Indoor Air Quality Diagnosis Program for School Multi-Purpose Activity and Office Spaces
This study presents a simple indoor air quality diagnosis program for school office spaces, which are occupied for long durations by teachers, and indoor sports facilities, whose utilization has been on the rise in response to high concentrations of pollutants in outdoor air. The proposed program wa...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/15/21/8134 |
| _version_ | 1797468358207078400 |
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| author | Yeo-Kyung Lee Young Il Kim Ga-Hyeon Kim |
| author_facet | Yeo-Kyung Lee Young Il Kim Ga-Hyeon Kim |
| author_sort | Yeo-Kyung Lee |
| collection | DOAJ |
| description | This study presents a simple indoor air quality diagnosis program for school office spaces, which are occupied for long durations by teachers, and indoor sports facilities, whose utilization has been on the rise in response to high concentrations of pollutants in outdoor air. The proposed program was made with Visual Basic for Applications (VBA) and Microsoft Excel. This program requires inputs which can be easily determined or measured even by nonexperts and can check the current status of indoor air quality such as CO<sub>2</sub> and PM<sub>2.5</sub> concentrations and predict the effect if changes are made. In addition, it is possible to diagnose indoor air quality before and after class and compare it with the initial plan so that if it exceeds the indoor air quality maintenance standard range, it can be improved by using a ventilation system and an air purifier. The development of the program was divided into four stages. First, prior research on the influencing factors was investigated. Second, influencing factors affecting the changes in PM<sub>2.5</sub> and CO<sub>2</sub> concentrations were selected by category to accommodate the various factors, and those selected as input were presented. Third, mass and concentration conservation equations were utilized to derive PM<sub>2.5</sub> and CO<sub>2</sub> concentration prediction equations according to activity and passage of time, and a VBA code was used for constructing the program. For verification of the developed program, the calculation results were compared with the measured data. The mean absolute percentage error (MAPE) was 19.47% for PM<sub>2.5</sub> concentration. In order to improve accuracy, Simulation 2, in which the wind speed and indoor/outdoor air pressure difference are corrected, is presented. The MAPE of PM<sub>2.5</sub> concentration by the corrected Simulation 2 was lowered 5.15%. |
| first_indexed | 2024-03-09T19:06:19Z |
| format | Article |
| id | doaj.art-51ba838b71774ff786bd372f4ec5a4be |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T19:06:19Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-51ba838b71774ff786bd372f4ec5a4be2023-11-24T04:32:23ZengMDPI AGEnergies1996-10732022-10-011521813410.3390/en15218134Indoor Air Quality Diagnosis Program for School Multi-Purpose Activity and Office SpacesYeo-Kyung Lee0Young Il Kim1Ga-Hyeon Kim2Department of Architectural Engineering, Graduate School, Seoul National University of Science and Technology, Seoul 01811, KoreaSchool of Architecture, Seoul National University of Science and Technology, Seoul 01811, KoreaArchitectural Engineering Program, School of Architecture, Seoul National University of Science and Technology, Seoul 01811, KoreaThis study presents a simple indoor air quality diagnosis program for school office spaces, which are occupied for long durations by teachers, and indoor sports facilities, whose utilization has been on the rise in response to high concentrations of pollutants in outdoor air. The proposed program was made with Visual Basic for Applications (VBA) and Microsoft Excel. This program requires inputs which can be easily determined or measured even by nonexperts and can check the current status of indoor air quality such as CO<sub>2</sub> and PM<sub>2.5</sub> concentrations and predict the effect if changes are made. In addition, it is possible to diagnose indoor air quality before and after class and compare it with the initial plan so that if it exceeds the indoor air quality maintenance standard range, it can be improved by using a ventilation system and an air purifier. The development of the program was divided into four stages. First, prior research on the influencing factors was investigated. Second, influencing factors affecting the changes in PM<sub>2.5</sub> and CO<sub>2</sub> concentrations were selected by category to accommodate the various factors, and those selected as input were presented. Third, mass and concentration conservation equations were utilized to derive PM<sub>2.5</sub> and CO<sub>2</sub> concentration prediction equations according to activity and passage of time, and a VBA code was used for constructing the program. For verification of the developed program, the calculation results were compared with the measured data. The mean absolute percentage error (MAPE) was 19.47% for PM<sub>2.5</sub> concentration. In order to improve accuracy, Simulation 2, in which the wind speed and indoor/outdoor air pressure difference are corrected, is presented. The MAPE of PM<sub>2.5</sub> concentration by the corrected Simulation 2 was lowered 5.15%.https://www.mdpi.com/1996-1073/15/21/8134carbon dioxidePM<sub>2.5</sub>indoor air qualitydiagnosis programmultipurpose activityoffice |
| spellingShingle | Yeo-Kyung Lee Young Il Kim Ga-Hyeon Kim Indoor Air Quality Diagnosis Program for School Multi-Purpose Activity and Office Spaces Energies carbon dioxide PM<sub>2.5</sub> indoor air quality diagnosis program multipurpose activity office |
| title | Indoor Air Quality Diagnosis Program for School Multi-Purpose Activity and Office Spaces |
| title_full | Indoor Air Quality Diagnosis Program for School Multi-Purpose Activity and Office Spaces |
| title_fullStr | Indoor Air Quality Diagnosis Program for School Multi-Purpose Activity and Office Spaces |
| title_full_unstemmed | Indoor Air Quality Diagnosis Program for School Multi-Purpose Activity and Office Spaces |
| title_short | Indoor Air Quality Diagnosis Program for School Multi-Purpose Activity and Office Spaces |
| title_sort | indoor air quality diagnosis program for school multi purpose activity and office spaces |
| topic | carbon dioxide PM<sub>2.5</sub> indoor air quality diagnosis program multipurpose activity office |
| url | https://www.mdpi.com/1996-1073/15/21/8134 |
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