape of Exterior Material to Improve Thermal Environment in Streets |
| title_fullStr | Optimal Design Method for Surface Shape of Exterior Material to Improve Thermal Environment in Streets |
| title_full_unstemmed | Optimal Design Method for Surface Shape of Exterior Material to Improve Thermal Environment in Streets |
| title_short | Optimal Design Method for Surface Shape of Exterior Material to Improve Thermal Environment in Streets |
| title_sort | optimal design method for surface shape of exterior material to improve thermal environment in streets |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/33/e3sconf_iaqvec2023_05004.pdf |
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