수도권 전동차 객실 CO₂농도관측을 통한 자연환기효과 해석 = Analysis of Natural Ventilation Effect of Seoul Metropolitan Subway by Monitoring Indoor CO₂ Concentrations

다국어 초록 (Multilingual Abstract)

Two major parameters, i.e. carbon dioxide (CO₂) and particulate matters smaller than 10μm (PM10), were selected as the index pollutants in managing indoor air quality. The former pollutant, CO₂, is the index that shows the ventilation status and is exhaled by passengers when they breathe in train or subway. It is generally known that high CO₂ concentration in the vehicle may be decreased by insufficient air-tightening vehicle bodies and the air is ventilated when vehicles stop at the station and doors open. However, there is no established proof or quantitatively identified data on how much the CO₂ concentration is reduced when ventilation is done while doors are opened. In this study, CO₂ concentrations were measured in 6 lines of Korail and one line of Seoul Metro subway linesand a theoretical approach was takento predict the changing trend of CO₂ concentrations during the operation of vehicle by using CO₂ dilution factor through natural ventilation. As a result, the change could be quantified and it was found that app. 35% of indoor CO₂ was removed through natural ventilation.

목차 (Table of Contents)

• ABSTRACT
• 1. 서론
• 2. 연구방법
• 3. 객실 CO₂농도 예측식개발 및 검증
• 4. 결론
• 5. 참고문헌