| Title |
Development and Performance Evaluation of Low-Noise Integrated and Separated Type Portable HEPA Filter Units for Temporary Negative Pressure Isolation Rooms |
| Authors |
Joo Yeon Roh ; Se Jin Lee ; Won Seok Lee ; Tae Young Park ; Dong Il Park ; Myoung Souk Yeo |
| DOI |
https://doi.org/10.6110/KJACR.2025.37.3.151 |
| Keywords |
오염물질 재유입 방지; 소음수준; 이동형 음압기; 챔버 실험; 임시음압격리병실 Contaminant re-entry prevention; Noise level; Portable HEPA filter unit; Simulated chamber test; Temporary negative pressure isolation room |
| Abstract |
This study aimed to address noise issues and concerns regarding contaminant re-entry in temporary negative pressure isolation rooms equipped with portable negative pressure units. To achieve this, we developed low-noise integrated portable HEPA filter unit and separated unit, in which fan and filter components were divided. We then evaluated their performance in both a healthcare facility and a simulated chamber, comparing with the existing integrated unit currently used in healthcare facilities. Results showed that the low-noise integrated unit significantly reduced noise levels compared to the existing integrated unit. The separated unit exhibited similar noise levels to the low-noise integrated unit at lower airflow rates but exhibited lower noise levels compared to the integrated unit as airflow increased. The separated unit also effectively prevented contaminant re-entry, with lower tracer gas concentrations observed in the patient room and hallway compared to the integrated unit during the chamber experiment. |