Effect of a System Air Conditioner on Local Air Quality in a Four-bed Ward
Abstract In a ward where many patients are hospitalized, effective ventilation is important because airborne viruses may cause secondary infection. This study investigates the changes in the air quality in a four-bed ward according to the use of a ventilation system (VS), an air cleaner (AC), a syst...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Springer
2020-12-01
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| Series: | Aerosol and Air Quality Research |
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| Online Access: | https://doi.org/10.4209/aaqr.200533 |
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| author | Jungsuk Lee Jung-Hun Noh Kwang-Chul Noh Young-Won Kim Se-Jin Yook |
| author_facet | Jungsuk Lee Jung-Hun Noh Kwang-Chul Noh Young-Won Kim Se-Jin Yook |
| author_sort | Jungsuk Lee |
| collection | DOAJ |
| description | Abstract In a ward where many patients are hospitalized, effective ventilation is important because airborne viruses may cause secondary infection. This study investigates the changes in the air quality in a four-bed ward according to the use of a ventilation system (VS), an air cleaner (AC), a system air conditioner (SAC), and personal curtains. The age of air was obtained both experimentally and numerically, and used as an indicator for the ventilation efficiency assessment. Consequently, the air flows from the outlets of the four-way cassette SAC could interfere with or contribute to the introduction of fresh air depending on the positions in the ward. For positions where the fresh air could not reach easily when only the VS was used, the air quality was improved by the additional use of the SAC. While the use of personal curtains prepared for each bed interfered with the air flow in the ward and resulted in local spots with poor air quality, the operation of both the VS and the SAC enhanced the air flow and improved the local air quality. The overall indoor air quality was improved when the AC was used. However, the ventilation efficiency was reduced when the SAC was operated along with the AC, and the air quality deteriorated at positions where the flow caused by the SAC and that by the AC interfered with each other. |
| format | Article |
| id | doaj-art-a6b2e7541c7345b5ac4d4789ef6479cf |
| institution | Kabale University |
| issn | 1680-8584 2071-1409 |
| language | English |
| publishDate | 2020-12-01 |
| publisher | Springer |
| record_format | Article |
| series | Aerosol and Air Quality Research |
| spelling | doaj-art-a6b2e7541c7345b5ac4d4789ef6479cf2025-02-09T12:21:04ZengSpringerAerosol and Air Quality Research1680-85842071-14092020-12-0121511510.4209/aaqr.200533Effect of a System Air Conditioner on Local Air Quality in a Four-bed WardJungsuk Lee0Jung-Hun Noh1Kwang-Chul Noh2Young-Won Kim3Se-Jin Yook4School of Mechanical Engineering, Hanyang UniversitySchool of Mechanical Engineering, Hanyang UniversityAir LabInternational Research Center for Geothermal Energy, Korea Institute of Industrial TechnologySchool of Mechanical Engineering, Hanyang UniversityAbstract In a ward where many patients are hospitalized, effective ventilation is important because airborne viruses may cause secondary infection. This study investigates the changes in the air quality in a four-bed ward according to the use of a ventilation system (VS), an air cleaner (AC), a system air conditioner (SAC), and personal curtains. The age of air was obtained both experimentally and numerically, and used as an indicator for the ventilation efficiency assessment. Consequently, the air flows from the outlets of the four-way cassette SAC could interfere with or contribute to the introduction of fresh air depending on the positions in the ward. For positions where the fresh air could not reach easily when only the VS was used, the air quality was improved by the additional use of the SAC. While the use of personal curtains prepared for each bed interfered with the air flow in the ward and resulted in local spots with poor air quality, the operation of both the VS and the SAC enhanced the air flow and improved the local air quality. The overall indoor air quality was improved when the AC was used. However, the ventilation efficiency was reduced when the SAC was operated along with the AC, and the air quality deteriorated at positions where the flow caused by the SAC and that by the AC interfered with each other.https://doi.org/10.4209/aaqr.200533Indoor air qualityAge of airSystem air conditionerVentilation systemAir cleaner |
| spellingShingle | Jungsuk Lee Jung-Hun Noh Kwang-Chul Noh Young-Won Kim Se-Jin Yook Effect of a System Air Conditioner on Local Air Quality in a Four-bed Ward Aerosol and Air Quality Research Indoor air quality Age of air System air conditioner Ventilation system Air cleaner |
| title | Effect of a System Air Conditioner on Local Air Quality in a Four-bed Ward |
| title_full | Effect of a System Air Conditioner on Local Air Quality in a Four-bed Ward |
| title_fullStr | Effect of a System Air Conditioner on Local Air Quality in a Four-bed Ward |
| title_full_unstemmed | Effect of a System Air Conditioner on Local Air Quality in a Four-bed Ward |
| title_short | Effect of a System Air Conditioner on Local Air Quality in a Four-bed Ward |
| title_sort | effect of a system air conditioner on local air quality in a four bed ward |
| topic | Indoor air quality Age of air System air conditioner Ventilation system Air cleaner |
| url | https://doi.org/10.4209/aaqr.200533 |
| work_keys_str_mv | AT jungsuklee effectofasystemairconditioneronlocalairqualityinafourbedward AT junghunnoh effectofasystemairconditioneronlocalairqualityinafourbedward AT kwangchulnoh effectofasystemairconditioneronlocalairqualityinafourbedward AT youngwonkim effectofasystemairconditioneronlocalairqualityinafourbedward AT sejinyook effectofasystemairconditioneronlocalairqualityinafourbedward |