| Issue |
E3S Web of Conf.
Volume 396, 2023
The 11th International Conference on Indoor Air Quality, Ventilation & Energy Conservation in Buildings (IAQVEC2023)
|
|
|---|---|---|
| Article Number | 04019 | |
| Number of page(s) | 8 | |
| Section | Nearly Zero Energy Buildings and Smart Energy community (Micro to Macro-scale) | |
| DOI | https://doi.org/10.1051/e3sconf/202339604019 | |
| Published online | 16 June 2023 | |
Characterization and energy performance of flexible photochromic window films
Department of Architectural Science, Toronto Metropolitan University, Toronto, Canada
* Corresponding author: kkhaled@ryerson.ca
Windows are considered the weakest components in the building envelope, driven by their low thermal resistance and static transmittance to solar gains. Consequently, innovative coatings are often proposed to promote energy saving performance of windows. This article investigates several flexible photochromic window films capable of reversibly modulating solar gains based on the abundance of ultraviolet radiation. The peel-and-stick films are applied to the internal glazing surface, making them suitable for window retrofits without interrupting building occupancy. The optical properties of the photochromic films are experimentally characterized at various solar radiation intensities. The results are then used to numerically evaluate the energy-saving potential of the different films for a representative room in a high-rise office building located in Tokyo’s warm climate. The results of the experimental and numerical investigations are discussed to show the potential of photochromic films for window-retrofit applications.
© The Authors, published by EDP Sciences, 2023
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