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Optimized mechanism for fast removal of infectious pathogen-laden aerosols in the negative-pressure unit

Authors
 Jooyeon Park  ;  Kwang Suk Lee  ;  Hyungmin Park 
Citation
 JOURNAL OF HAZARDOUS MATERIALS, Vol.435 : 128978, 2022-08 
Journal Title
JOURNAL OF HAZARDOUS MATERIALS
ISSN
 0304-3894 
Issue Date
2022-08
MeSH
Aerosols ; Air Filters* ; COVID-19* ; Humans ; SARS-CoV-2 ; Ventilation
Keywords
Air change rate ; COVID-19 ; Computational fluid dynamics ; Negative pressure ; Pathogen ; SARS-CoV-2 ; Ventilation ; Virus transmission
Abstract
It has been frequently emphasized that highly contagious respiratory disease pathogens (such as SARS-CoV-2) are transmitted to the other hosts in the form of micro-sized aerosols (< 5 μm) in the air without physical contacts. Hospital environments such as negative-pressure unit are considered being consistently exposed to pathogens, so it is essential to quickly discharge them through the effective ventilation system. To achieve that, in the present study, we propose the optimized ventilation mechanism and design for the fastest removal of pathogen-laden aerosol using numerical simulations. We quantitatively evaluated the aerosol removal performance of various ventilation configurations (combinations of air exhaust and supply ducts), and found that the key mechanism is to form the coherent (preferentially upward) airflow structure to surround the respiratory flow containing the aerosol cluster. We believe that the present findings will play a critical role in developing the high-efficiency negative-pressure facility irrespective of its size and environments.
Files in This Item:
T202201960.pdf Download
DOI
10.1016/j.jhazmat.2022.128978
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Urology (비뇨의학교실) > 1. Journal Papers
Yonsei Authors
Lee, Kwang Suk(이광석) ORCID logo https://orcid.org/0000-0002-7961-8393
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/189278
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