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전동차 출입문 개폐에 따른 객실 이산화탄소 농도변화의 실험적 연구
권순박(Kwon Soon-Bark),박덕신(Park Duckshin),조영민(Cho Youngmin),박은영(Park Eun-Young),김세영(Kim Se-Young),정미영(Jung Mi-Young),함대주(Ham Dae-Joo) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
Indoor air quality (IAQ) of subway becomes a key issue as the IAQ guidelines for public transportation published. There are two major sources regarding IAQ of subway; One is the sources coming from outdoor air and the other is sources of inside. Particulate matters smaller than 10 micrometer (PM10) and carbon dioxide (CO₂) are recognized as the one of the most severe pollutants in Korea. The source of PM10 is mainly coming from outdoor air, however, the source of CO₂ is coming from passengers exhaust. According to the guidelines, the level of CO₂ should be lower than 2500ppm for normal operating time and lower than 3500ppm for rush hour. In order to satisfy these guidelines, the volume of mechanical ventilation should be increase which consumes extra energy for heating or cooling. Therefore, the optimum volume of mechanical ventilation should be calculated for energy saving. In this study, we measured the natural ventilation rate by door-opening which can reduce the load of mechanical ventilation. The CO₂ generator and sensors were used to measure the change of CO₂ by periodic door-opening of subway.