| Title |
Negative pressure formation and particle leakage control performance of pressure difference control system |
| Authors |
조희운(Cho, Heeun) ; 김기훈(Kim, Gihoon) ; 조성민(Jo, Seong-Min) ; 성민기(Sung, Minki) |
| DOI |
https://doi.org/10.5659/JAIK.2025.41.2.273 |
| Keywords |
Pressure difference control system; Airtightness performance; COVID-19; Pressure difference; Door opening and closing |
| Abstract |
This study developed and tested a pressure difference control system designed to prevent airborne infection spread during the COVID-19
pandemic. The system maintains negative pressure in an infected individual's space compared to adjacent areas, minimizing contamination. It
consists of a pressure difference sensor, control module, HEPA filter, fan, and door sensor. The fan's airflow increases when doors are
opened to limit contaminant leakage. Experiments were conducted in an office setting, using IoT sensors to measure the indoor environment
and pressure differences. The impact of factors such as the stack effect and airtightness on pressure formation was analyzed. Particle diffusion
experiments evaluated the system's performance, specifically the amount of leakage during door operation. Results demonstrated that the
system consistently maintained the target pressure difference, unaffected by the stack effect, and effectively reduced airborne contamination.
These findings confirm the system's potential for broader application in various environments to enhance infection control and air quality. |