(주)에이피엠엔지니어링

밀폐공간에서 비말 가림막 높이에 따른 감염성 비말 공기전파 차단능력 평가

Effect of droplet protection screen height on the prevention ability of infectious droplet airborne transmission in closed space

Abstract

Although the installation of droplet protection screen (DPS) is known to prevent droplet transmission, there is still a lack of knowledge in effectiveness of DPS installation to block the airborne transmission. In this study, the prevention ability of DPS against airborne transmission was evaluated according to the DPS height. When the DPS was not installed, the maximum concentration of PM1.0 at the location opposite to infected person was 35% of that at the infected person location. When the DPS was installed, the DPS effectively prevented the airborne transmission, consequently approximately 7% of generated particles were measured at the opposite location from particle generation position (infected person location). The prevention ability of DPS increased with DPS height, the maximum prevention efficiency of 95.1% was obtained when the DPS height was 900mm. Moreover, the speed of airborne transmission was delayed by installation of DPS, and the delay time increased with DPS height.

Keywords

Airborne transmission, Droplet protection screen, Prevention ability, Infectious droplet, Closed space

▶출처 : 한국입자에어로졸학회 Vol. 17, No. 2, 2021.06