3D printed smart windows for adaptive solar modulations
Vanadium dioxide (VO2) based thermochromic smart window is considered as the most promising approach for economizing building energy consumption. However, the high phase transition temperature (τc), low luminous transmission (Tlum), and solar modulation (ΔTsol) impose an invertible challenge for com...
| Main Authors: | , , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/141502 |
| _version_ | 1811696894127112192 |
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| author | Zhou, Chengzhi Li, Dan Tan, Yutong Ke, Yujie Wang, Shancheng Zhou, Yang Liu, Guowei Wu, Shaofan Peng, Jinqing Li, Anran Li, Shuzhou Chan, Siew Hua Magdassi, Shlomo Long, Yi |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Zhou, Chengzhi Li, Dan Tan, Yutong Ke, Yujie Wang, Shancheng Zhou, Yang Liu, Guowei Wu, Shaofan Peng, Jinqing Li, Anran Li, Shuzhou Chan, Siew Hua Magdassi, Shlomo Long, Yi |
| author_sort | Zhou, Chengzhi |
| collection | NTU |
| description | Vanadium dioxide (VO2) based thermochromic smart window is considered as the most promising approach for economizing building energy consumption. However, the high phase transition temperature (τc), low luminous transmission (Tlum), and solar modulation (ΔTsol) impose an invertible challenge for commercialization. Currently, smart window research surprisingly assumes that the sunlight radiates in one direction which is obviously not valid as most regions receive solar radiation at various angles in different seasons. For the first time, solar elevation angle is considered and 3D printing technology is employed to fabricate tilted microstructures for modulating solar transmission dynamically. To maximize energy-saving performance, the architecture of the structures (tilt, thickness, spacing, and width) and tungsten (W) doped VO2 can be custom-designed according to the solar elevation angle variation at the midday between seasons and tackle the issue of compromised Tlum and ΔTsol with W-doping. The energy consumption simulations in different cities prove the efficiency of such dynamic modulation. This first attempt to adaptively regulate the solar modulation by considering the solar elevation angle together with one of the best reported thermochromic properties (τc = 40 °C, Tlum(average) = 40.8%, ΔTsol = 23.3%) may open a new era of real-world-scenario smart window research. |
| first_indexed | 2024-10-01T07:46:37Z |
| format | Journal Article |
| id | ntu-10356/141502 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:46:37Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1415022022-11-30T09:06:34Z 3D printed smart windows for adaptive solar modulations Zhou, Chengzhi Li, Dan Tan, Yutong Ke, Yujie Wang, Shancheng Zhou, Yang Liu, Guowei Wu, Shaofan Peng, Jinqing Li, Anran Li, Shuzhou Chan, Siew Hua Magdassi, Shlomo Long, Yi School of Materials Science and Engineering School of Mechanical and Aerospace Engineering Interdisciplinary Graduate School (IGS) Singapore-HUJ Alliance for Research and Enterprise Nanomaterials for Energy and Energy Water Nexus Campus for Research Excellence and Technological Enterprise Energy Research Institute @ NTU (ERI@N) Engineering::Materials 3D Printing Energy Conservation Vanadium dioxide (VO2) based thermochromic smart window is considered as the most promising approach for economizing building energy consumption. However, the high phase transition temperature (τc), low luminous transmission (Tlum), and solar modulation (ΔTsol) impose an invertible challenge for commercialization. Currently, smart window research surprisingly assumes that the sunlight radiates in one direction which is obviously not valid as most regions receive solar radiation at various angles in different seasons. For the first time, solar elevation angle is considered and 3D printing technology is employed to fabricate tilted microstructures for modulating solar transmission dynamically. To maximize energy-saving performance, the architecture of the structures (tilt, thickness, spacing, and width) and tungsten (W) doped VO2 can be custom-designed according to the solar elevation angle variation at the midday between seasons and tackle the issue of compromised Tlum and ΔTsol with W-doping. The energy consumption simulations in different cities prove the efficiency of such dynamic modulation. This first attempt to adaptively regulate the solar modulation by considering the solar elevation angle together with one of the best reported thermochromic properties (τc = 40 °C, Tlum(average) = 40.8%, ΔTsol = 23.3%) may open a new era of real-world-scenario smart window research. 2020-06-09T01:52:35Z 2020-06-09T01:52:35Z 2020 Journal Article Zhou, C., Li, D., Tan, Y., Ke, Y., Wang, S., Zhou, Y., . . . Long, Y. (2020). 3D printed smart windows for adaptive solar modulations. Advanced Optical Materials, 8(11), 2000013-. doi:10.1002/adom.202000013 2195-1071 https://hdl.handle.net/10356/141502 10.1002/adom.202000013 2-s2.0-85082324591 11 8 2000013 (1 of 10) 2000013 (10 of 10) en Advanced Optical Materials 10.21979/N9/Y3AVVV This is the peer reviewed version of the following article: Zhou, C., Li, D., Tan, Y., Ke, Y., Wang, S., Zhou, Y., . . . Long, Y. (2020). 3D printed smart windows for adaptive solar modulations. Advanced Optical Materials, xxx, 2000013-, which has been published in final form at http://doi.org/10.1002/adom.202000013. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. application/pdf |
| spellingShingle | Engineering::Materials 3D Printing Energy Conservation Zhou, Chengzhi Li, Dan Tan, Yutong Ke, Yujie Wang, Shancheng Zhou, Yang Liu, Guowei Wu, Shaofan Peng, Jinqing Li, Anran Li, Shuzhou Chan, Siew Hua Magdassi, Shlomo Long, Yi 3D printed smart windows for adaptive solar modulations |
| title | 3D printed smart windows for adaptive solar modulations |
| title_full | 3D printed smart windows for adaptive solar modulations |
| title_fullStr | 3D printed smart windows for adaptive solar modulations |
| title_full_unstemmed | 3D printed smart windows for adaptive solar modulations |
| title_short | 3D printed smart windows for adaptive solar modulations |
| title_sort | 3d printed smart windows for adaptive solar modulations |
| topic | Engineering::Materials 3D Printing Energy Conservation |
| url | https://hdl.handle.net/10356/141502 |
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