Sterilization effectiveness of in-duct ultraviolet germicidal irradiation system in liquid desiccant and indirect/direct evaporative cooling-assisted 100% outdoor air system
DC Field | Value | Language |
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dc.contributor.author | Bang, Jong-Il | - |
dc.contributor.author | Park, Joon-Young | - |
dc.contributor.author | Jo, Ye-Lim | - |
dc.contributor.author | Jeong, Jae-Weon | - |
dc.contributor.author | Choi, Anseop | - |
dc.contributor.author | Sung, Minki | - |
dc.date.accessioned | 2022-07-07T09:27:23Z | - |
dc.date.available | 2022-07-07T09:27:23Z | - |
dc.date.created | 2021-05-12 | - |
dc.date.issued | 2020-12 | - |
dc.identifier.issn | 0360-1323 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/144228 | - |
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. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Sterilization effectiveness of in-duct ultraviolet germicidal irradiation system in liquid desiccant and indirect/direct evaporative cooling-assisted 100% outdoor air system | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Jeong, Jae-Weon | - |
dc.identifier.doi | 10.1016/j.buildenv.2020.107350 | - |
dc.identifier.scopusid | 2-s2.0-85091896065 | - |
dc.identifier.wosid | 000600276900005 | - |
dc.identifier.bibliographicCitation | BUILDING AND ENVIRONMENT, v.186, pp.1 - 11 | - |
dc.relation.isPartOf | BUILDING AND ENVIRONMENT | - |
dc.citation.title | BUILDING AND ENVIRONMENT | - |
dc.citation.volume | 186 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 11 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Construction & Building Technology | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Construction & Building Technology | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Engineering, Civil | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | CONTAMINATION | - |
dc.subject.keywordPlus | BACTERIA | - |
dc.subject.keywordPlus | DISINFECTION | - |
dc.subject.keywordAuthor | Liquid desiccant and indirect/direct evaporative cooling-assisted 100% Outdoor air system (LD-IDECOAS) | - |
dc.subject.keywordAuthor | In-duct ultraviolet germicidal irradiation (ID-UVGI) | - |
dc.subject.keywordAuthor | Irradiation analysis | - |
dc.subject.keywordAuthor | Microbial contamination | - |
dc.subject.keywordAuthor | Indoor air quality | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0360132320307198?via%3Dihub | - |
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