Spectral properties of retro-reflective materials from experimental measurements
Retro-reflective (RR) materials have received much attention due to their retro-reflective optical properties, which has essential differences with the diffuse reflection of traditional highly-reflective materials. As a guide to determine the performance improvement and the building applications of...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-11-01
|
| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X22006700 |
| _version_ | 1811204486363873280 |
|---|---|
| author | Shuhan Liu Jing Wang Xi Meng |
| author_facet | Shuhan Liu Jing Wang Xi Meng |
| author_sort | Shuhan Liu |
| collection | DOAJ |
| description | Retro-reflective (RR) materials have received much attention due to their retro-reflective optical properties, which has essential differences with the diffuse reflection of traditional highly-reflective materials. As a guide to determine the performance improvement and the building applications of RR materials, the spectral characteristics are measured and related to the typical glass-bead and prism RR materials. The integrating sphere is used to measure the global reflectivity of the two RR materials, while a new instrument is developed to study the angular distribution and the retro-reflectivity of two RR materials at different incident angles. The results show that the global reflectivity is found to be 68.08% and 51.44% for the glass-bead and Prism RR materials, respectively, but the retro-reflectivity of the prism RR material is 12.56% higher than that for the glass-bead RR materials. The RR materials display the greatest different for the retro-reflectivity under the different radiation wavelengths. The variation trend of the retro-reflectivity is distinct for different wavelength ranges: the higher the wavelength, the lower the retro-reflectivity. Increasing the incident angle could reduce the retro-reflective property of the RR materials, and the incident angle had a high impact on radiation wavelengths less than 1200 nm. With the incident angle increased from 0° to 80°, the retro-reflectivity is reduced by 40.58–48.60% for the 800 nm wavelength, 35.40–45.13% for the 900 nm, 23.43–26.01% for 1000–1200 nm, and 8.64–13.71% for 1300–1600 nm. |
| first_indexed | 2024-04-12T03:14:08Z |
| format | Article |
| id | doaj.art-44efdaf4f7de4fe0aca9e7a35e99bf28 |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-04-12T03:14:08Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-44efdaf4f7de4fe0aca9e7a35e99bf282022-12-22T03:50:13ZengElsevierCase Studies in Thermal Engineering2214-157X2022-11-0139102434Spectral properties of retro-reflective materials from experimental measurementsShuhan Liu0Jing Wang1Xi Meng2Innovation Institute for Sustainable Maritime Architecture Research and Technology, Qingdao University of Technology, Qingdao, 266033, ChinaInnovation Institute for Sustainable Maritime Architecture Research and Technology, Qingdao University of Technology, Qingdao, 266033, ChinaCorresponding author.; Innovation Institute for Sustainable Maritime Architecture Research and Technology, Qingdao University of Technology, Qingdao, 266033, ChinaRetro-reflective (RR) materials have received much attention due to their retro-reflective optical properties, which has essential differences with the diffuse reflection of traditional highly-reflective materials. As a guide to determine the performance improvement and the building applications of RR materials, the spectral characteristics are measured and related to the typical glass-bead and prism RR materials. The integrating sphere is used to measure the global reflectivity of the two RR materials, while a new instrument is developed to study the angular distribution and the retro-reflectivity of two RR materials at different incident angles. The results show that the global reflectivity is found to be 68.08% and 51.44% for the glass-bead and Prism RR materials, respectively, but the retro-reflectivity of the prism RR material is 12.56% higher than that for the glass-bead RR materials. The RR materials display the greatest different for the retro-reflectivity under the different radiation wavelengths. The variation trend of the retro-reflectivity is distinct for different wavelength ranges: the higher the wavelength, the lower the retro-reflectivity. Increasing the incident angle could reduce the retro-reflective property of the RR materials, and the incident angle had a high impact on radiation wavelengths less than 1200 nm. With the incident angle increased from 0° to 80°, the retro-reflectivity is reduced by 40.58–48.60% for the 800 nm wavelength, 35.40–45.13% for the 900 nm, 23.43–26.01% for 1000–1200 nm, and 8.64–13.71% for 1300–1600 nm.http://www.sciencedirect.com/science/article/pii/S2214157X22006700Retro-reflective materialRetro-reflectivitySolar thermal radiationRadiation wavelength |
| spellingShingle | Shuhan Liu Jing Wang Xi Meng Spectral properties of retro-reflective materials from experimental measurements Case Studies in Thermal Engineering Retro-reflective material Retro-reflectivity Solar thermal radiation Radiation wavelength |
| title | Spectral properties of retro-reflective materials from experimental measurements |
| title_full | Spectral properties of retro-reflective materials from experimental measurements |
| title_fullStr | Spectral properties of retro-reflective materials from experimental measurements |
| title_full_unstemmed | Spectral properties of retro-reflective materials from experimental measurements |
| title_short | Spectral properties of retro-reflective materials from experimental measurements |
| title_sort | spectral properties of retro reflective materials from experimental measurements |
| topic | Retro-reflective material Retro-reflectivity Solar thermal radiation Radiation wavelength |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X22006700 |
| work_keys_str_mv | AT shuhanliu spectralpropertiesofretroreflectivematerialsfromexperimentalmeasurements AT jingwang spectralpropertiesofretroreflectivematerialsfromexperimentalmeasurements AT ximeng spectralpropertiesofretroreflectivematerialsfromexperimentalmeasurements |