| Title |
Evaluation of Visual Comfort and Lighting Energy in a Residential Building Equipped with Suspended Particle Device Smart Window Based on In-situ Measurement |
| Authors |
이수진(Lee, Soo-Jin) ; 송승영(Song, Seung-Yeong) |
| DOI |
https://doi.org/10.5659/JAIK.2023.39.5.147 |
| Keywords |
Suspended particle device smart window; Residential building; Visual comfort; Lighting energy; In-situ measurement |
| Abstract |
The purpose of this study is to evaluate the performance of visual comfort and lighting energy according to the application of smart
windows based on in-situ measurement. To this end, suspended particle device smart windows were applied to an apartment building, which
is representative residential building in Korea, related sensors and equipment were installed, and data was collected over '22.07~09. In
addition, the evaluation items for visual comfort were set with glare and indoor daylight illuminance, and each evaluation indicator adopted
DGI (Daylight Glare Index) and UDI (Useful Daylight Illuminance). Energy performance evaluation was analyzed through lighting energy
consumption. In the case of cloudy day, glare did not occur in the control group, so it was found that glare control by smart window
discoloration was unnecessary. In the case of partly cloudy day and the clear day, regardless of the smart window control method, the DGI
value was always below 22 when applying the smart window, which was found to be effective for glare control. In terms of promoting UDI
and reducing lighting energy consumption, it was found to be effective in controlling smart window discoloration rather than always
discoloring smart windows under all sky condition. And it was found that the difference in effect was not large when the discoloration
reference value was 200 lx or 400 lx. |