Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 정재원 | - |
dc.date.accessioned | 2022-09-28T07:59:29Z | - |
dc.date.available | 2022-09-28T07:59:29Z | - |
dc.date.issued | 2020-12 | - |
dc.identifier.citation | BUILDING AND ENVIRONMENT, v. 186, article no. 107350, page. 1-11 | en_US |
dc.identifier.issn | 0360-1323; 1873-684X | en_US |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S0360132320307198?via%3Dihub | en_US |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/175016 | - |
dc.description.abstract | Microorganism contamination in air conditioning systems can cause respiratory diseases in building occupants. This study aims to evaluate and predict the performance of an in-duct ultraviolet germicidal irradiation (IDUVGI) system to reduce the microorganisms that can grow in the liquid desiccant and indirect/direct evaporative cooling-assisted 100% outdoor air system (LD-IDECOAS). Bacteria and mold on the direct evaporative cooling (DEC) element and in the outdoor and supply air were monitored using a swab and Petrifilm for surfaces and impact sampler for air during the operation of the LD-IDECOAS. Microbial contamination was first verified in the air before performing the sterilization experiment. The experimental results showed that the airborne bacteria were reduced by 78.3% after the operation of the ID-UVGI system but there was almost no reduction in the airborne mold. The bacteria and mold concentration on the DEC surface were decreased by 99.7% and 96.7% respectively 3 h after the ID-UVGI operation. Even after the ID-UVGI system was operated for 6 days, the microbial contamination in the downstream water was not decreased significantly; the inside of the DEC element was suspected to be improperly sterilized. The operating times of the ID-UVGI system needed to inactivate the microorganisms were predicted from the UV-C intensity distribution by irradiation analysis. Legionella sp. and Penicillium sp. were predicted to be inactivated by 99.9% with UV-C exposures of 6 s and 15 min 57 s or less respectively when the LD-IDECOAS is operated at the highest air flow rate. | en_US |
dc.description.sponsorship | This work was supported by the Basic Science Research Program of the National Research Foundation of Korea (NRF) and funded by the Korea government [grant number NRF-2017R1D1A1B03033016]. | en_US |
dc.language.iso | en | en_US |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | en_US |
dc.subject | Liquid desiccant and indirect/direct evaporative cooling-assisted 100% Outdoor air system (LD-IDECOAS); In-duct ultraviolet germicidal irradiation (ID-UVGI); Irradiation analysis; Microbial contamination; Indoor air quality | en_US |
dc.title | Sterilization effectiveness of in-duct ultraviolet germicidal irradiation system in liquid desiccant and indirect/direct evaporative cooling-assisted 100% outdoor air system | en_US |
dc.type | Article | en_US |
dc.relation.volume | 186 | - |
dc.identifier.doi | 10.1016/j.buildenv.2020.107350 | en_US |
dc.relation.page | 1-11 | - |
dc.relation.journal | BUILDING AND ENVIRONMENT | - |
dc.contributor.googleauthor | Bang, Jong-Il | - |
dc.contributor.googleauthor | Park, Joon-Young | - |
dc.contributor.googleauthor | Jo, Ye-Lim | - |
dc.contributor.googleauthor | Jeong, Jae-Weon | - |
dc.contributor.googleauthor | Choi, Anseop | - |
dc.contributor.googleauthor | Sung, Minki | - |
dc.relation.code | 2020051850 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | SCHOOL OF ARCHITECTURAL ENGINEERING | - |
dc.identifier.pid | jjwarc | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.