| Title |
Performance Evaluation of a Mobile Negative Pressure Isolation Room Ventilation System |
| DOI |
https://doi.org/10.5659/JAIK.2025.41.8.343 |
| Keywords |
Mobile Negative Pressure Isolation Room; Ventilation Performance; Contaminant Removal Effectiveness; Displacement Airflow |
| Abstract |
This study evaluates the ventilation performance of a mobile negative pressure isolation room using tracer gas experiments. The goal was to
assess its ability to maintain pressure differences, direct airflow from clean to contaminated zones, and remove pollutants efficiently. A
calculated CRE value of 1.667 confirmed that contaminant concentrations at the exhaust grilles were approximately 1.67 times higher than in
the occupant zone, indicating effective extraction of pollutants from the patient area. Although measured airflow rates varied slightly from
design specifications, the system achieved at least 12 ACH, providing adequate dilution and exhaust of airborne contaminants. Sensors located
near the exhaust grilles, SP1 and SP2, recorded higher concentrations at 124.38 ppm and 114.11 ppm, respectively. In contrast, sensors
positioned farther away, SP3, SP4, and SP5, showed progressively lower levels, measuring 91.11 ppm, 84.29 ppm, and 39.13 ppm. These
results confirm the establishment of effective displacement airflow. Meanwhile, the anteroom sensor SP6 registered 0 ppm, indicating that the
room’s negative pressure successfully prevented the spread of contaminants to adjacent spaces. These results demonstrate the system’s
effectiveness in controlling airborne pollutants, making it a viable option for rapid deployment in pandemic and other emergency healthcare
settings. Further studies are recommended to refine airflow distribution and optimize performance through advanced numerical simulations and
extended field testing under varied conditions. |